02/12/2014, 09:00
Jonathan R. Ellis
(CERN)
02/12/2014, 09:15
Higgs Physics at LHC and Beyond
The discovery of a Higgs boson at the LHC raises (almost) as many questions as it answers. Is it an elementary particle, or composite? Are there other Higgs bosons? Is the vacuum stable? Are there other particles at the TeV scale waiting to be discovered at the LHC or in dark matter experiments? This talk will answer none of these questions.
Jim Virdee
(Imperial College Sci., Tech. & Med. (GB))
02/12/2014, 10:00
Experimental results from and prospects at LHC and new facilities.
I will concentrate on hadron colliders, although I will also discuss (briefly) neutrino physics, e+e- colliders etc
Prof.
S Sarkar
(University of Oxford (GB))
02/12/2014, 11:15
I will review recent observational results in particle astrophysics/cosmology, focussing on new data from Planck and from AMS-02 & IceCube, and discuss how the universe can be used as a laboratory for probing fundamental physics.
Prof.
Carl Bender
(Washington University in St Louis)
02/12/2014, 12:00
The average quantum physicist on the street would say that a quantum-mechanical Hamiltonian must be Dirac Hermitian (invariant under combined matrix transposition and complex conjugation) in order to guarantee that the energy eigenvalues are real and that time evolution is unitary. However, the Hamiltonian $H=p^2+ix^3$, which is obviously not Dirac Hermitian, has a positive real discrete...
Adrian Bevan
(University of London (GB))
02/12/2014, 12:45
The prospects for tests of C, P, and CP using triple product asymmetries in quark, charged lepton, and boson decay are discussed, and possibilities of testing CP, T and CPT with entangled pairs of neutral mesons will be reviewed.
Dr
CRISTINA VOLPE
(ASTROPARTICULE ET COSMOLOGIE (APC))
02/12/2014, 14:45
Neutrinos of astrophysical origin are messengers produced in stars, in explosive phenomena like core-collapse supernovae, in the accretion disks around black holes, or in the Earth's atmosphere. Their fluxes and spectra encode information on the environments that produce them. Such fluxes are modified in characteristic ways when neutrinos traverse a medium, also depending on key unknown...
Dr
Giovanni F. Tassielli
(INFN Lecce / Università del Salento)
02/12/2014, 14:45
Accidental symmetries (B, L conservation)
Contribution (25 + 5 min)
The Mu2e Experiment at Fermilab will search for coherent, neutrino-less
conversion of muons into electrons in the field of a nucleus with a
sensitivity improvement of a factor of 10,000 over existing limits. Such a
lepton flavor-violating reaction probes new physics at a scale
inaccessible with direct searches at either present or planned high energy
colliders. The experiment both...
Shintaro Ito
(Osaka University, Toyonaka, Osaka, 560-0043, Japan)
02/12/2014, 15:15
Study of rare decays is an important approach to search for new physics beyond the Standard Model. The branching ratio of charged pion decays, `$R={\Gamma}({\pi}^+{\rightarrow}e^{+}{\nu}_{e}({\gamma}))$/${\Gamma}({\pi}^+{\rightarrow}{\mu}^+{\nu}_{\mu}({\gamma}))$` is one of the most precisely calculated processes involving quarks with `$R_{SM}=(1.2352{\pm}0.0001)$` `${\times}10^{-4}$`. Precise...
francisco j. botella
(University of Valencia)
02/12/2014, 15:15
Quantum Entanglement between the two neutral mesons produced in meson factories has allowed the first direct observation of Time-Reversal-Violation in the time evolution of the B neutral meson system between the two decays. The exceptional meson transitions are directly connected to semileptonic and CP-eigenstate decay channels. The possibility of extending the observable asymmetries to more...
Massimo Blasone
(Università di Salerno)
02/12/2014, 15:20
We present a dynamical mechanism à la Nambu-Jona-Lasinio for the generation of masses and mixing for two interacting fermion fields. The analysis is carried out in a framework in which mass generation is achieved via inequivalent representations, and that we generalize to the case of two generations. The method allows a clear identification of the vacuum structure for each physical phase,...
Aleksander Gajos
(Jagiellonian University)
02/12/2014, 15:50
This work presents prospects for conducting a novel direct test of time- reversal symmetry at the KLOE-2 experiment. Quantum entanglement of neutral K meson pairs uniquely available at KLOE-2 allows to probe the T symmetry directly and independently of CP violation. This is achieved by a comparison of probabilities for a transition and its inverse obtained through exchange of initial and final...
Dr
Juan Carlos D'Olivo
(Depto. de Física Teórica, Universidad de Valencia)
02/12/2014, 15:55
We consider the evolution operator of a quantum system described
by a time-dependent Hamiltonian that is invariant under time reversal.
As an illustration we examine the three-neutrino oscillations in a medium
with a density profile which is symmetrical about the midpoint of the of the
neutrino trajectory. The evolution operator is written as the product of factors
corresponding to...
Gerald Eigen
(University of Bergen (NO))
02/12/2014, 17:00
We present a selection of recent results obtained by using the data collected with the BaBar detector at the PEP-II e+e- B-factory, with particular emphasis on measurements probing the discrete symmetries in beauty and charm decays. These include the measurements of partial decay rates and CP asymmetries of the inclusive decays B -> Xs l+ l- and B -> Xs gamma; searches for lepton number...
Prof.
Vladimir Konotop
(Universidade de Lisboa)
02/12/2014, 17:00
Spin-orbit coupled Bose-Einstein condensates (SO-BECs), which in the meanfield approximation are governed by two linearly coupled Gross-Pitaevskii equations, allow for the existence of many types of localized nonlinear excitations: fundamental and multipole solitons, soliton half-vortices, etc. In the first part of the talk, such excitations will be considered in the presence of so-called...
Mark Lancaster
(University College London (UK))
02/12/2014, 17:00
The Fermilab Muon g-2 experiment, E989, is presently being constructed and is seeking to measure the anomalous magnetic moment of the muon to a precision of 0.14ppm: a factor of four better than the previous Brookhaven measurement which has a long-standing discrepancy with respect to the SM prediction of approximately 3.5 standard deviations. I will review the status of the Fermilab experiment...
