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Tobias Golling (Universite de Geneve (CH))07/04/2015, 09:00Planary TalkAn overview will be given of the high-pT-physics highlights from the Run I of the LHC. ATLAS and CMS have an extensive physics program of high-precision measurement and searches for physics beyond the Standard Model. The talk will cover Higgs boson, electroweak physics and top quark physics, as well as searches for hints of new phenomena that attempt to address the open questions we are...Go to contribution page
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Prof. Ilja Doršner (University of Split)07/04/2015, 09:28Planary TalkI will address implications of large lepton-quark-leptoquark couplings for direct leptoquark searches at Large Hadron Collider. It will be shown that flavour physics constraints allow for sizeable couplings of leptoquarks to the Standard Model fermions if these interact exclusively with charged leptons and quarks of the same generation. The leptoquark production mechanisms at LHC will be...Go to contribution page
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Fabio Maltoni (Universite Catholique de Louvain (UCL) (BE))07/04/2015, 09:51Planary Talk
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Alejandro de la Puente (TRIUMF)07/04/2015, 10:14Planary TalkWe study the collider signatures of a long-lived massive colored scalar transforming trivially under the weak interaction and decaying within the inner sections of a detector such as ATLAS or CMS. In our study, we assume that the colored scalar couples at tree-level to a top quark and a stable fermion, possibly arising from a dark sector or from supersymmetric extensions of the Standard Model....Go to contribution page
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Thomas Mannel (Siegen University)07/04/2015, 11:05Planary TalkI will review a few recent result in the field of semileptonic decays of bottom and charm hadrons, including both exclusive as well as inclusive decays.Go to contribution page
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Dr Kristopher Healey (Università di Torino)07/04/2015, 11:28Planary TalkIncluding the recently computed O(α ΛQCD^2}/mb^2) corrections, we perform an extraction of the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element Vcb and the most relevant parameters of the heavy quark expansion from the data of inclusive semileptonic B decays. Using a recent determination of the charm quark mass, we obtain |Vcb|=(42.21±0.78)×10^{-3} and the bottom quark mass in the...Go to contribution page
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Javier Virto (Universitat Siegen)07/04/2015, 11:51Planary TalkThree body non-leptonic decays of B mesons have been studied at B factories and at the LHC, and will become a benchmark for flavor and CP studies at Belle II. I will discuss the QCD properties of three body hadronic B decays in the different regions of phase space and their interconnection, matching the different factorization descriptions in each regime, in an attempt to reconstrunct the...Go to contribution page
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Robert Fleischer (CERN)07/04/2015, 12:14Planary TalkMeasurements of CP violation in $B^0_d\to J/\psi K_{\rm S}^0$ and $B^0_s\to J/\psi \phi$ decays play key roles in testing the quark-flavour sector of the Standard Model. The theoretical interpretation of the corresponding observables is limited by uncertainties from doubly Cabibbo-suppressed penguin topologies. With continuously increasing experimental precision, it is mandatory to get a...Go to contribution page
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Andreas Crivellin (CERN)07/04/2015, 14:30Planary TalkBy now the LHC found three deviations from the SM expectations in the flavour sector: B->K*mumu, B->Kmumu/B->Kee and h->taumu. I discuss a 2HDM with ganged Lmu-Ltau and vector-like quarks which can explain these anomalies. Charging also the baryons under a new U(1)' symmetry, the introduction of vector-like quarks can be avoided and interesting correlations with LHC searches arise.Go to contribution page
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Prof. Matthias Neubert (Johannes Gutenberg Universitat Mainz)07/04/2015, 14:53Planary Talk
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Joachim Brod (Johannes-Gutenberg-Universitaet Mainz)07/04/2015, 15:16Planary TalkIn this talk I present direct and indirect constraints on the interaction of the Higgs boson with electrons and light quarks. In addition, I briefly discuss the size of deviations from standard-model predictions that are expected in different models of flavor, and the impact on dark-matter direct detection.Go to contribution page
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Tilman Plehn (Heidelberg University)07/04/2015, 15:39Planary TalkAlready during the last run of the LHC the measurement of Higgs couplings has played a key role in understanding the nature of the observed resonance. I will review the main results, discuss their challenges on the experimental and theoretical side, and discuss first tests of possible analyses during Run2. They main challenge will be to properly interpret Higgs measurements in terms of an...Go to contribution page
