Antonio Marrone
(Univ. of Bari)
23/07/2015, 09:00
Neutrino Physics
talk
We review the status of the neutrino oscillation parameters,
as determined from a global analysis of all available neutrino
data, in a the standard three-neutrino mass-mixing framework.
We analyse the correlations between the oscillation parameters
and we discuss the current status and the prospects for a near
future determination of the neutrino mass hierarchy and of the
CP-violating...
Dr
Emmanuel Chauveau
(RCNS Tohoku University)
23/07/2015, 09:15
Neutrino Physics
talk
Double Chooz aims to measure the last neutrino mixing angle theta13 with a 10 % precision through the disappearance of reactor electronic anti-neutrinos. The experiment relies on the measurement of neutrino flux and spectrum with two identical detectors at different location: one at 1 km of reactor cores to observe the disappearance of neutrinos around the first minimum, and one around 400 m...
Xiangpan Ji
(Tsinghua University)
23/07/2015, 09:30
Neutrino Physics
talk
Precise determination of the neutrino mixing angle $\theta_{13}$ is important for searches of CP violation in the lepton sector. The Daya Bay Reactor Neutrino Experiment (Daya Bay) observed electron antineutrino disappearance and measured a nonzero value of $\theta_{13}$ with a significance greater than 5 standard deviations in early 2012. With the final two detectors installed, Daya Bay...
Seon-Hee Seo
(Seoul National University)
23/07/2015, 09:45
Neutrino Physics
talk
RENO has been taking reactor neutrino data to measure neutrino mixing angle theta_13
since Aug. 2011 using two identical detectors located in Near and Far sites in Yonggwang, Korea. The data taking has gone smoothly to collect data more than 1 M (0.1 M) neutrino events in the Near (Far) detector as of May 2015. Currently we are at the stage of finalizing our new results based on spectral...
Melody Ravonel
(Universite de Geneve (CH))
23/07/2015, 10:00
Neutrino Physics
talk
T2K is a long-baseline neutrino oscillation experiment, in which a muon neutrino beam is produced at J-PARC and detected 295 km away at the Super-Kamiokande detector. The T2K experiment observed electron-neutrino appearance in 2012. This observation enables T2K to explore CP violation in the lepton sector by comparing electron-neutrino appearance and electron-antineutrino appearance. Indeed,...
Gabriele Sirri
(Universita e INFN, Bologna (IT))
23/07/2015, 10:22
Neutrino Physics
talk
The OPERA experiment at the Gran Sasso underground laboratory has been
designed to study the nu_mu -> nu_tau oscillation in appearance mode in the
CNGS neutrino beam. Four nu_tau candidate events have been confirmed 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 have
been established...
Alec Habig
(University of Minnesota)
23/07/2015, 10:45
Neutrino Physics
talk
NOvA is an off-axis long-baseline neutrino experiment, looking for $\nu_e$ appearance in an upgraded NuMI beam of $\nu_\mu$ to precisely measure the recently discovered $\theta_{13}$ acting in subdominant $\nu_\mu\rightarrow\nu_e$ transitions. As an appearance experiment, NOvA might also be sensitive to CP-violating $\delta$ and the neutrino mass hierarchy. To maximize sensitivity to the...
Marco Martini
(University of Ghent)
23/07/2015, 11:30
Neutrino Physics
talk
In the present and future accelerator-based neutrino oscillation experiments nuclear targets (such as C, O, Ar and Fe) are involved. Hence the knowledge of neutrino-nucleus scattering is very important. In particular it is crucial for the determination of the neutrino energy which enters the expression of the oscillation probability, since this energy is reconstructed from the final states of...
Laura Amelie Zambelli
(High Energy Accelerator Research Organization (JP))
23/07/2015, 11:45
Neutrino Physics
talk
Since 2014, the T2K long-baseline neutrino oscillation experiment in Japan has been running with reversed horn current to produce a beam enhanced in muon antineutrinos. Near detectors located 280 meters from the target study the neutrino interactions prior to the onset of neutrino oscillations. By selecting muon (anti)-neutrino charged current interactions in various channels of pion...
Sandro Bravar
(Universite de Geneve (CH))
23/07/2015, 12:00
Neutrino Physics
talk
MINERvA (Main INjector ExpeRiment v-A) is a neutrino scattering experiment using the high intensity neutrino beam produced by the Main Injector (NuMI) at Fermilab. MINERvA is making precision cross-section measurements of neutrino interactions with various nuclear targets (C, CH, Fe, Pb) at low and medium energy to study nuclear medium effects with a weak probe.
This talk will present...