Gerald Eigen
(University of Bergen (NO))
02/12/2014, 17:30
We report on the latest searches for low mass states predicted in several
New Physics models performed with the data collected by the BABAR detector.
These include:
searches for the so-called dark photons in e+e- annihilations (e+e- -> gamma A’, A’ -> e+e-, mu+mu-), and for long-lived particles motivated by recent astrophysical observations;
searches for non-standard pi0-like particle...
Sergio Palomares-Ruiz
(IFIC-Valencia)
02/12/2014, 17:30
The IceCube experiment has recently released 3 years of data of the first ever detected high-energy ($> 30$ TeV) neutrinos, which are consistent with an extraterrestrial origin. In this talk, I will discuss the compatibility of the observed track-to-shower ratio with possible combinations of neutrino flavors and its implications.
Claudia Hagedorn
(Excellence Cluster 'Universe', TU Munich)
02/12/2014, 17:30
I discuss a scenario for leptons with a flavor and a CP symmetry. If these symmetries are broken in a particular way, lepton mixing angles as well as the Dirac and the Majorana phases can be predicted in terms of quantities determined by the
symmetries of the theory and only one continuous parameter. I present results for a large class of flavor and CP symmetries. Furthermore, I study...
Prof.
Vincenzo Branchina
(University of Catania)
02/12/2014, 17:35
The renormalization group properties of a PT-symmetric $\phi^3$
theory are discussed and compared to the corresponding properties
of the conventional theory. In d=6 dimensions, the theory turns
out to be energetically stable, perturbatively renormalizable,
and trivial (the conventional one being asymptotically free and
unstable). Moreover, in $d =6-\epsilon$ dimensions, the theory
has...
Dr
Jared Yamaoka
(Pacific Northwest National Lab)
02/12/2014, 17:55
The Belle II experiment is now being constructed
at the KEK laboratory in Japan. This project represents
a substantial upgrade to both the Belle detector and
the KEKB accelerator. The Belle II experiment will
record 50~ab$^{-1}$ of data, a factor of 50 more than
that recorded by the Belle experiment. This large data set,
combined with the low backgrounds and high trigger...
Michael Duerr
(MPIK Heidelberg)
02/12/2014, 18:00
I present extensions of the Standard Model, where the global symmetries baryon and lepton number are gauged and subsequently spontaneously broken. These theories are consistent with collider bounds and cosmology, and have intriguing consequences due to the requirement of anomaly cancellation: lepto-baryon fields that have to be introduced can be a dark matter candidate and/or generate neutrino...
Antonio Marrone
(Univ. of Bari)
02/12/2014, 18:10
This work is being performed in collaboration with E. Lisi (INFN, Bari, Italy) and F. Capozzi (U. of Bari, Italy). The proposed PINGU experiment (Precision IceCube Next Generation Upgrade) will study low energy atmospheric neutrinos and it will allow to probe the neutrino mass hierarchy, after 3-5 years of data taking. It will also be sensitive to the theta_23 octant and it will help to...
Prof.
Philip Mannheim
(University of Connecticut)
02/12/2014, 18:15
We discuss some recent applications of PT symmetry to fundamental physics. We show that the recognition (Bender and Mannheim) that fourth-order derivative theories are PT symmetric theories rather than Hermitian ones enables one to show that such theories are ghost free and unitary. This then permits the fourth-order derivative conformal gravity theory to be a consistent quantum theory of...
Dr
Jared Yamaoka
(Pacific Northwest National Lab)
02/12/2014, 18:30
Recent measurements of exclusive and inclusive b->X_s l+ l-
and b->s gamma decays are reported from Belle.
Alfredo Aranda
(Universidad de Colima)
02/12/2014, 18:35
The use of discrete symmetries to explain fermion masses and mixings has been a popular and profitable tool in particle physics. Some of the most interesting features shown in both the quark and lepton sectors, specially with regards to their mixing patterns, strongly hint at the presence of some underlying "flavor" symmetry. On the other hand, the puzzling wide spread in the mass spectrum of...
Jean Alexandre
(King's College London)
02/12/2014, 18:50
I will show the consistency of a non-Hermitian Lagrangian describing free fermions, and perform the Foldy-Wouthuysen transformation in order to map the Hamiltonian on a Hermitian one.
Ms
Deepanwita Dutta
(IIT Guwahati)
02/12/2014, 18:55
We search for the decay $B_{s}\rightarrow\gamma\gamma$ and measure the branching fraction for $B_{s}\rightarrow\phi\gamma$ using 121.4~$\textrm{fb}^{-1}$ of data collected at the $\Upsilon(\mathrm{5}S)$ resonance with the Belle detector at the KEKB asymmetric energy B-factory located at the High Energy Accelerator Research Organization (KEK), Japan. These are flavor changing neutral current...
Mr
Thomas Neder
(University of Southampton)
02/12/2014, 19:05
An important class of flavour groups that are subgroups of U(3) and that predict experimentally viable lepton mixing parameters including Majorana phases, is the Delta(6n^2) series. The most well-known member is Delta(24)=S_4. I present results of several extensive studies of lepton mixing predictions obtained in models with a Delta(6n^2) flavour group that preserve either the full Klein...
Prof.
cecilia jarlskog
(lund university)
03/12/2014, 09:00
T, C, P, CP symmetries
The speaker intends to present a "historical" talk on CP
violation discussing what have been the most important lessons learned so
far and what can be said about the future prospects in this field.
Gustavo Branco
(Instituto Superior Tecnico)
03/12/2014, 09:45
T, C, P, CP symmetries
We address some open questions on CP Violation and Flavour, including the
nature and scale of New Physics and the origin of CP Violation. In the
lepton sector, we conjecture that the observed pattern of leptonic mixing may just
reflect a quasi-degeneracy of Majorana Neutrino Masses.
Prof.
Antonio Di Domenico
(Universita Sapienza e INFN, Roma I (IT))
03/12/2014, 11:00
The status of present experiments and future projects with kaons is reviewed,
focusing on prospects for discrete symmetries tests.
Prof.
Stephen King
(University of Southampton)
03/12/2014, 11:45
In this talk we shall give an overview of the role of discrete symmetries, including both CP and family symmetry, in constructing unified models of quark and lepton (including especially neutrino) masses and mixing. Various different approaches to model building will be described, denoted as direct, semi-direct and indirect, and the pros and cons of each approach discussed. Particular examples...