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Daniel Litim07/04/2015, 16:30Planary TalkWe study the high-energy behaviour of interacting non-Abelian gauge fields, fermions, and scalars. In a regime where asymptotic freedom is absent, we find that the three types of fields cooperate to develop an interacting UV fixed point, strictly controlled by perturbation theory. The key features of asymptotic safety for UV model building and particle phenomenology are discussed.Go to contribution page
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Alejandro Celis (IFIC CSIC-Universitat de Valencia)07/04/2015, 16:53Planary TalkThe Peccei-Quinn mechanism is perhaps the most compelling solution we have for the strong-CP problem. The mechanism predicts the existence of a pseudo-Goldstone boson, the axion, which could account for the dark matter content of the Universe. The smallness of active neutrino masses can also be explained in axion models via a type-I see-saw mechanism, providing a dynamical origin for the...Go to contribution page
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Bohdan Grzadkowski (University of Warsaw)07/04/2015, 17:16Planary TalkWe extend the two-Higgs doublet models of Type I and Type II by adding a real gauge-singlet scalar S which is the Dark Matter (DM) candidate (2HDMS models). We impose theoretical constraints derived from perturbativity, stability, unitarity and correct electroweak symmetry breaking and require that one of CP-even Higgs bosons fit the LHC data for the ∼125.5 GeV state at the 68%~C.L. after...Go to contribution page
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Ramona Groeber (INFN)07/04/2015, 17:39Planary TalkIn this talk I will discuss weak-scale extensions of the Standard Model which automatically preserve the accidental and approximate symmetry structure of the Standard Model and which are hence invisible to indirect low-energy probes. By requiring the consistency of the effective field theory up to scales of $\Lambda_{eff}=10^{15}$ GeV and after applying cosmological constraints, there is...Go to contribution page
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Oscar Cata08/04/2015, 09:00Planary TalkLittle is known about the physics responsible for EWSB. While we expect the LHC to soon provide the first signals of direct detection, indirect information can in the meantime be gathered by using EFTs. In this talk I will explore, in particular, the crosstalk between flavor processes and such EFTs and show to which extent flavor physics can shed light upon the mechanism of EWSB.Go to contribution page
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Jure Zupan (University of Cincinnati)08/04/2015, 09:23Planary Talk
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Admir Greljo (Institute Jozef Stefan)08/04/2015, 09:46Planary TalkWe define a set of pseudo-observables characterizing the properties of Higgs decays in generic extensions of the Standard Model with no new particles below the Higgs mass. The pseudo-observables can be determined from experimental data, providing a systematic generalization of the "kappa-framework" so far adopted by the LHC experiments. The pseudo-observables are defined from on-shell decay...Go to contribution page
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Oleg Lebedev (University of Helsinki)08/04/2015, 10:09Planary TalkI will discuss the role of the Higgs field as a probe of the hidden sector and its implications for cosmology.Go to contribution page
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Dr Gabrijela Zaharijas (University of Nova Gorica)08/04/2015, 11:00Planary TalkThe quest to detect the non-gravitational signals from dark matter particles is now more than 50 years old and is reaching its culmination with the latest generation detectors. In this talk I will review most recent results from the so called indirect searches, which look for dark matter signals in the rich astrophysical data.Go to contribution page
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Junji HISANO (Nagoya university)08/04/2015, 11:28Planary TalkWe complete the calculation of the wino-nucleon scattering cross section up to the next-to-leading order in α_s. As a result, the uncertainties coming from the perturbative QCD are significantly reduced to be smaller than those from the nucleon matrix elements. The resultant scattering cross section is found to be larger than the leading-order one by about 70%, which is well above the...Go to contribution page
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Andrea De Simone (SISSA)08/04/2015, 11:51Planary TalkI will give an overview of the present status of dark matter searches at the LHC. I will discuss the validity of the effective field theory approach and the possible search strategies for getting the most out of the next collider run.Go to contribution page
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Joachim Kopp (University of Mainz)08/04/2015, 12:14Planary TalkWe show that the high energy events observed in the IceCube detector - usually interpreted as evidence for an astrophysical neutrino flux - could also be a signal of highly boosted dark matter particles scattering on nucleons. This scenario is for instance realized in models featuring a superheavy DM particle which decays into a much lighter dark sector species. We show that, besides...Go to contribution page