Alexander Korzenev
(Universite de Geneve (CH))
23/07/2015, 12:15
Neutrino Physics
talk
A precise prediction of the expected neutrino flux is required for a long-baseline accelerator neutrino experiment. The flux is used to measure neutrino cross sections at the near detector, while at the far detector it provides an estimate of the expected signal for the study of neutrino oscillations. Review of recent results of the NA61/SHINE experiment on determination of charged hadron...
Dr
Davide Meloni
(Dipartimento Matematica e Fisica, Universita' Roma Tre)
23/07/2015, 12:30
Neutrino Physics
talk
In this talk I will briefly discuss the present status of models of neutrino mixing, in particular comparing the virtues of Bimaximal Mixing,
corrected by terms arising from the charged lepton mass diagonalization
in SU(5) and SO(10) contexts, to models based on chance, like Anarchy or U(1)_FN.
Prof.
Sankagiri Umasankar
(Indian Institute of Technology Bombay)
23/07/2015, 12:45
Neutrino Physics
talk
We consider a neutrino mass model based on $A_4$ symmetry.
The spontaneous symmetry breaking in this model is chosen to obtain
tribimaximal mixing in the neutrino sector. We introduce $Z_2 \times Z_2$
invariant perturbations in this model which can give rise to acceptable
values of $\theta_{13}$ and $\delta_{CP}$. Perturbation in the charged
lepton sector alone can lead to viable values...
Carlo Giunti
(INFN - National Institute for Nuclear Physics)
23/07/2015, 14:30
Neutrino Physics
talk
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. I present arguments in favor of 3+1
neutrino mixing with one sterile neutrino at the eV scale. I discuss
the implications for neutrinoless double-beta...
Luca Stanco
(Universita e INFN, Padova (IT))
23/07/2015, 14:45
Neutrino Physics
talk
The OPERA experiment has observed muon neutrino to tau neutrino oscillations in the atmospheric sector. Based on this result new limits on the mixing parameters of a massive sterile neutrino have been set. In this talk the analysis performed in the 3+1 neutrino model is presented. The status of the searches for sterile neutrinos performed on LBL experiments is also recalled and...
Pablo del Amo Sanchez
(LAPP-IN2P3-CNRS / Universitรฉ Savoie Mont Blanc)
23/07/2015, 15:00
Neutrino Physics
talk
Interest in light sterile neutrinos has been recently revived by the
so-called Gallium and reactor neutrino anomalies. In both of them, a
deficit of detected neutrinos was observed with respect to the
expectations. Both anomalies could be explained by the oscillations
of a sterile neutrino introducing an additional $\Delta m^2$ around 1 eV$^2$.
Such oscillations should cause a tell-tale...
Nick Ryder
(University of Oxford (GB))
23/07/2015, 15:15
Neutrino Physics
talk
The SoLid experiment intends to search for active-to-sterile anti-neutrino oscillation at very short baseline of the SCKโขCEN BR2 research reactor and provide a precise measurement of a high enriched Uranium core, a key ingredient in the calculation of reactor antineutrino flux. It utilises a novel approach to anti-neutrino detection based on a highly segmented detector design. High...
Dr
Matteo Agostini
(Technische Universitรคt Mรผnchen & Gran Sasso Science Institute)
23/07/2015, 15:30
Neutrino Physics
talk
The Borexino detector has convincingly shown its outstanding performances in the low energy regime through its accomplishments in the solar and geo neutrinos detection. These performances make it the ideal tool to accomplish a state-of-the-art, source based experiment able to test the long-standing issue of the existence of a sterile neutrino, as suggested by the several anomalous results...
Dmitry Gorbunov
(Institute for Nuclear Research of the Russian Academy of Sciences / Moscow Institute of Physics and Technology),
Dmitry Gorbunov
(Russian Academy of Sciences (RU))
23/07/2015, 15:45
Neutrino Physics
talk
Supplemented with three right-handed sterile neutrinos the Standard Model can explain neutrino oscillations (active neutrino masses via seesaw type-I mechanism), baryon asymmetry of the Universe (via leptogenesis by sterile-active neutrino oscillations in the primordial plasma) and dark matter phenomenon (by a population of the lightest sufficiently long-lived sterile neutrino). This seems to...
Marco Drewes
(Technische Universitaet Muenchen (DE))
23/07/2015, 16:30
Neutrino Physics
talk
Neutrinos are the only particles in the Standard Model of particle physics that have only been observed with left handed chirality to date. If right handed neutrinos exist, they would not only explain the observed neutrino oscillations, but could also be responsible for several phenomena in cosmology, including the baryon asymmetry of the universe, dark matter and dark radiation. A crucial...