Joannis Papavassiliou
(University of Valencia)
03/12/2014, 12:30
Strongly Coupled Gauge Theories
I will review recent progress in our understanding
of the infrared dynamics of the QCD Green's functions,
derived from the close synergy between lattice simulations
and Schwinger-Dyson equations. Particular attention
will be devoted to the elaborate nonperturbative mechanisms
that endow the fundamental degrees of freedom (quarks and gluons)
with dynamical masses.
Ivo de Medeiros Varzielas
(University of Southampton)
03/12/2014, 14:30
Topics on addding CP to flavour symmetries.
Masoud Ghezelbash
(University of saskatchewan)
03/12/2014, 14:30
Inspired by the convoluted solutions for two intersecting M2 branes in eleven-dimesnional supergravity, in which one brane in the system is completely localized along the overall and relative transverse coordinates while the other brane in the system is localized only along the overall transverse coordinates, we construct two classes of exact solutions to Einstein-Maxwell theory in six and...
Stefan Olejnik
(Institute of Physics, Slovak Acad. Sci., Bratislava)
03/12/2014, 14:30
Beside anniversaries of the important discoveries celebrated at this workshop, there is another worth to mention: The first paper attempting direct calculation of the Yang-Mills vacuum wave-functional was published in 1979 [J. Greensite, Nucl. Phys. **B158** (1979) 469]. I will review some recent results of the determination of the vacuum wave-functional in Monte Carlo simulations of SU(2)...
Marco Laveder
(Dipartimento di Fisica Galileo Galilei)
03/12/2014, 15:00
I review the experimental indications in favor of
short-baseline neutrino oscillations. I discuss their
interpretation in the framework of neutrino mixing schemes with one or
more sterile neutrinos which have masses around the eV scale. Taking
into account also cosmological constraints, I present arguments
in favor of 3+1 neutrino mixing with one sterile neutrino at the eV
scale. I...
Dr
Sven Krippendorf
(University of Oxford)
03/12/2014, 15:00
We present soft supersymmetry breaking terms in type IIB de Sitter string vacua after moduli stabilisation. We focus on models in which the Standard Model is sequestered from the supersymmetry breaking sources and the spectrum of soft-terms is hierarchically smaller than the gravitino mass.
Arlene Cristina Aguilar
(University of Campinas)
03/12/2014, 15:05
In this talk we present a new method for determining the nonperturbative
quark-gluon vertex, which constitutes a crucial ingredient for a variety of theoretical and phenomenological studies. This new method relies heavily on the exact all-order relation connecting the conventional quark-gluon vertex with the corresponding vertex of the background field method, which is Abelian-like. The...
Matthew Tamsett
(University of Sussex)
03/12/2014, 15:30
The recently completed NuMI Off-Axis Nu_e Appearance (NOvA) long-baseline neutrino oscillation experiment, will use an upgraded NuMI neutrino source at Fermilab in conjunction with a 300-ton near-detector and a 14-kton far-detector to explore the neutrino sector. NOvA uses a fully active, finely segmented detector design that offers superb event identification capability, allowing precision...
Mike Hewitt
(Canterbury Christ Church University)
03/12/2014, 15:30
Thermal duality is a relationship between the behaviour of heterotic string models of the E(8)xE(8) or SO(32) types at inversely related temperatures, a variant of T duality in the Euclidean regime. This duality would have consequences for the nature of the Hagedon transition in these string models. We propose that the vacuum admits a family of deformations in situations where there are closed...
Dr
Peter Millington
(Technische Universität München (TUM))
03/12/2014, 15:40
We illustrate a number of interesting features of a nominal departure from standard quantum field theory, constructed so as to permit momentum eigenstates of both positive and negative energy. Postulating an additional discrete symmetry of the free field theory under the interchange of positive- and negative-frequency modes, we show that one can obtain tree-level source-to-source amplitudes...
Beatrix Hiesmayr
(University of Vienna)
03/12/2014, 16:35
John St. Bell was known and hired as a "particle physicist" when he came up with his work on hidden parameters. The aim of this talk is to discuss whether his theorem can be brought back to those systems that do not build up ordinary matter and light. Indeed, entanglement can be witnessed in decay processes governed by the weak interaction, e.g., in flavour oscillating systems or hyperon...
Owe Philipsen
(Goethe-University Frankfurt)
03/12/2014, 16:35
QCD thermodynamics is crucial for the physics
of the early universe, heavy ion collisions and compact stars.
However, predictions by lattice simulations are very costly
or, in the case of finite baryon density, even impossible because
of a sign problem.
Starting from Yang-Mills theory, it is shown how to use strong
coupling methods to construct a 3d effective theory which
accurately...
Prof.
George Leontaris
(Ioannina University)
03/12/2014, 16:35
We discuss the origin of discrete symmetries in F-theory models. Motivated by the
neutrino sector, we focus on non-abelian discrete family symmetries associated to
monodromies. We combine them with SU(5) GUT and examine their low energy implications.
Giuseppe Vitiello
(University of Salerno, Italy)
03/12/2014, 16:35
TIME-REVERSAL, LOOP-ANTILOOP SYMMETRY
AND THE BESSEL EQUATION
GIUSEPPE VITIELLO
Dipartimento di Fisica “E. R. Caianiello”
Università di Salerno, 84080 Salerno, Italy and
INFN, Gruppo Collegato di Salerno, Italy
vitiello@sa.infn.it
The Bessel equation is shown to be equivalent, under suitable transformations, to a
system of two damped/amplified parametric oscillator...
Jim Talbert
(University of Oxford)
03/12/2014, 17:10
We present a novel procedure for identifying discrete, leptonic flavour symmetries, given a class of unitary mixing matrices. By creating explicit 3D representations for generators of residual symmetries in both the charged lepton and neutrino sector, we reconstruct large(r) non-abelian flavour groups using the GAP language for computational finite algebra. We use experimental data to...
Andrew Meadowcroft
(University of Southampton)
03/12/2014, 17:10
F-theory is known to admit a number of discrete symmetries, such as $A_4$, $D_4$ and $Z_N$ symmetries. An introduction to the methods involved will be provided, with a view to discussing current work in the field.