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Stefan Pokorski (University of Warsaw (PL))08/04/2015, 14:30Planary TalkMotivated by the absence, so far, of any signal for the coloured supersymmetric particles, we focus on the possibility that the electroweak sector may play the leading role in discovering supersymmetry. So far, the interest in the supersymmetric electroweak sector has often been linked to the fact that the LSP might account for the observed Dark Matter in the universe. The new LHC and...Go to contribution page
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Robert Ziegler08/04/2015, 14:53Planary TalkI will discuss a simple and predictive model that combines the NMSSM and Gauge Mediation. Originally proposed by Delgado, Giudice and Slavich, we have re-analyzed this model and found new interesting regions in the parameter space with a light singlet state that mixes with the SM-like Higgs at 125 GeV. This mixing is small enough to evade LEP and LHC constraints, but large enough to give a...Go to contribution page
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Marco Fabbrichesi (INFN/SISSA)08/04/2015, 15:16Planary TalkThe idea of naturalness, in its original version, refers only to the finite renormalisation of the Higgs boson mass induced by the introduction of heavier states. It is still a powerful heuristic principle in model building beyond the SM. A compelling case is provided by the generation of neutrino masses. The right-handed sector responsible for the seesaw mechanism is made supersymmetric to...Go to contribution page
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Amon Ilakovac (Univ. of Zagreb)08/04/2015, 15:39Planary TalkThe results for anomalous dipole moment and electric dipole moment are presented in the MSSM extended by low scale heavy neutrinos. The analysis of possible contributions is presented, and found that the CP phase originates only for additional phase introduced in the model, leading to the electron EDM that can be observed in future experiments.Go to contribution page
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Alan Schwartz (University of Cincinnati)08/04/2015, 16:30Planary TalkWe review recent results in heavy flavor decays from the Belle , BaBar, and LHCb experiments. These measurements range from mixing parameters to CKM phases to various observables in electroweak penguin decays. The results are sensitive to new physics and thus constrain exte nsions to the Stan- dard Model. Several inconsistencies between measured valu es and Standard Model...Go to contribution page
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Alexander Khodjamirian (University of Siegen)08/04/2015, 16:58Planary TalkI will present new results on the theory of the rare flavour-changing neutral-current decay $B\to \pi\ell^+\ell^-$ in the region of large recoil of the pion. Nonlocal hadronic effects in this decay are treated in a systematic way, combining QCD calculation with hadronic dispersion relation including the vector meson contributions. The effective addition to the Wilson coefficient $C_9$...Go to contribution page
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Roman Zwicky (edinburgh university)08/04/2015, 17:21Planary TalkI will discuss recent progress on B->V form factors. This will for instance include the use of the equation of motion in reducing the uncertainty of tensor-to-vector form factors. The latter is of primary importance for the zero crossing of helicity amplitudes which has major impacts on angular observables. I will discuss the impact of cc-resonances on determination of angular observables.Go to contribution page
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Sebastian Jaeger (University of Sussex (GB))08/04/2015, 17:44Planary TalkI will discuss the problems and opportunities in disentangling SM and BSM effects in rare semileptonic and radiative decays, including electronic final states and lepton universality-violating observables. I will contrast SM and BSM effects in the context of (i) the LHCb anomaly, (ii) the search for right-handed currents, and (iii) lepton-universality violation.Go to contribution page
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Dr Luca Di Luzio (Genoa University and INFN, Genoa)09/04/2015, 09:00Planary TalkI will discuss few minimal scalar extensions of the standard electroweak model that provide a simple setup for massive neutrinos in connection with an invisible axion. The presence of a chiral U(1) a la Peccei-Quinn drives the pattern of Majorana neutrino masses while providing a dynamical solution to the strong CP problem and an axion as a dark matter candidate. Such a renormalizable...Go to contribution page
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Michal Malinsky (IPNP, Charles University in Prague)09/04/2015, 09:23Planary TalkI will review the recent progress in the attempts to improve the accuracy of the existing proton lifetime estimates in the realm of the minimal non-supersymmetric SO(10) grand unified model and argue that a significant portion of its parameter space consistent with all existing constraints may be testable at the existing or near future experimental facilities.Go to contribution page