Sergio Grancagnolo
(Humboldt-Universitaet zu Berlin (DE))
23/07/2015, 16:45
Neutrino Physics
talk
Leptoquarks are hypothetical particles predicted by extensions of the Standard Model, providing an explanation for the similarity between the quark and lepton sectors. Pair-produced scalar leptoquarks have been searched for using final states including leptons and jets. Similar final states are predicted in decays of heavy leptons/neutrinos including Type III neutral/charged leptons as well as...
Valentina De Romeri
(CNRS)
23/07/2015, 17:00
Neutrino Physics
talk
A future high-luminosity Z-factory will offer the possibility to study rare Z decays, as those leading to lepton flavour violating final states. Processes such as Z โ lโ1 lยฑ2 are potentially complementary to low-energy (high-intensity) observables of lepton flavour violation. We address the impact of new sterile fermions on lepton flavour violating Z decays, focusing on potential searches at...
Mr
Josu Hernandez
(IFT-CSIC)
23/07/2015, 17:15
Neutrino Physics
talk
We extend the Standard Model with 3 right-handed neutrinos with an approximate lepton number symmetry, which leads to sizable neutrino mixing while generating the neutrino masses and PMNS matrix measured in oscillation experiments.
Constraints on the right-handed neutrino mixing are derived through a global fit to electroweak precision observables. We analyze explicitly the impact of...
Diego ARISTIZABAL
(Universite de Liege)
23/07/2015, 17:30
Neutrino Physics
talk
Majorana 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 -in principle- 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...
Dr
Maximiliano Rivera
(Universidad Tecnica Federico Santa Maria)
23/07/2015, 17:45
Neutrino Physics
talk
We discuss some extensions of the Standard Model of particle physics that naturally generate small neutrino masses and provide a dark matter candidate. The symmetry that stabilizes the dark matter suppresses neutrino masses to appear first at higher order in perturbation theory (e.g. 2 or 3-loops). Without the need of very heavy new fields or right-handed neutrinos. In the talk we will...
Dr
Matteo Agostini
(Technische Universitรคt Mรผnchen & Gran Sasso Science Institute)
24/07/2015, 09:00
Neutrino Physics
talk
The GERDA experiment searches for the neutrinoless double-beta decay of Ge-76 by operating an array of Ge detectors directly in liquid argon. After a first successful phase of data taking (Phase I), the apparatus is currently being upgraded to double the target mass (up to 38 kg) and to further reduce the background index (<0.001 cts/keV/kg/yr). Results from the on-going hardware...
Dr
Alberto Remoto
(LAPP)
24/07/2015, 09:15
Neutrino Physics
talk
SuperNEMO is a next generation neutrinoless double beta decay experiment with a design capability to reach a half-life sensitivity of 1026 years corresponding to an effective Majorana neutrino mass of โจmฮฒฮฒโฉ < 50 - 100 meV. This detector has the unique capability to identify the electrons allowing to reduce drastically the background coming from the natural radioactivity. It measures also all...
Francesco Terranova
(Universita & INFN, Milano-Bicocca (IT))
24/07/2015, 09:30
Neutrino Physics
talk
CUORE (Cryogenic Underground Observatory for Rare Events) is a ton-scale experiment aimed at searching for neutrinoless double beta decay in $^{130}$Te with tellurium oxide bolometers, with a projected sensitivity close to the inverted mass hierarchy region. The CUORE detector design and background budget have been validated by CUORE-0: an array of 52 TeO$_2$ bolometers built using the same...
Fedor Simkovic
(Comenius University)
24/07/2015, 09:45
Neutrino Physics
talk
The recent progress in theoretical description of the neutrinoless double beta decay (0ฮฝฮฒฮฒโdecay) is briefly reviewed. A possible effect of nuclear medium on exchange of three light neutrinos is addressed. It is shown that non-standard neutrino interaction generates in-medium Majorana neutrino masses, which influences the 0ฮฝฮฒฮฒ-decay rate.
Nuclear physics is important for extracting useful...
Pau Novella
(IFIC)
24/07/2015, 10:15
Neutrino Physics
talk
Although different techniques are used to search for the neutrinoless double beta decay, the common challenges for all the existing or planned experiments are to achieve a good energy resolution and large background rejection factors. The NEXT collaboration addresses these two challenges with a high-pressure gas-Xenon electroluminescent TPC, where the isotope 1 36Xe is used as both the source...
