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Abstract: This paper presents a measurement of the inclusive 3-jet production differential cross section at a proton–proton centre-of-mass energy of 7 TeV using data corresponding to an integrated luminosity of 5 fb-1 collected with the CMS detector. The analysis is based on the three jets with the highest transverse momenta. The cross section is measured as a function of the invariant mass of the three jets in a range of 445–3270 GeV and in two bins of the maximum rapidity of the jets up to a value of 2. A comparison between the measurement and the prediction from perturbative QCD at next-to-leading order is performed. Within uncertainties, data and theory are in agreement. The sensitivity of the observable to the strong coupling constant aS is studied. A fit to all data points with 3-jet masses larger than 664 GeV gives a value of the strong coupling constant of aS(MZ)=0.1171±0.0013(exp)+0.0073-0.0047(theo).
Fuente: European Physical Journal C, Vol. 75, Num. 5, Art. Num. 186, (2015)
Publisher: Springer New York LLC
Publication date: 01/05/2015
No. of pages: 24
Publication type: Article
DOI: 10.1140/epjc/s10052-015-3376-y
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/s10052-015-3376-y
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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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