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dc.contributor.authorBaringer, Philip S.
dc.contributor.authorBean, Alice
dc.contributor.authorMurray, Michael J.
dc.contributor.authorSanders, Stephen J.
dc.date.accessioned2016-12-02T22:19:58Z
dc.date.available2016-12-02T22:19:58Z
dc.date.issued2015-02-24
dc.identifier.citationHewamanage, S., Linn, S., Markowitz, P. E., Martinez, G., Rodriguez, J. L., & CMS Collaboration. (2015). Measurement of the production cross section ratio σ (χb2 (1P))/σ (χb1 (1P)) in pp collisions at√ s= 8TeV.en_US
dc.identifier.urihttp://hdl.handle.net/1808/22129
dc.description.abstractA measurement of the production cross section ratio σ(χb2(1P))/σ(χb1(1P))is presented. The χb1(1P)and χb2(1P)bottomonium states, promptly produced in pp collisions at √s=8TeV, are detected by the CMS experiment at the CERN LHC through their radiative decays χb1,2(1P) →ϒ(1S) +γ. The emitted photons are measured through their conversion to e+e−pairs, whose reconstruction allows the two states to be resolved. The ϒ(1S)is measured through its decay to two muons. An event sample corresponding to an integrated luminosity of 20.7fb−1is used to measure the cross section ratio in a phase-space region defined by the photon pseudorapidity, |ηγ| <1.0; the ϒ(1S)rapidity, |yϒ| <1.5; and the ϒ(1S)transverse momentum, 7 <pϒT<40GeV. The cross section ratio shows no significant dependence on the ϒ(1S)transverse momentum, with a measured average value of 0.85 ±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 χbbranching fractions.en_US
dc.publisherElsevieren_US
dc.rights©2015 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.en_US
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectCMSen_US
dc.subjectQuarkonium productionen_US
dc.subjectP-wave statesen_US
dc.subjectBottomoniumen_US
dc.titleMeasurement of the production cross section ratio σ(χb2(1P))/σ(χb1(1P))in pp collisions at √s=8TeVen_US
dc.typeArticleen_US
kusw.kuauthorBaringer, Philip S.
kusw.kuauthorBean, Alice
kusw.kuauthorMurray, Michael J.
kusw.kuauthorSanders, Stephen J.
kusw.kudepartmentPhysics and Astronomyen_US
dc.identifier.doi10.1016/j.physletb.2015.02.048en_US
kusw.oaversionScholarly/refereed, publisher versionen_US
kusw.oapolicyThis item meets KU Open Access policy criteria.en_US
dc.rights.accessrightsopenAccess


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©2015 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.
Except where otherwise noted, this item's license is described as: ©2015 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.