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Abstract: A measurement of the production cross section ratio s(?b2(1P))/s(?b1(1P))is presented. The ?b1(1P)and ?b2(1P)bottomonium states, promptly produced in pp collisions at vs=8TeV, are detected by the CMS experiment at the CERN LHC through their radiative decays ?b1,2(1P) ??(1S) +?. The emitted photons are measured through their conversion to e+e-pairs, whose reconstruction allows the two states to be resolved. The ?(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, |??| <1.0; the ?(1S)rapidity, |y?| <1.5; and the ?(1S)transverse momentum, 7
Fuente: Physics Letters B, Vol. 743, Pp. 383–402, (2015)
Publisher: Elsevier
Publication date: 01/04/2015
No. of pages: 20
Publication type: Article
DOI: 10.1016/j.physletb.2015.02.048
ISSN: 0370-2693,1873-2445
Spanish project: FPA2014-55295-C3-1-R ; FPA 2011-28694-C02-01
Publication Url: https://doi.org/10.1016/j.physletb.2015.02.048
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UCrea Repository Read publication
KHACHATRYAN, VLADIMIR
JAVIER ANDRES BROCHERO CIFUENTES
JOSE IBAN CABRILLO BARTOLOME
ALICIA CALDERON TAZON
JORGE DUARTE CAMPDERROS
MARCOS FERNANDEZ GARCIA
GERVASIO GOMEZ GRAMUGLIO
ALBERTO GRAZIANO
MARIA AMPARO LOPEZ VIRTO
JESUS MARCO DE LUCAS
RAFAEL JOSE MARCO DE LUCAS
CELSO MARTINEZ RIVERO
FRANCISCO MATORRAS WEINIG
FRANCISCA JAVIELA MUÑOZ SANCHEZ
JONATAN PIEDRA GOMEZ
MARIA TERESA RODRIGO ANORO
ANA YAIZA RODRIGUEZ MARRERO
ALBERTO RUIZ JIMENO
LUCA SCODELLARO
IVAN VILA ALVAREZ
ROCIO VILAR CORTABITARTE
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