Fabio Siringo
(Università degli Studi di Catania)
03/12/2014, 17:10
> The principle of stationary variance is advocated as a viable variational approach
to gauge theories where the simple Gaussian Effective Potential (GEP) is known to be
useless. The method can be regarded as a second-order extension of the GEP and seems
to be suited for describing the strong coupling limit of non-Abelian gauge theories.
The single variational parameter of the GEP is...
Catalina Curceanu
(LNF-INFN)
03/12/2014, 17:10
The “measurement problem” in quantum mechanics continues to remain a problem which needs an explanation.
A possible solution to this problem is the modification of the Schrodinger equation within the so-called dynamical reduction models. The dynamical reduction models were put forward alternatively to the "standard" quantum mechanics' Schrodinger equation, followed by a "alla von Neumann"...
Mu-Chun Chen
(University of California at Irvine)
03/12/2014, 17:45
We discuss the origin of CP violation in settings with a discrete (flavor) symmetry G. We show that physical CP transformations always have to be class-inverting automorphisms of G. This allows us to categorize finite groups into three types: (i) Groups that do not exhibit such an automorphism and, therefore, in generic settings, explicitly violate CP. In settings based on such groups, CP...
José Rodriguez Quintero
(University of Huelva)
03/12/2014, 17:45
We sketch an approach to a computation of the pion's valence dressed-quark GPD based upon a Rainbow-Ladder truncation of the QCD Dyson-Schwinger equations. In particular, our starting point is the appropriate recasting of the computed GPD as the well-known double distribution ansatz, which automatically fulfils all the constraints required by the observing of discrete and Lorentz symmetries.
Maria Dimou
(Southampton University)
03/12/2014, 18:15
The aim of this work is to provide an explanation for the masses and mixings of the Standard Model fermionic content as well as for its supersymmetric extensions, using an S4xU(1) family symmetry in an SU(5) background. The results are given in terms of mass insertion parameters and are compared to the latest experimental limits.
Javier Fuentes-Martín
(IFIC University of Valencia-CSIC)
03/12/2014, 18:20
In this talk I will present two invisible axion model implementations. The first one consists in an ultraviolet completion of the so-called aligned two-Higgs-doublet model that solves the strong CP problem. I will show that, for certain decoupling scenarios, mixing effects among the scalar fields allow for the possibility to obtain a rich scalar sector at the weak scale.
The second model...
Hans-Thomas Elze
(Universita di Pisa)
03/12/2014, 18:30
It has been shown that the dynamics of discrete (integer-valued) Hamiltonian cellular automata can only be defined consistently, if it is linear in analogy to the linearity of unitary evolution in quantum mechanics. This suggests to look for an invertible map between such automata and continuous quantum mechanical models. Based on sampling theory, such a map can indeed be constructed and leads...
Catarina Simões
(IFPA, University of Liège)
03/12/2014, 18:45
We look for minimal chiral sets of fermions beyond the Standard Model that are anomaly-free and, simultaneously, vector-like particles with respect to color SU(3) and electromagnetic U(1). We then study whether the addition of such particles to the Standard Model particle content allows for the unification of gauge couplings at a high energy scale, above 5.0x10^15 GeV so as to be safely...
Franklin Potter
(S)
03/12/2014, 18:50
T, C, P, CP symmetries
I have the only first principles derivation of the PMNS and CKM matrices within the realm of the Standard Model lagrangian. The mixings originate from the generators of three discrete (i.e., finite) binary rotational subgroups of the EW local gauge group SU(2) x U(1) for three lepton families in R
$^3$ and four related discrete binary rotation subgroups for four quark families in...
Dr
Johann Marton
(Oesterreichische Akademie der Wissenschaften)
03/12/2014, 19:05
The Pauli Exclusion Principle (PEP) is one of the most fundamental rules of nature and thus a major pillar of modern physics.
According to many observations PEP must be extremely well fulfilled.
Nevertheless numerous experimental investigations were performed to search for a small PEP violation. The
experiment VIP2 at the Gran Sasso underground laboratory is designed to test the Pauli...
Miguel Crispim Romao
(University of Southampton)
03/12/2014, 19:15
Supersymmetry/Supergravity/Strings and Branes
We consider Grand Unified Theories based on $SO(10)$ which originate from $M$-theory on
$G_2$-manifolds. In this framework we are naturally led to a novel solution of
the doublet-triplet splitting problem involving an extra ${\bf 16}_X,{\bf {\overline{16}}}_X$ vector-like pair by considering discrete symmetries of the extra dimensions and preserving unification. Since Wilson line breaking...
Rabindra Mohapatra
(University of Maryland, College Park)
04/12/2014, 09:00
I will discuss the possibility that physics of neutrino mass is a TeV scale phenomenon which can be probed at the LHC via the searches for right handed W-bosons and the heavy right handed neutrinos and other low energy experiments.The same TeV scale model also leads to successful leptogenesis as a way to understand the origin of matter in the universe.
Thus, the Large Hadron Collider can...
Apostolos Pilaftsis
(University of Manchester (GB))
04/12/2014, 09:45
Strongly Coupled Gauge Theories
The formalism introduced by Cornwall, Jackiw and Tomboulis (CJT)
provides a systematic analytic approach to consistently describing
non-perturbative effects in Quantum Thermal Field Theory. One major
limitation of the CJT effective action is that its loopwise expansion
introduces residual violations of possible global symmetries, thus
giving rise to massive Goldstone ...
David Evans
(University of Birmingham (GB))
04/12/2014, 11:00
At extreme energy densities, hadronic matter undergoes a phase transition into a deconfined system of quarks and gluons, known as a Quark-Gluon Plasma (QGP). Such a state of matter may be formed by colliding ultra-relativistic heavy-ions together, which reproduce the high temperatures and densities thought to have existed about ten microseconds after the Big Bang. Lead ions have been...
Prof.
Maria Krawczyk
(Institute of Theoretical Physics, Warsaw University)
04/12/2014, 11:45
Higgs Physics at LHC and Beyond
Testing models with Higgs doublets at LHC will be discussed.
I will focus on the Inert Doublet Model, with the exact Z2 symmetry, which offers viable Dark Matter candidates. LHC data together with Planck results
on relic density provide very strong constraints on DM mass and its coupling to the Higgs boson. Some results on the potential of ILC in testing such models will be shown as well.
