XXXI INTERNATIONAL WORKSHOP ``Neutrino physics at accelerators'', Dubna, January 27-29, 2009

Dzhelepov Laboratory of Nuclear Problems,
Joint Institute for Nuclear Research,
141980 Dubna, Moscow Region
Telephone: +7 (49621) 65880, +7 (49621) 67583; Fax: +7 (49621) 66666;
E-mail: bunyatov@jinr.ru
E-mail: popov@cv.jinr.dubna.su
E-mail: anna@jinr.ru
http://nuweb.jinr.ru/~nd/workshop2009/



XXXI INTERNATIONAL WORKSHOP ``Neutrino physics at accelerators'', DLNP, JINR, Dubna, January 27-29, 2009



Scientific Program

January 27 / Conference Room in the Building 3 of DLNP
10:00 Opening and Welcome Address
    Stepan A. Bunyatov (JINR)
duration / discussion Session 1
NOMAD experiment

00:40 / 00:05 Vladimir Lyubushkin (JINR)
Final results on the study of quasi-elastic neutrino and antineutrino interactions in the NOMAD experiment
00:20 COFFEE BREAK
Session 2
Theory

00:60 / 00:05 Anatoly Butkevich (INR)
Nuclear effects and reconstruction of neutrino CCQE scattering cross sections on nucleus
00:30 / 00:05 Sergey Alekhin (IHEP)
Determination of strange sea distribution from neutrino-nucleon DIS
Abstract
We present an analysis of the nucleon strange sea extracted from a global Parton Distribution Function fit including the neutrino and anti- neutrino dimuon data by the CCFR and NuTeV collaborations, the inclusive charged lepton-nucleon Deep Inelastic Scattering and Drell-Yan data. The (anti-)neutrino induced dimuon analysis is constrained by the semi- leptonic charmed-hadron branching ratio $B_\mu=(8.8\pm0.5)\%$, determined from the inclusive charmed hadron measurements performed by the FNAL-E531 and CHORUS neutrino emulsion experiments. Our analysis yields a strange sea suppression factor $\kappa(Q^2=20~{\rm GeV}^2)=0.62 \pm 0.04$, the most precise value available, an $x$-distribution of total strange sea that is slightly softer than the non-strange sea, and an asymmetry between strange and anti-strange quark distributions consistent with zero (integrated over $x$ it is equal to $0.0013 \pm 0.0009$ at $Q^2=20~{\rm GeV}^2$). A predictions for the differential cross sections of the dimuon production in the $\nu Fe$ collisions are calculated for the NOMAD energy spectra.
01:40 LUNCH BREAK
Session 3
OPERA experiment

00:40 / 00:05 Yuri Gornushkin (JINR)
Status of the OPERA experiment.
00:20 COFFEE BREAK
00:30 / 00:05 Sergey Dmitrievsky (JINR)
Pattern recognition for the tracking in the OPERA experiment
00:20 / 00:05 Svetlana Zemskova (JINR)
About a possibility to study double beta decay with the help of nuclear emulsions
Session 4
Theory

00:40 / 00:05 Gennady Lykasov (JINR)
Neutrino interactions with nuclear matter at low energies and with nucleons at high energies
Session 5
Hadroproduction experiments

00:30 / 00:05 Anatoly Vovenko (IHEP)
Preliminary results of the re-analysis of hadron production in interactions of 67 GeV/c protons with nuclear targets
January 28 / Conference Room in the Building 3 of DLNP
Session 6
NA61 experiment

00:40 / 00:05 Boris Popov (JINR)
The NA61 (SHINE) experiment at CERN - hadron production measurements for T2K
00:30 / 00:05 Claudia Strabel (ETH, Zurich)
Cross section normalization in NA61
00:30 / 00:05 Magdalena Posiadala (University of Warsaw)
Particle identification by energy loss measurements in NA61
00:30 / 00:05 Sebastien Murphy (University of Geneva)
ToF particle identification in the NA61 (SHINE) experiment
00:20 COFFEE BREAK
00:20 / 00:05 Boris Popov (JINR)
Status of the NA61 software and productions
00:30 / 00:05 Alexander Sadovsky (INR)
Quality Assessment for the NA61 (SHINE) experiment
00:20 / 00:05 Vladimir Lyubushkin (JINR)
NA61 software portability
01:40 LUNCH BREAK
duration / discussion Session 7
T2K experiment

00:40 / 00:05 Yuri Kudenko (INR)
Status of the T2K long baseline neutrino oscillation experiment
00:20 COFFEE BREAK
00:30 / 00:05 Nicolas Abgrall (University of Geneva)
Impact of NA61 data on T2K experiment
Session 8
Non-accelerator experiments

00:40 / 00:05 Oleg Smirnov (JINR)
Real time detection of Be-7 solar neutrinos by Borexino
Abstract
Borexino is a first real-time detector sensitive to low-energy solar neutrinos. The main goal of the experiment is the measurement of the flux of monoenergetic neutrinos originating from the capture of electrons on Be-7 in the sun's core with a precision of at least 5%. Due to the very low level of natural radioactivity achieved in Borexino, collaboration succeded to detect for the first time the solar neutrinos in sub-MeV region. Unique properties of the detector make it an appropriate tool to address other topics in neutrino physics and astrophysics. The status of the Borexino experiment after one year of the data taking and perspectives for the near future are presented.
January 29 / Conference Room in the Building 3 of DLNP
Session 9
General discussion