0000000000920622

AUTHOR

O. Y. Denisov

showing 2 related works from this author

Design and construction of the fast photon detection system for COMPASS RICH-1

2010

International audience; New photon detectors, based on the use of multi-anode photo-multiplier tubes coupled to individual lens telescopes and read out with a dedicated read-out electronics system, equip the central region of the Cherenkov imaging counter RICH-1 of the COMPASS experiment at CERN SPS. They are characterised by high photon yield, fast response and high rate capability and are successfully in operation since the 2006 COMPASS data taking. The photon detection system fully matches the expected performance. The design and construction of the photon detectors are described in detail.

Nuclear and High Energy PhysicsPhotomultiplierPhysics::Instrumentation and DetectorsMulti-anode photo-multiplier[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]COMPASS01 natural sciencesParticle identificationlaw.inventionOpticsParticle identification; COMPASS; RICH; Multi-anode photo-multiplier; Quartz lens telescopelawCompass0103 physical sciencesCOMPASS experimentAngular resolutionElectronics010306 general physicsRICHInstrumentationCherenkov radiationPhysicsLarge Hadron Collider010308 nuclear & particles physicsbusiness.industryQuartz lens telescopeLens (optics)High Energy Physics::ExperimentbusinessNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
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Study of Σ(1385) and Ξ(1321) hyperon and antihyperon production in deep inelastic muon scattering

2013

Large samples of \Lambda, \Sigma(1385) and \Xi(1321) hyperons produced in deep-inelastic muon scattering off a ^6LiD target were collected with the COMPASS experimental setup at CERN. The relative yields of \Sigma(1385)^+, \Sigma(1385)^-, \bar{\Sigma}(1385)^-, \bar{\Sigma}(1385)^+, \Xi(1321)^-, and \bar{\Xi}(1321)^+ hyperons decaying into \Lambda(\bar{\Lambda})\pi were measured. The heavy hyperon to \Lambda and heavy antihyperon to \bar{\Lambda} yield ratios were found to be in the range 3.8% to 5.6% with a relative uncertainty of about 10%. They were used to tune the parameters relevant for strange particle production of the LEPTO Monte Carlo generator.

disParticle physicsStrange quarkdis; hyperon productionPhysics and Astronomy (miscellaneous)diLambda01 natural sciencesCOMPASSHigh Energy Physics - Experimenthyperon production0103 physical sciencesCHARGED CURRENT INTERACTIONSCHARGED CURRENT INTERACTIONS; (LAMBDA)OVER-BAR POLARIZATION; COMPASS010306 general physicsNuclear ExperimentEngineering (miscellaneous)Nuclear ExperimentPhysicsMuon010308 nuclear & particles physicsGenerator (category theory)High Energy Physics::PhenomenologyHyperon(LAMBDA)OVER-BAR POLARIZATIONSigmaProduction (computer science)High Energy Physics::ExperimentParticle Physics - ExperimentBar (unit)
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