Prof.
Tom W.B. Kibble
(Imperial College London)
04/12/2014, 12:30
Higgs Physics at LHC and Beyond
In this talk, I will recall the history of the development of the unified electroweak theory, incorporating the symmetry-breaking Higgs mechanism, as I saw it from my standpoint as a member of Abdus Salam's group at Imperial College. I will start by describing the state of physics in the years after the Second World War, explain how the goal of a unified gauge theory of weak and...
Martin Flechl
(Austrian Academy of Sciences (AT))
04/12/2014, 14:30
We present an overview of recent results in Higgs boson physics obtained with the ATLAS and CMS experiments at the Large Hadron Collider (LHC) located at CERN, Geneva. The focus is on measurements of the properties of the recently discovered Higgs boson with a mass of about 125 GeV. We will then present a brief selection of results in searches for Higgs bosons beyond the Standard Model. We...
Dr
Miguel Nebot Gómez
(CFTP - Lisbon)
04/12/2014, 14:30
Extending the Standard Model through the inclusion of additional vector-like quarks provides a rich playground for New Physics searches both in the Flavour sector and at the LHC. A detailed analysis of present constraints and future prospects with special emphasis on potential deviations from the Standard Model expectations in selected observables is presented.
Kurt Langfeld
(Plymouth University)
04/12/2014, 14:30
Finite density quantum field theories have evaded first principle Monte-Carlo
simulations due to the notorious sign-problem. The partition function of such
theories appears as the Fourier transform of the generalised density-of-states,
which is the probability distribution of the imaginary part of the action. With
the advent of Wang-Landau type simulation techniques and recent advances...
Tevong You
(King's College London)
04/12/2014, 15:00
The discovery of the Higgs boson closes the last remaining degree of freedom in the space of Standard Model physics, thus allowing unprecedented model-independent sensitivity to BSM physics. We may use this sensitivity by formally treating the Standard Model the way it has always been thought of: as an effective field theory supplemented by higher-dimensional operators. This approach...
Denise Vicino
(INFN University of Padova)
04/12/2014, 15:00
A mechanism to generate flavour hierarchy via 5D wave-function localization is revisited in the context of SO(10) grand unified theory. In an extra-dimension compactified on an orbifold, fermions (living in the same 16 representation of SO(10) ) result having exponential zero-modes profiles. The breaking of SO(10) down to SU(5) \times U(1)_X provides the key parameter that distinguishes the...
Massimo Lenti
(Universita e INFN (IT))
04/12/2014, 15:05
New final results from an analysis of about 400 K+- --> pi+- gamma gamma rare decay candidates collected by the NA48/2 and NA62 experiments at CERN during low intensity runs with minimum bias trigger configurations are presented. The results include a model-independent decay rate measurement and fits to Chiral Perturbation Theory (ChPT) description. The data support the ChPT prediction for a...
Dr
Hèlios Sanchis Alepuz
(Justus-Liebig University Giessen)
04/12/2014, 15:05
The combination of Dyson-Schwinger and Bethe-Salpeter equations allows, in principle, for an *ab-initio* continuum-QCD study of hadrons and their properties. Glueballs, mesons, baryons, etc. are all treated in a unified framework. Moreover it has the advantage that that it gives access to all momentum regimes and all quark masses, connecting the deep infrared to perturbative QCD and light- and...
Bhupal Dev
(University of Manchester)
04/12/2014, 15:30
In order to satisfy the current LHC Higgs data, which require the couplings of the observed 125 GeV Higgs boson to be close to the Standard Model (SM) expectations, any extended Higgs sector must lead to the so-called SM 'alignment limit'. In the context of the Two Higgs Doublet Model (2HDM), this alignment is often associated with either decoupling of the heavy Higgs sector or accidental...
Fatima Soomro
(Ecole Polytechnique Federale de Lausanne (CH))
04/12/2014, 15:35
LHCb is a forward spectrometer covering a unique rapidity range at the LHC and with excellent capability to detect decays of heavy flavour mesons. LHCb has recoreded an integrated luminosity of 3fb-1 of proton-proton collisions during 2011 and 2012. Recent results from the LHCb in rare decays of beauty and charm mesons are shown.
Prof.
Arttu Rajantie
(Imperial College Sci., Tech. & Med. (GB))
04/12/2014, 15:40
In spite of a vast amount research over several decades, the behaviour of magnetic monopoles in quantum field theory is still poorly understood. Quantum field theory formulation of elementary magnetic monopoles is plagued by lack of manifest locality and Lorentz invariance, which makes calculations very cumbersome. Solitonic 't Hooft-Polyakov monopoles avoid this problem, but even in their...
David G. Cerdeno
(University of Durham)
04/12/2014, 16:35
The SuperCDMS experiment attempts to detect WIMP dark matter particles through their elastic scattering off Ge nuclei. The simultaneous measurement of the energy deposited in ionization and phonons allows for an excellent discrimination of nuclear recoils (expected from WIMP interactions) versus electron recoils (due to background events). The current experimental setup features new detectors...
Daniele Teresi
(University of Manchester)
04/12/2014, 16:35
The 3-loop Standard Model (SM) effective potential suffers from infrared (IR) divergences due to the Goldstone bosons. These IR problems start at lower loop-orders for the derivatives of the potential. We study these issues by means of the recently developed *symmetry-improved CJT effective action*. Our formalism, as opposed to other existing approaches, is particularly appropriate for...
Edward Daw
(The University of Sheffield)
04/12/2014, 17:05
I present a progress report on the direct search for dark matter axions with ADMX upgraded with low noise RF SQUID amplifiers and cryogenics. Axions are a well motivated candidate to explain the discrepancy between the observed baryonic matter density and that inferred from precision measurements of the microwave background anisotropy, gravitational lensing, and the dynamics of spiral...
Margarida Nesbitt Rebelo
(Instituto Superior Tecnico (IST))
04/12/2014, 17:05
We poropose an extension of the hypothesis of Minimal
Flavour Violation to two Higgs doublet Models without
the assumption of Natural Flavour Conservation in the
Higgs sector. The potentially dangerous flavour changing
neutral currents are suppressed by small entries of the
CKM matrix as a result of a discrete symmetry imposed to
the Lagrangian. This discrete symmetry is also...
