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Measurement of the production cross section ratio o(xb2(1P))/o(xb1(1P)) in pp collisions at s=8 TeV

Khachatryan, V.; Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Bergauer, T.; Dragicevic, M.; Erö, J.; Fabjan, C.; Friedl, M.; Frühwirth, R.; Ghete, V.M.; Hartl, C.; Hörmann, N.; Hrubec, J.; Jeitler, M.; Kiesenhofer, W.; Knünz, V.; Krammer, M.; Krätschmer, I.; Liko, D.; ... mehr

Abstract:
A measurement of the production cross section ratio &#963;(&#967;b2(1P))/&#963;(&#967;b1(1P)) is presented. The &#967;b1(1P) and &#967;b2(1P) bottomonium states, promptly produced in pp collisions at s=8 TeV , are detected by the CMS experiment at the CERN LHC through their radiative decays &#967;b1,2(1P)&#8594;&#978;(1S)+&#947; . The emitted photons are measured through their conversion to e+e&#8722; pairs, whose reconstruction allows the two states to be resolved. The &#978;(1S) is measured through its decay to two muons. An event sample corresponding to an integrated luminosity of 20.7 fb&#8722;1 is used to measure the cross section ratio in a phase-space region defined by the photon pseudorapidity, |&#951;&#947;|<1.0 ; the &#978;(1S) rapidity, |y&#978;|<1.5 ; and the &#978;(1S) transverse momentum, 7

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Volltext §
DOI: 10.5445/IR/1000047488
Originalveröffentlichung
DOI: 10.1016/j.physletb.2015.02.048
Scopus
Zitationen: 13
Web of Science
Zitationen: 8
Coverbild
Zugehörige Institution(en) am KIT Institut für Experimentelle Kernphysik (IEKP)
Publikationstyp Zeitschriftenaufsatz
Jahr 2015
Sprache Englisch
Identifikator ISSN: 0370-2693
urn:nbn:de:swb:90-474887
KITopen-ID: 1000047488
Erschienen in Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Band 743
Seiten 383-402
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
Nachgewiesen in Scopus
Web of Science
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