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Study
of Rare Charged Kaon Decays and Search for Dark Sector
in
Experiments at the CERN SPS
Theme
leader:
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V.D. Kekelidze
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Deputies:
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D.V.
Peshekhonov
D.T. Madigozhin
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Participating
countries and international organizations:
Belarus,
Belgium, Bulgaria, Canada, CERN, Chile, Czech Republic, France,
Germany, Italy, Kazakhstan, Mexico, Romania, Russia, Slovakia,
Switzerland, United Kingdom, USA.
The
problem under study and the main purpose of the research:
Search
for and study of rare kaon decays and CP violation processes. Search
for rare events using beam-dump and missing energy techniques with
CERN SPS secondary beams. Search for phenomena beyond the Standard
Model. Construction and maintenance of detectors.
Projects
in the theme:
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Name
of the project
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Project
Leaders
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Project
code
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1
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NA62
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V.D.
Kekelidze
Deputy:
D.T.
Madigozhin
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02-1-1096-1-2010/2024
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2.
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NA64
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V.А.
Matveev
D.V. Peshekhonov
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02-1-1096-2-2017/2026
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Projects:
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Name
of the project
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Project
Leaders
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Status
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Laboratory
(Subdivision)
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Responsible
from
laboratories
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1.
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NA62
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V.D.
Kekelidze
Deputy:
D.T. Madigozhin
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Data
taking
Data analysis
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VBLHEP
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A.N.
Baeva, D. Baigarashev, V.V. Bautin, A.A. Belkova,
D.D.
Emelyanov, T.L. Enik, V.P. Falaleev, S.R. Gevorgyan,
V.N.
Gorbunova, E.A. Gudzovsky, I. Kambar, D. Kereibay,
A.M.
Korotkova, M. Misheva, N.A. Molokanova, I.A. Polenkevich, K.M.
Salamatin, S.N. Shkarovsky
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Brief
annotation and scientific rationale:
Realization
of the NA62 Project allows to clarify the CP-violation problem, to
measure precisely very rare charged kaon decay to charged pions
and two neutrinos, to carry out a search for supersymmetric
particles and their partners to observe physics beyond the
Standard Model. In addition, the characteristics of rare kaon and
hyperon decays will be improved. Straw-detectors of the NA62
high resolution magnetic spectrometer working in vacuum will be
supported during experimental runs. Development of a new detector
prototype based on straws with a smaller diameter will be started
to use it at higher intensity of the beams. Software for
simulation, data analysis and processing will be developed.
Expected
results upon completion of the project:
Measurement
of the rare decay of a charged kaon into a pion and two neutrinos
with an accuracy of about 10%, which will make it possible to
refine the parameters of the Cabibbo-Kobayashi-Maskawa matrix and
will be a decisive test of the Standard Model. In addition,
the probabilities and other parameters of a number of rare decays
of charged kaons will be measured, which will make it possible to
refine the parameters of the Chiral Perturbation Theory, which
describes strong interactions at low energies.
Expected
results of the project in the current year:
1.
NA62 and NA48/2 data analysis will be carried out. Two
articles will be published in peer-reviewed journals with decisive
participation of JINR staff in data analysis.
2.
Software for the simulation of the magnetic spectrometer and full
set-up will be developed; system for detector calibration and
event reconstruction will be upgraded; general software of the
experiment will be developed.
3. Participation
in the maintenance of the NA62 spectrometer, as well as in the
development and maintenance of the control system for all
detectors of the experiment.
4. Participation
in the development of a straw detector for high intensity
beams.
5.
Participation in the NA62 experimental run at the CERN SPS.
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2.
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NA64
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V.A.
Matveev
D.V. Peshekhonov
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Preparation
Data
taking
Data analysis
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VBLHEP
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T.L.
Enik, S.V. Gertsenberger, I. Kambar, G.D. Kekelidze,
E.A.
Kasianova, V.A. Kramarenko, V.M. Lysan, K.M. Salamatin,
E.V.
Vasilieva, P.V. Volkov, I.A. Zhukov
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DLNP
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V.N.
Frolov
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BLTP
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A.S.
Zhevlakov
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Brief
annotation and scientific rationale:
The
main objective of the NA64 experiment is to search for new physics
beyond the SM, namely the search for the dark photon (A'),
hypotetical boson with 16.7 MeV mass and other manifestations of
the dark sector in the experiments on the CERN SPS electron and
muon secondary beams. Tracking detectores based on the straw
tube technology support. Software for data MC simulation and
analysis will be developed. Data analysis will be provided.
Expected
results upon completion of the project:
The
main aim of the NA64 project is s search of the new physics beyond
the SM, namely the search on the secondary CERN SPS electron and
muon beams of the dark photon (A') and hypotetical 16,7 GeV boson
as well as other dark sector manifestations.
Expected
results of the project in the current year:
1.
NA64, analysis of the experimental data.
2.
Operation and support of the detectors.
3.
Participation in NA64 experimental runs in the experimental
zone on the H4 and muon SPS channels, CERN.
4.
On-line and off-line software development, for the straw chambers
analysis and for the DAQ experiment in particular.
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Collaboration
Country
or International Organization
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City
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Institute
or laboratory
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Belarus
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Minsk
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INP
BSU
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Belgium
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Louvain-la-Neuve
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UCL
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Bulgaria
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Blagoevgrad
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SWU
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Plovdiv
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PU
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Sofia
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SU
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Canada
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Vancouver
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TRIUMF
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UBC
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CERN
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Geneva
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CERN
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Chile
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Valparaiso
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UTFSM
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Czech
Republic
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Prague
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CU
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France
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Marseille
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CPPM
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Germany
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Bonn
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UniBonn
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Mainz
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JGU
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Italy
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Ferrara
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INFN
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Florence
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INFN
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Frascati
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INFN
LNF
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Genoa
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INFN
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Naples
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INFN
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Perugia
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INFN
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Pisa
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INFN
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Rome
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INFN
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Univ.
“Tor
Vergata”
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Turin
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INFN
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Kazakhstan
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Almaty
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INP
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Mexico
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San
Luis Potosi
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UASLP
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Romania
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Bucharest
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IFIN-HH
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Russia
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Moscow
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LPI
RAS
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Moscow,
Troitsk
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HPPI
RAS
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INR
RAS
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Protvino
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IHEP
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Tomsk
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TPU
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Slovakia
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Bratislava
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CU
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Switzerland
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Lausanne
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EPFL
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Zurich
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ETH
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United
Kingdom
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Birmingham
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Univ.
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Bristol
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Univ.
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Glasgow
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U
of G
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Lancaster
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LU
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USA
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Boston,
MA
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BU
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Fairfax,
VA
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GMU
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Menlo
Park, CA
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SLAC
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Merced,
CA
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UCMerced
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Upton,
NY
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BNL
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