Alessandro Pilloni
(Sapienza U.)
04/12/2014, 17:05
In b -> s gamma transitions, the standard model predicts that B0 (antiB0) decays
are related predominantly to the presence of right (left) handed photons in the final state.
Therefore, the mixing-induced CP asymmetry in B -> fCP decays, where
fCP is a CP eigenstate, is expected to be small. This prediction may be altered
by new-physics (NP) processes in which opposite helicity...
Biagio Lucini
(Swansea University)
04/12/2014, 17:10
A novel strong interaction beyond the standard model could provide a dynamical explanation of electroweak symmetry breaking. Experimental results strongly constrain properties of models that realise this mechanism. Whether these constraints are obeyed by any strongly interacting quantum field theory is a non-perturbative problem that needs to be addressed by first-principle calculations. Monte...
Nuno Viegas Guerreiro Leonardo
(Purdue University (US))
04/12/2014, 17:30
The large production rates of heavy flavoured particles at the LHC provide excellent opportunities to test the standard model and probe for new physics effects. A review of selected recent measurements by ATLAS and CMS based on LHC Run I data is presented, along with prospects for coming LHC runs.
Lee Barnby
(University of Birmingham (GB))
04/12/2014, 17:30
During the first LHC run the ALICE experiment collected data from pp, p-Pb and Pb-Pb collision systems. A selection of recent results will be presented, including those which focus on characterisation of the deconfined system formed in heavy-ion collisions. The future prospects for Run 2 and for the upgrade of ALICE beyond that will also be discussed.
Daniele Binosi
(ECT* Fondazione Bruno Kessler)
04/12/2014, 17:50
I discuss certain characteristic features encoded in some of the fundamental QCD Green's functions, whose origin can be traced back to the (Landau gauge) nonperturbative masslessness of the ghost field. Specifically, the ghost loops that contribute to these Green's functions display infrared divergences, akin to those encountered in the perturbative treatment, in contradistinction to the...
Dr
Thomas Edward Latham
(University of Warwick (GB))
04/12/2014, 18:05
We report a Dalitz plot analysis of the charmless hadronic decays of charged B mesons to the final state Ks pi+ pi0 using the full BaBar dataset of 471 million BBbar events collected at the Upsilon(4S) resonance. We observe an excess of signal events and measure the branching fractions and CP asymmetries, for the different resonant decay modes and inclusively.
Vincenzo Branchina
(University of Catania)
04/12/2014, 18:10
Higgs Physics at LHC and Beyond
Contribution (25 + 5 min)
According to the usual analysis, if the Standard Model (SM) is
valid up to the Planck scale $M_P$, the stability condition of
the electroweak (EW) vacuum (stable, metastable or unstable)
mainly depends on the Higgs and top masses, $M_H$ and $M_t$.
The analysis is performed by considering SM interactions only,
as it is argued that new physics at $M_P$, although present,
has no...
Dr
Melina Gomez Bock
(Universidad de las Americas Puebla)
04/12/2014, 18:35
The Higgs sector with more than one Higgs doublet may have de\-ge\-ne\-ra\-cy in its physical states.
Considering also $CP$ symmetry is not conserved in the Higgs sector, then the neutral Higgs states would not have a defined $CP$ charge,{\it i.e.} there is a mixing within scalar and pseudoscalar components of the Higgs doublets. This situation will occur for the cMSSM, {\it i.e.} with...
Fairouz Malek
(LPSC-Grenoble , CNRS-IN2P3 (FR))
04/12/2014, 18:35
The Standard Model of particle physics is a sensational success, especially since the discovery the 125 GeV Higgs boson.
However, there are still numerous unanswered questions… Why is the Higgs so light? Do the interactions couplings unify and how can gravity be included? Why three fermion generations? What is dark matter?
Theories Beyond the Standard Model (BSM), such as Grand Unified...
Karim Massri
(University of Birmingham (GB))
04/12/2014, 18:55
Recent results and prospects for precision tests of the Standard Model in kaon decay in flight experiments at CERN are presented. A measurement of the ratio of leptonic decay rates of the charged kaon at a 0.4% precision constrains the parameter space of new physics models with extended Higgs sector, a fourth generation of quarks and leptons or sterile neutrinos.
Searches for heavy neutrino...
Chakrit Pongkitivanichkul
(King's College London)
04/12/2014, 19:05
String theory suggests that cosmology is populated by many light pseudoscalar axions (an ``Axiverse" scenario). Their presence in early universe give rise to dark radiation, non-standard model
contribution to radiation imprinted onto Cosmic Microwave Background (CMB). Due to complexity of string compactification, it is natural to expect number of axions to be several hundreds up to thousands....
Myriam Mondragon
(urn:Google)
04/12/2014, 19:05
We present an overview of the flavour groups S3 and Q6 in models with an extended Higgs sector. We extend the S3 results to SU(5) Grand Unified theories with Q6 as flavour group. We find the generic form of the mass matrices both in the quark and lepton sectors, which are consistent with experimental data. We reproduce, according to current data, the mixing in the CKM matrix. In the leptonic...
Jean-Pierre Derendinger
(Universitaet Bern (CH))
05/12/2014, 09:00
Supersymmetry/Supergravity/Strings and Branes
I give a review of Supergravity theories with emphasis on recent developments and prospects.
Alon Faraggi
(U)
05/12/2014, 09:45
Supersymmetry/Supergravity/Strings and Branes
Adaptation of the Hamilton-Jacobi formalism to quantum mechanics yields a
cocycle condition which is invariant under D-dimensional Mobious transformations. The invariance under Mobious transformations can only be implemented consistently if space is compact and implies energy quantisation and undefinability of quantum trajectories. It implies the existence of a fundamental length scale that...
Bobby Samir Acharya
(Abdus Salam Int. Cent. Theor. Phys. (IT))
05/12/2014, 11:00
Supersymmetry/Supergravity/Strings and Branes
After reviewing the origin of discrete symmetries like B and L and CP in string/M theory we
go on to address the origin and fate of such symmetries in phenomenological Grand Unified models which derive from string/M theory. The impact on the nature of dark matter and other phenomenological consequences is discussed.
Prof.
Neville Harnew
(University of Oxford (GB))
05/12/2014, 12:30
Experimental results from and prospects at LHC and new facilities.
