ϒ(nS) polarizations versus particle multiplicity in pp collisions at
Journal Article
·
· Physics Letters B
The polarizations of the Y(1S), Y(2S), and Y(3S) mesons are measured as a function of the charged particle multiplicity in proton-proton collisions at √s = 7 TeV. The measurements are performed with a dimuon data sample collected in 2011 by the CMS experiment, corresponding to an integrated luminosity of 4.9 fb–1. The results are extracted from the dimuon decay angular distributions, in two ranges of Y(nS) transverse momentum (10-15 and 15-35 GeV), and in the rapidity interval |y| < 1.2. Furthermore, the results do not show significant changes from low- to high-multiplicity pp collisions, although large uncertainties preclude definite statements in the Y(2S) and Y(3S) cases.
- Research Organization:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Organization:
- CMS
- Grant/Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1286299
- Alternate ID(s):
- OSTI ID: 1253588
- Report Number(s):
- FERMILAB-PUB-16-102-CMS; CMS-HIN-15-003; CERN-PH-EP-2015-310; arXiv:1603.02913; S0370269316304063; PII: S0370269316304063
- Journal Information:
- Physics Letters B, Journal Name: Physics Letters B Vol. 761 Journal Issue: C; ISSN 0370-2693
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- Netherlands
- Language:
- English
Cited by: 5 works
Citation information provided by
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