Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 김태정 | - |
dc.date.accessioned | 2016-08-29T02:36:07Z | - |
dc.date.available | 2016-08-29T02:36:07Z | - |
dc.date.issued | 2015-03 | - |
dc.identifier.citation | PHYSICS LETTERS B, v. 743, Page. 383-402 | en_US |
dc.identifier.issn | 0370-2693 | - |
dc.identifier.issn | 1873-2445 | - |
dc.identifier.uri | http://www.sciencedirect.com/science/article/pii/S0370269315001392 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11754/22806 | - |
dc.description.abstract | A measurement of the production cross section ratio σ(χb2(1P))/σ(χb1(1P))σ(χb2(1P))/σ(χb1(1P)) is presented. The χb1(1P)χb1(1P) and χb2(1P)χb2(1P) bottomonium states, promptly produced in pp collisions at View the MathML sources=8 TeV, are detected by the CMS experiment at the CERN LHC through their radiative decays χb1,2(1P)→ϒ(1S)+γχb1,2(1P)→ϒ(1S)+γ. The emitted photons are measured through their conversion to e+e−e+e− pairs, whose reconstruction allows the two states to be resolved. The ϒ(1S)ϒ(1S) is measured through its decay to two muons. An event sample corresponding to an integrated luminosity of 20.7 fb−120.7 fb−1 is used to measure the cross section ratio in a phase-space region defined by the photon pseudorapidity, |ηγ|<1.0|ηγ|<1.0; the ϒ(1S)ϒ(1S) rapidity, |yϒ|<1.5|yϒ|<1.5; and the ϒ(1S)ϒ(1S) transverse momentum, View the MathML source7<pTϒ<40 GeV. The cross section ratio shows no significant dependence on the ϒ(1S)ϒ(1S) transverse momentum, with a measured average value of View the MathML source0.85±0.07(stat+syst)±0.08(BF), where the first uncertainty is the combination of the experimental statistical and systematic uncertainties and the second is from the uncertainty in the ratio of the χbχb branching fractions. | en_US |
dc.language.iso | en | en_US |
dc.publisher | ELSEVIER SCIENCE BV | en_US |
dc.subject | CMS | en_US |
dc.subject | Quarkonium production | en_US |
dc.subject | P-wave states | en_US |
dc.subject | Bottomonium | en_US |
dc.title | Measurement of the production cross section ratio sigma(chi b2(1P))/sigma(chi b1(1P)) in pp collisions at root s=8TeV | en_US |
dc.type | Article | en_US |
dc.relation.volume | 743 | - |
dc.identifier.doi | 10.1016/j.physletb.2015.02.048 | - |
dc.relation.page | 383-402 | - |
dc.relation.journal | PHYSICS LETTERS B | - |
dc.contributor.googleauthor | Khachatryan, V. | - |
dc.contributor.googleauthor | Sirunyan, A.M. | - |
dc.contributor.googleauthor | Tumasyan, A. | - |
dc.contributor.googleauthor | Adam, W. | - |
dc.contributor.googleauthor | Bergauer, T. | - |
dc.contributor.googleauthor | Dragicevic, M. | - |
dc.contributor.googleauthor | Erö, J. | - |
dc.contributor.googleauthor | Fabjan, C. | - |
dc.contributor.googleauthor | Friedl, M. | - |
dc.contributor.googleauthor | Kim, T.J. | - |
dc.relation.code | 2015003302 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF NATURAL SCIENCES[S] | - |
dc.sector.department | DEPARTMENT OF PHYSICS | - |
dc.identifier.pid | taekim | - |
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