The physics highlights of the LHCb experiment will be reviewed, based on results from up to 3 fb^-1 of pp-collision data. Measurements of the angles of the unitary triangle will be highlighted, together with limits on new physics from rare b-decays, plus the observation of new baryonic states. Physics prospects for the upcoming Run-2 and the LHCb upgrade will also be summarized.
Jorge Casaus
(Centro de Investigaciones Energ. Medioambientales y Tecn. - (ES)
05/12/2014, 14:30
AMS-02 is a general purpose cosmic ray detector operating on the International Space Station since 19 May 2011. Results based on the data collected during the first 2.5 years of the mission include high precision measurements of the proton, helium, electron and positron fluxes, and the boron to carbon ratio in the energy range from ~1GeV/n to ~1TeV/n. The positron fraction is determined in the...
Isabella Garzia
(INFN)
05/12/2014, 14:30
We report the measurement of the asymmetry $A_{CP}$ of the branching fractions of $D^0\rightarrow K^-\pi^+$ in the CP-odd and CP-even eigenstates using a data sample of $2.92$ fb$^{-1}$ collected with the BESIII detector at the center-of-mass energy $\sqrt{s}=3.773$ GeV.
With the measured $A_{CP}$ the...
Michael Christian Rammensee
(CERN)
05/12/2014, 14:30
Despite the absence of experimental evidence, weak scale supersymmetry remains one of the best motivated and studied Standard Model extensions. This talk summarises recent ATLAS and CMS results for searches for supersymmetric (SUSY) particles. Weak and strong production in both R-Parity conserving and R-Parity violating SUSY scenarios are considered. The searches involved final states...
Antonio Figueiredo
(CFTP / IST - U. Lisbon)
05/12/2014, 15:00
$\require{cancel}$
$\def\SUSY{\text{SUSY}}$
$\def\nSUSY{\cancel{\text{SUSY}}}$
$\def\Msoft{m_\text{soft}}$
$\def\nSUSYEWSB{\nSUSY_{\text{EWSB}}}$
$\def\nSUSYEWS{{\nSUSY}_{\text{EWS}}}$
Radiatively generated neutrino masses ($m_\nu$) are proportional to supersymmetry (SUSY) breaking, as a result of the SUSY non-renormalisation theorem. In this work, we investigate the space of SUSY...
Dr
Lukas Nellen
(I. DE CIENCIAS NUCLEARES, UNAM)
05/12/2014, 15:00
We will present highlights from the Pierre Auger Observatory. We will also present the current status
and plans for upgrades of the Observatory. We will mention briefly
the programme of the Observatory to search for new, exotic physics.
Dr
Vasiliki Mitsou
(IFIC Valencia (ES))
05/12/2014, 15:30
$R$-parity violating supersymmetric models (RPV SUSY) are becoming increasingly more appealing than its $R$-parity conserving counterpart in view of the hitherto non-observation of SUSY signals at the LHC. In this talk, RPV scenarios where neutrino masses are naturally generated will be discussed, namely RPV through bilinear terms (bRPV) and the "$\mu$-from-$\nu$" supersymmetric standard model...
Luka Santelj
(KEK, Japan)
05/12/2014, 15:35
We present some of the recent measurements of $CP$ violation in $B$ decays based
on the full data sample containing 772 million $B$ meson pairs collected at
the $\Upsilon(4S)$ resonance using the Belle detector at the KEKB
asymmetric-energy $e^+e^-$ collider. In particular, we present measurements of
time-dependent $CP$ violation parameters in $B^0 \to \eta'K^0$, $B^0 \to \omega K^0_S$...
Dr
Stefan Groot Nibbelink
(urn:Google)
05/12/2014, 16:30
We investigate orbifold and smooth Calabi-Yau compactifications of the non- supersymmetric heterotic SO(16)×SO(16) string. We focus on such Calabi-Yau backgrounds in order to recycle commonly employed techniques, like index theorems and cohomology theory, to determine both the fermionic and bosonic 4D spectra. We argue that the N=0 theory never leads to tachyons on smooth Calabi-Yaus in the...
Dr
Yevgeniy Petrov
(University of British Columbia, for the T2K collaboration)
05/12/2014, 16:30
The T2K long-baseline experiment is located in Japan and is designed to study oscillations of muon neutrinos. T2K receives a beam of muon neutrinos peaked at 0.6 GeV that are produced at J-PARC accelerator complex by converting a beam of 30-GeV protons hitting a graphite target. Upon travelling 295 km, neutrinos are detected by the Super-Kamiokande water Cherenkov detector. Located at 280 m...
Mrs
Nuria Rius
(IFIC, Valencia University-CSIC)
05/12/2014, 16:30
Neutrinos in cosmology and astroparticle physics
We propose a mechanism for baryogenesis from particle decays or annihilations that can work at the TeV scale. Some heavy particles annihilate or decay into a heavy sterile neutrino $N$ (with $M \gtrsim 0.5$~TeV) and a ``light'' one $\nu$ (with $m \ll 100$~GeV), generating an asymmetry among the two helicity degrees of freedom of $\nu$. This asymmetry is partially transferred to Standard Model...
Dr
Mitsuhiro Kimura
(Universitaet Bern (CH))
05/12/2014, 16:59
The AEgIS collaboration is planning to measure the gravitational acceleration of antihydrogen, the simplest atom consisting entirely of antimatter, with a precision of 1% as a first achievement. The experiment, based at the Antiproton Decelerator of CERN, provides important information for the development of a quantum theory of gravity.
The experimental setup consists of a nested penning...
Daniele Teresi
(University of Manchester)
05/12/2014, 17:00
Flavour effects play an important role in the statistical evolution of particle number densities in several particle physics phenomena. We present a fully flavour-covariant formalism for transport phenomena, in order to consistently capure all flavour effects in the system. We explicitly study a Resonant Leptogenesis (RL) scenario, and show that flavour covariance requires one to consider...
Viraf Mehta
(Ruprecht-Karls Universität Heidelberg)
05/12/2014, 17:00
Although additional low scale U(1)s have been discussed extensively in SUSY GUTs and superstring models, having a viable light, extra U(1) in worldsheet heterotic string constructions has proven to be a challenge. Here, we present the construction of heterotic string models using the free fermionic formulation and focus on how viable U(1)s may arise. We motivate an example as an appealing...