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Timon Mede (IPNP, Prague)09/04/2015, 09:46Planary TalkThe minimal renormalizable supersymmetric SU(5) GUT model has long been proclaimed ruled out on the account of colour Higgs triplet being either too heavy to allow for the gauge coupling unification or too light to satisfy the proton decay bounds. We have managed to prove that for large trilinear supersymmetry breaking terms and only a slightly heavier superpartner spectrum the perturbative...Go to contribution page
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Vasja Susič (Jožef Stefan Institute)09/04/2015, 10:09Planary TalkWe explicitly show that the model with a Higgs breaking sector 27 + 27bar + 351' + 351'bar + 78 provides a realistic scenario for an E6 SUSY Grand Unified Theory. Although the 78 is not necessary for obtaining a Standard Model vacuum, doublet-triplet splitting cannot be performed in the simplified case, where the 78 is omitted. We study in detail the Yukawa sector of the model, where three...Go to contribution page
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Dr Fabrizio Nesti (Rudjer Boskovic Institute)09/04/2015, 11:00Planary TalkI describe the way in which the mechanism responsible for the origin of neutrino masses may manifest itself as striking Lepton Number Violating decays of the Higgs. Majorana neutrinos in the tenths of GeV mass range, together with currently allowed nonstandard Higgs couplings leave ample space for this possibility, which can probe a scale of neutrino mass generation as high as ~20 TeV.Go to contribution page
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Andreas Weiler (CERN)09/04/2015, 11:23Planary Talk
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Roberto Franceschini (CERN)09/04/2015, 11:46Planary TalkIn this talk I will briefly review the present status and motivations for an accurate measurement of the top quark mass. In particular I will outline future strategies and possible outcomes for a global combination of top quark masses measurement at hadron colliders. I will discuss the role that new types of measurement can play to clarify the issues of present precision top quark...Go to contribution page
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Sacha Davidson (Universite Claude Bernard-Lyon I (FR))09/04/2015, 12:09At the LHC, New Physics could be better parametrised with form factors than with contact interactions, if the New Physics scale is similar to the LHC energy. As a toy example, I consider the process pp -> l+l- , fit the high-energy tail to a function, and show that the resulting limits can be analytically translated to a wide variety of models (no event simulation required).Go to contribution page
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Wolfgang Altmannshofer (Perimeter Institute)09/04/2015, 14:30Planary TalkI will present results of global fits of all relevant experimental data on rare b-->s decays. Significant tensions between the Standard Model predictions and the data are observed that could be explained by unexpectedly large hadronic effects or by new physics. Assuming hadronic uncertainties are estimated in a sufficiently conservative way, I will discuss the implications of the experimental...Go to contribution page
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Gudrun Hiller (Technische Universitaet Dortmund (DE))09/04/2015, 14:53Planary TalkLepton-nonuniversality in rare b decays provides opportunities to diagnose BSM physics at the weak scale. We discuss correlations and give directions for flavor patterns in model-specific realizations with leptoquarks.Go to contribution page
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Marco Nardecchia09/04/2015, 15:16Planary TalkI will discuss the possibility to explain recent anomalies in semileptonic B decays at LHCb via a composite Higgs model, in which both the Higgs and a triplet leptoquark arise as pseudo-Goldstone bosons of the strong dynamics. Fermion masses are assumed to be generated via the mechanism of partial compositeness, which largely determines the leptoquark couplings and implies non-universal lepton...Go to contribution page
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Avelino Vicente (Université de Liège)09/04/2015, 15:39Planary TalkThe LHCb collaboration has recently reported on some anomalies in $b \to s$ transitions. In addition to discrepancies with the Standard Model (SM) predictions in some angular observables and branching ratios, an intriguing hint for lepton universality violation was found. Here we propose a simple model that extends the SM with a dark sector charged under an additional $U(1)$ gauge...Go to contribution page
