Search for quark compositeness in dijet angular distributions from pp collisions at s√=7 TeV

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URI: https://hdl.handle.net/10902/28317
ISSN: 1126-6708
ISSN: 1029-8479
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Autoría
Chatrchyan, S.; Brochero Cifuentes, Javier AndrésAutoridad Unican; Cabrillo Bartolomé, José IbanAutoridad Unican; Calderón Tazón, AliciaAutoridad Unican; Chuang, S. H.; Duarte Campderros, JorgeAutoridad Unican; Felcini, Marta; Fernández García, MarcosAutoridad Unican; Gómez Gramuglio, GervasioAutoridad Unican; González Sánchez, Francisco JavierAutoridad Unican; Jordá Lope, Clara; Lobelle Pardo, Patricia; López Virto, María Amparo; Marco de Lucas, JesúsAutoridad Unican; Marco de Lucas, Rafael José; Martínez Rivero, Celso; Matorras Weinig, FranciscoAutoridad Unican; Muñoz Sánchez, Francisca Javiela; Piedra Gómez, JonatanAutoridad Unican; [et al.]
Fecha
2012-05
Derechos
Attribution 4.0 International. ©CERN, for the benefit of the CMS Collaboration
Publicado en
Journal of High Energy Physics, 2012, 2012(5), 055
Editorial
Springer Verlag
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Palabras clave
Hadron-hadron scattering
Resumen/Abstract
A search for quark compositeness using dijet angular distributions from pp collisions at s√=7 TeV is presented. The search has been carried out using a data sample corresponding to an integrated luminosity of 2.2 fb−1, recorded by the CMS experiment at the LHC. Normalized dijet angular distributions have been measured for dijet invariant masses from 0.4 TeV to above 3 TeV and compared with a variety of contact interaction models, including those which take into account the effects of next-to-leading-order QCD corrections. The data are found to be in agreement with the predictions of perturbative QCD, and lower limits are obtained on the contact interaction scale, ranging from 7.5 up to 14.5 TeV at 95 % confidence level.
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