Dr
Andrea (on behalf of the OPERA Coll.) Longhin
(INFN Laboratori Nazionali di Frascati)
05/12/2014, 17:00
The OPERA experiment at the Gran Sasso underground laboratory is searching
for nu_mu -> nu_tau oscillations in appearance mode in the CNGS neutrino beam.
Four nu_tau candidate events have been found so far, using a sub-sample of data
from the 2008-2012 runs. Given the number of analysed events and the low background,
nu_mu -> nu_tau oscillations are established with a significance of 4.2...
sarben sarkar
(King's College London)
05/12/2014, 17:25
We consider a model of an expanding Universe in string theory that yields CPT violation for fermions, in the sense of different dispersion relations for fermions and antifermions. These are induced by a cosmological background with constant torsion provided by the Kalb–Ramond antisymmetric tensor field (axion) of the string gravitational multiplet. This effect induces different densities of...
William Alan Bertsche
(University of Manchester (GB))
05/12/2014, 17:29
Precise low-energy measurements of antimatter and subsequent comparison with equivalent matter measurements offer an experimental approach to address the question of why the Universe appears to be largely composed of matter. The observed abundance of matter relative to antimatter is not adequately explained by our present theories which would suggest that largely equal quantities should have...
Manuel Walter
(University of Zurich)
05/12/2014, 17:30
{\sc Gerda} is designed to search for the neutrinoless double beta (0$\nu\beta\beta$) decay, a lepton number violating process. It
employs bare high-purity germanium diodes enriched to 86\,\% in $^{76}$Ge directly immersed in liquid argon. Phase~I operated till May 2013
with a mean background of 1$\cdot10^{-2}$\,cts/(keV$\cdot$kg$\cdot$yr) near the Q-value. GERDA sets a new lower limit...
Gabriele Honecker
(Johannes Gutenberg University Mainz)
05/12/2014, 18:00
As recently observed, discrete Abelian symmetries can remain as remnants in the low-energy effective action of string compactifications with massive U(1) symmetries. As I will discuss in this talk, the Peccei-Quinn symmetry arises naturally in this way in D-brane models with the QCD axion as an open string excitation and several other (invisible) axions from both the open and closed string sectors.
Eberhard Widmann
(Austrian Academy of Sciences (AT))
05/12/2014, 18:04
Antihydrogen is the simplest atom consisting purely of antimatter. Its matter counterpart, hydrogen, is one of the best studied atomic systems in physics. Thus comparing the spectra of hydrogen and antihydrogen offers some of the most sensitive tests of matter-antimatter symmetry. The ASACUSA collaboration is pursuing an experiment to measure the ground-state hyperfine splitting of...
Christoph Luhn
(University of Siegen)
05/12/2014, 18:30
Discrete symmetries play a crucial role in physics beyond the Standard Model. Focusing on supersymmetric models which aim at explaining the family structure of quarks and leptons, I first discuss how Abelian discrete symmetries such as e.g. R-parity can emerge from an underlying U(1) family symmetry. Non-Abelian discrete family symmetries are motivated by the observation of large and very...
Masaki Hori
(Max-Planck Institute of Quantum Optics (DE))
05/12/2014, 18:34
The ASACUSA collaboration at CERN carries out two-photon laser spectroscopy of metastable antiprotonic helium atoms, which are three-body systems composed of a helium nucleus, an antiproton, and an electron. By measuring the transition frequencies of this atom and comparing the results with three-body QED calculations, the antiproton-to-electron mass ratio was determined to a precision of 1.4...
Hasan Sonmez
(University Of Liverpool)
05/12/2014, 18:55
I discuss the existence of discrete symmetries in the landscape of free fermionic heterotic–string vacua that were discovered via their classification by SO(10) GUT models and its subgroups such as the Pati-Salam, Flipped SU(5) and Standard-Like models. The classification is carried out by fixing a set of basis vectors and varying the GGSO projection coefficients entering the one–loop...
Prof.
Mairi Sakellariadou
(King's College London)
06/12/2014, 09:50
I will review almost-commutative manifolds, a light version of noncommutative geometry, proposed by Connes in order to explain the Standard Model of electroweak and strong interactions and eventually unify the Standard Model with Einstein's geometrical theory of gravity. I will briefly discuss the spectral action principle and the choice of the algebra. After a short presentation of the...
Mark Trodden
(University of Pennsylvania)
06/12/2014, 10:35
Cosmological aspects of non-commutative space-times
A new class of effective scalar field theories, with properties potentially interesting for cosmology, have emerged from attempts to modify gravity. I will discuss these "Galileon" field theories, emphasizing how they may be derived from the probe brane construction, and using this to generalize them to their associated curved-background and multi-field incarnations. I will comment on issues...
Silvia Pascoli
(University of Durham (GB))
06/12/2014, 11:50
Neutrinos in cosmology and astroparticle physics
Neutrino mass models can explain the origin of the baryon asymmetry in the Universe, via the leptogenesis mechanism. A review of its main features and of the possible connection between low energy leptonic CP-violation and the one responsible for the baryon asymmetry will be presented.
James Pinfold
(University of Alberta (CA))
06/12/2014, 12:35
In 2010 the MoEDAL experiment at the Large Hadron Collider (LHC) was unanimously approved by CERN's Research Board to start data taking in 2015. MoEDAL is a pioneering experiment designed to search for highly ionizing avatars of new physics such as magnetic monopoles or massive (pseudo-)stable charged particles. Its groundbreaking physics program defines over 30 scenarios that yield...
Jose Bernabeu
(IFIC)
06/12/2014, 13:20
T, C, P, CP symmetries
We are cellebrating the 50 anniversary of the discovery of
CP- Violation. The direct evidence of separate genuine Time-Reversal-
Violating Asymmetries, independent of CP-Violation and CPT-Invariance,
came recently in the transitions filtered by time-ordered decays of
Entangled Neutral B-mesons. These Symmetry Breakings are understood in
the quantum field theory of ElectroWeak...
David Evans
(University of Birmingham (GB))
Strongly Coupled Gauge Theories
I review the status of quark-gluon plasma and heavy ion results from the Large Hadron Collider.