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Werner Rodejohann (MPIK, Heidelberg)09/04/2015, 16:30Planary TalkPhysics implications of neutrinoless double beta decay are summarized. Both the standard approach of light neutrino exchange as well as non-standard interpretations in terms of TeV scale physics will be discussed. Tests of the mechanisms at colliders and with lepton flavor violation are presented. It is pointed out that left-right symmetric mechanisms can have testable consequences also in...Go to contribution page
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Prof. Ivica Picek (University in Zagreb)09/04/2015, 16:53Planary TalkWe propose a three-loop radiative neutrino (R\nu) mass model realized with BSM fields, including minimal-dark-matter (MDM) candidates. These, in conjunction with the 2HDM fields on top of which the model is built, lead to an accidental Z_2 symmetry protecting the fermion quintuplet as a DM candidate. We assess the potential fingerprints of the Majorana quintuplet on present and future pp colliders.Go to contribution page
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Diego Aristizabal (Universite de Liege)09/04/2015, 17:16Planary TalkMajorana neutrino masses can originate either at the tree level (type-I, II or III seesaws) or can be radiatively induced. The latter option naturally requires order TeV BSM fields, thus leading to testable neutrino mass generation mechanisms. Based on a two-loop systematic classification of the dimension five effective Weinberg operator, in this talk I will discuss the different...Go to contribution page
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Benoit Schmauch (IPhT)09/04/2015, 17:39Planary TalkLeptogenesis is an appealing framework to explain the baryon asymmetry of the universe. In its standard realization involving right-handed neutrinos, it has been shown that, if right-handed neutrinos are hierarchical, the flavour structure of Boltzmann equations describing the evolution of the lepton asymmetry simplifies a lot. When the charged lepton Yukawa are negligible, that is when the...Go to contribution page
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Martin Jung (TU Dortmund)10/04/2015, 09:00Planary TalkWe investigate the constraints on Two-Higgs-Doublet Models stemming from precision measurements of tree-level decays. We focus on leptonic and semileptonic meson decays, but also consider bounds from recent searches at ATLAS and CMS.Go to contribution page
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Ivan Nisandzic (TU Dortumd)10/04/2015, 09:23Planary TalkCurrent experimental information on the charm meson decay observables in which the $c\to s\ell\nu_\ell$ transitions occur is well compatible with the Standard Model (SM) predictions. Recent precise lattice calculations of the $D_s$ meson decay constant and form factors in $D \to K \ell\nu$ decays offer a possibility to search for the small deviations from the SM predictions in the next...Go to contribution page
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Alexey Petrov (Wayne State University)10/04/2015, 09:46Planary TalkLepton flavor-violating processes offer interesting possibilities to probe new physics at multi-TeV scale. We discuss those in the framework of effective field theory, emphasizing the role of gluonic operators. Those operators are obtained by integrating out heavy quarks that are kinematically inaccessible at the scale where low-energy experiments take place and make those experiments...Go to contribution page
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Ulrich Nierste (Karlsruhe Institute of Technology (KIT))10/04/2015, 10:09Planary TalkThe standard way to measure the CP phases $2\beta$ and $2\beta_s$ uses $B_{d,s}$ decays into charmonium. The theoretical precision is limited by the unknown penguin contribution to the decay amplitude. I show that this contribution can be expressed in terms of the same matrix elements which constitute to the dominant tree amplitude. The second part of my talk addresses a global analysis of D...Go to contribution page
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Christopher Smith (L)10/04/2015, 11:00Planary TalkSeveral aspects of the MFV implementation in the presence of global U(1) flavor symmetries will be discussed. Some generic implications for baryon number violation, lepton number violation and Majorana mass terms, and axion dynamics will be drawn.Go to contribution page
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Jan O. Eeg (University of Oslo)10/04/2015, 11:23Planary TalkI comment shortly on various mechanisms for electric dipole moments. I also comment on recent calculations of two loop diagrams for electric dipole moments generated by flavor changing scalars.Go to contribution page
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Pietro Colangelo (Unknown)10/04/2015, 11:46Planary TalkRare b decays are investigated in the Randall Sundrum model with custodial symmetry. Correlations among the observables are studied, and predictions for unobserved modes are presented.Go to contribution page
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Andrzej Buras (Munich)10/04/2015, 12:09Planary TalkI will report on recent analyses of rare K and B decays done at TUM-IAS which with improved data should provide in this decade some insight into the dynamics at the LHC scales and beyond them.Go to contribution page
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