Gersende Prior
(LIP)
24/07/2015, 10:30
Neutrino Physics
talk
The SNO+ experiment has multiple physics goals among which the search for neutrinoless double-beta decay, the study of solar neutrinos, measurements of anti-neutrinos from nuclear reactors and the Earth's natural radioactivity, as well as the ability to detect Supernovae neutrinos. Located in the SNOLAB underground physics laboratory (Canada) it will re-use the SNO detector equipped with ~9000...
Julia Harz
(University College London)
24/07/2015, 10:45
Neutrino Physics
talk
Interactions that manifest themselves as lepton number violating processes at low energies in combination with sphaleron transitions typically erase any pre-existing baryon asymmetry of the Universe. We demonstrate in a model independent approach that the observation of neutrinoless double beta decay would impose a stringent constraint on mechanisms of high-scale baryogenesis, including...
Florian Fraenkle
(Karlsruhe Institute of Technology)
24/07/2015, 11:30
Neutrino Physics
talk
A model independent, direct way to measure the neutrino masses is the investigation of the kinematics of single $\beta$-decay via a precise measurement of the $\beta$-decay electron energy spectrum close to the endpoint. This talk will present the current status of two experiments intending to use this method by measuring the $\beta$-spectrum of tritium.
The KArlsruhe TRItium Neutrino...
Stephan Scholl
(Eberhard Karls Universitaet Tuebingen)
24/07/2015, 11:45
Neutrino Physics
talk
The Electron Capture in 163Ho experiment, ECHo, is designed to investigate the electron neutrino mass in the sub-eV range by means of the analysis of the calorimetrically measured spectrum following the electron capture in 163Ho. Arrays of low temperature metallic magnetic calorimeters (MMCs), read-out using microwave SQUID multiplexing, will be used in this experiment. With a first MMC...
Werner Maneschg
(MPI)
24/07/2015, 12:00
Neutrino Physics
talk
The Borexino experiment is running at the Laboratori del Gran Sasso in Italy since 2007. Its technical distinctive feature is the unprecedented ultralow background of the inner scintillating core, which is the basis of the outstanding achievements accumulated by the experiment.
In this talk, after recalling the main features of the detector, the impressive solar and geo-neutrino data gathered...
Dr
Sushant Raut
(KTH Royal Institute of Technology)
24/07/2015, 12:15
Neutrino Physics
talk
Standard neutrino oscillation physics has entered the era of
precision measurements. With a large value of $\theta_{13}$ having
been measured, the remaining unknowns yet to be determined are the
mass hierarchy, CP violation and the octant of $\theta_{23}$.
The main problem in determining these parameters is the problem
of parameter degeneracy.
T2K, NOvA, SK, IceCube and the reactor...
Alec Habig
24/07/2015, 12:30
Neutrino Physics
talk
A new International Team (DUNE - Deep Underground Neutrino Experiment) has been formed to pursue an accelerator-based long-baseline neutrino experiment, as well as neutrino astrophysics and nucleon decay, with an approximately 40-kt (fiducial) modular liquid argon TPC (LAr-TPC) detector located deep underground and a high-resolution near detector. Several independent worldwide efforts,...
Linda Cremonesi
(Queen Mary University of London)
24/07/2015, 12:45
Neutrino Physics
talk
Hyper-Kamiokande (HK) is a megaton scale water Cherenkov detector proposed to be built in Japan. HK is the logical continuation of the highly successful program of neutrino physics and proton decay searches using a water Cherenkov technique. HK will study the CP asymmetry in neutrino oscillations using the neutrino and anti-neutrino beams produced at J-PARC. With an exposure of 7.5 MW x 10^7...
Vyacheslav Galymov
(Universite Claude Bernard-Lyon I (FR))
24/07/2015, 14:30
Neutrino Physics
talk
A giant (10-50 kt) liquid argon TPC has been proposed as the detector for an underground observatory for the study of neutrino oscillations, neutrino astrophysics and proton decay.
This detector has excellent tracking and calorimetric capabilities much superior to currently operating neutrino detectors.
LBNO-DEMO (WA105) is a large demonstrator of the double phase liquid argon TPC based...
Maurizio Bonesini
(Sezione INFN, Dipartimento di Fisica G. Occhialini, Universita' Milano-Bicocca)
24/07/2015, 14:45
Neutrino Physics
talk
The detection of vacuum ultraviolet (VUV) radiation emitted by ionizing particles in large liquid Argon (LAr) or Xenon Time Projection chambers (TPCs ) is of key relevance in experimental neutrino or dark matter search. Typical schemes use photodetectors coated with down-conversion dyes, such as tetraphenyl butadiene (TPB). The development of large-area waveguides based on TPB is, however,...
