6533b7dcfe1ef96bd12726f7
RESEARCH PRODUCT
Measurement of Upsilon production in collisions at root s=2.76 TeV
Lhcb CollaborationFernando Martínez VidalArantza Oyanguren CamposPablo Ruiz Vallssubject
PP COLLISIONSScience & Technology530 PhysicsPhysicsPHYSICS PARTICLES & FIELDSOCTET QUARKONIA PRODUCTIONPhysics InstituteLHCb - Abteilung HofmannJ-PSIoctet quarkonia productin; PP collisions; J-PSI; hadronic production; decay; distributions; toolHigh Energy Physics - ExperimentSettore FIS/04 - Fisica Nucleare e SubnuclearePhysical SciencesDISTRIBUTIONSTOOLFísica nuclearDECAYParticle Physics - ExperimentHADRONIC PRODUCTIONdescription
The production of Υ(1S) , Υ(2S) and Υ(3S) mesons decaying into the dimuon final state is studied with the LHCb detector using a data sample corresponding to an integrated luminosity of 3.3pb-1 collected in proton–proton collisions at a centre-of-mass energy of s=2.76 TeV. The differential production cross-sections times dimuon branching fractions are measured as functions of the Υ transverse momentum and rapidity, over the ranges pT<15 GeV/ c and 2.0<y<4.5 . The total cross-sections in this kinematic region, assuming unpolarised production, are measured to be σpp→Υ(1S)X×BΥ(1S)→μ+μ-=1.111±0.043±0.044nb,σpp→Υ(2S)X×BΥ(2S)→μ+μ-=0.264±0.023±0.011nb,σpp→Υ(3S)X×BΥ(3S)→μ+μ-=0.159±0.020±0.007nb, where the first uncertainty is statistical and the second systematic.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2014-01-01 |