Searching. Please wait…
1582
37
171
29406
4423
2606
347
392
Abstract: A measurement of differential cross sections for the production of a pair of isolated photons in proton–proton collisions at vs = 7TeV is presented. The data sample corresponds to an integrated luminosity of 5.0 fb-1 collected with the CMS detector. A data-driven isolation template method is used to extract the prompt diphoton yield. The measured cross section for two isolated photons, with transverse energy above 40 and 25 GeV respectively, in the pseudorapidity range |?|<2.5, |?|?[1.44,1.57] and with an angular separation ?R>0.45, is 17.2±0.2(stat)±1.9(syst)±0.4(lumi)\,pb. Differential cross sections are measured as a function of the diphoton invariant mass, the diphoton transverse momentum, the azimuthal angle difference between the two photons, and the cosine of the polar angle in the Collins–Soper reference frame of the diphoton system. The results are compared to theoretical predictions at leading, next-to-leading, and next-to-next-to-leading order in quantum chromodynamics.
Fuente: European Physical Journal C, Vol. 74, Num. 11, Art. Num. 3129, (2014)
Publisher: Springer New York LLC
Publication date: 01/11/2014
No. of pages: 30
Publication type: Article
DOI: 10.1140/epjc/s10052-014-3129-3
ISSN: 1434-6044,1434-6052
Spanish project: FPA2014-55295-C3-1-R ; FPA 2011-28694-C02-01
Publication Url: https://doi.org/10.1140/epjc/s10052-014-3129-3
Google Scholar
Citations
UCrea Repository Read publication
CHATRCHYAN, SERGUEI
JAVIER ANDRES BROCHERO CIFUENTES
JOSE IBAN CABRILLO BARTOLOME
ALICIA CALDERON TAZON
JORGE DUARTE CAMPDERROS
MARCOS FERNANDEZ GARCIA
GERVASIO GOMEZ GRAMUGLIO
FRANCISCO JAVIER GONZALEZ SANCHEZ
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
Back