Mr
Arsenii Titov
(SISSA/INFN)
24/07/2015, 15:00
Neutrino Physics
talk
Establishing the status of the CP symmetry in the lepton sector is one of the major goals of the programme of future research in neutrino physics. In the reference 3-neutrino mixing scheme CP-violating effects in neutrino oscillations can be caused by the Dirac CP violation phase $\delta$ present in the $3\times3$ unitary neutrino mixing matrix $U$. Using the fact that $U = U_e^\dagger U_\nu$,...
Prof.
Emilio Ciuffoli
(IMP, CAS)
24/07/2015, 15:15
Neutrino Physics
talk
The determination of the value of ฮธ13, which turned out to be considerably larger than the expected, opened the way to the measurement of the CP violating phase ฮด in the leptonic sector. We consider the following experimental setup: a 800MeV proton beam hits a target at a single site, creating ฮผ antineutrinos via ฮผ decay at rest; the electron antineutrinos produced by oscillations interact...
Eric Baussan
(Institut Pluridisciplinaire Hubert Curien (FR))
24/07/2015, 15:30
Neutrino Physics
talk
For the lepton CP violation discovery very intense neutrino beams are needed produced using very powerful proton beams. The proposed project, ESSnuSB, is based on the European Spallation Source proton linac the construction of which started in 2014 and will finish by 2023. This linac will have a power of 5 MW producing protons of 2 GeV energy. The combination of the high beam intensity and the...
Dr
Sushant Raut
(KTH Royal Institute of Technology)
24/07/2015, 15:45
Neutrino Physics
talk
Non-standard interactions (NSI) of neutrinos arise in various models of physics beyond the Standard Model. These interactions affect the oscillations of neutrinos and can therefore be probed by long-baseline experiments. In this work, we study the possibility of probing NSI at the source and detector using the proposed superbeam experiment at the ESS facility (ESSnuSB).
ESSnuSB has been...
Alessandra Tonazzo
(APC)
24/07/2015, 16:30
Neutrino Physics
talk
The neutrino community has been debating on how to assess the potential of future oscillation experiments for determining the neutrino Mass Hierarchy and for establishing CP violation in the leptonic sector. A review of some basic concepts and of the approach chosen by different projects to present their results will be shown. The key issues relevant for the future will be discussed.
Prof.
Wei Wang
(Sun Yat-Sen University)
24/07/2015, 16:45
Neutrino Physics
talk
The Jiangmen Underground Neutrino Observatory (JUNO) is a multipurpose neutrino experiment aiming to determine the neutrino mass hierarchy and precisely measure the neutrino oscillation parameters by detecting reactor antineutrinos at ~53 km baselines using a 20-kiloton liquid scintillator detector placed at 1800-m.w.e deep underground. JUNO is also capable of observing supernova neutrinos,...
Thomas Ehrhardt
(Uni Mainz)
24/07/2015, 17:00
Neutrino Physics
talk
The world's largest neutrino telescope, the IceCube Neutrino Observatory, is built in one of the planetโs most extreme environments at South Pole Station Antarctica. Completed in 2010, and instrumenting moreย than a cubic-kilometre of ice, IceCube has been designed to measure the flux of astrophysical neutrinos it recently discovered. It also comprises a low-energy detector array, called...
Dr
Thierry PRADIER
(IPHC)
24/07/2015, 17:15
Neutrino Physics
talk
Since the measurement of the mixing angle theta_13, the determination of the neutrino
mass hierarchy (normal vs. inverted) has become one of the central challenges of neutrino
physics, together with the search for CP violation in the leptonic sector. Recent studies
have pointed out that the neutrino mass hierarchy can be investigated in the atmospheric
neutrino sector, in the energy...
Alan Bross
(Fermilab)
24/07/2015, 17:30
Neutrino Physics
talk
This talk reviews the current status of the neutrinos from STORed Muons
(nuSTORM) facility. The basic idea for nuSTORM (the production of
neutrino beams from the decay of muons in a racetrack-like decay ring)
was discussed in the literature over 30 years ago in the context of
searching for non-interacting ("sterile") neutrinos. However, it was
only in the past five years that the concept...
Giovanni De Lellis
(Universita e INFN, Napoli (IT))
24/07/2015, 17:45
Neutrino Physics
talk
SHIP is a new general purpose fixed target facility, whose Technical Proposal has been recently submitted to the CERN SPS Committee. In its initial phase, the 400GeV proton beam extracted from the SPS will be dumped on a heavy target with the aim of integrating $2\times 10^{20}$ pot in 5 years. A dedicated detector downstream the target will allow to probe a variety of models with light...
