First measurement of the forward-backward asymmetry in bottom-quark pair production at high mass

Aaltonen, Timo Antero; Casal Laraña, Bruno; Cuevas Maestro, Francisco Javier; Gómez Gramuglio, Gervasio; Palencia Cortezón, José Enrique; Ruiz Jimeno, Alberto; Scodellaro, Luca; Vilar Cortabitarte, Rocío; Vizán García, Jesús Manuel

doi:10.1103/PhysRevD.92.032006

dc.contributor.author	Aaltonen, Timo Antero
dc.contributor.author	Casal Laraña, Bruno
dc.contributor.author	Cuevas Maestro, Francisco Javier
dc.contributor.author	Gómez Gramuglio, Gervasio
dc.contributor.author	Palencia Cortezón, José Enrique
dc.contributor.author	Ruiz Jimeno, Alberto
dc.contributor.author	Scodellaro, Luca
dc.contributor.author	Vilar Cortabitarte, Rocío
dc.contributor.author	Vizán García, Jesús Manuel
dc.contributor.other	Universidad de Cantabria	es_ES
dc.date.accessioned	2018-06-21T08:48:27Z
dc.date.available	2018-06-21T08:48:27Z
dc.date.issued	2015-07
dc.identifier.issn	1550-7998
dc.identifier.issn	1550-2368
dc.identifier.other	FPA2014-55295-C3-1-R
dc.identifier.other	FPA 2011-28694-C02-01
dc.identifier.uri	http://hdl.handle.net/10902/13992
dc.description.abstract	We measure the particle-level forward-backward production asymmetry in b¯b pairs with masses (mb¯b) larger than 150 GeV/c2, using events with hadronic jets and employing jet charge to distinguish b from ¯b. The measurement uses 9.5 fb−1 of p¯p collisions at a center-of-mass energy of 1.96 TeV recorded by the CDF II detector. The asymmetry as a function of mb¯b is consistent with zero, as well as with the predictions of the standard model. The measurement disfavors a simple model including an axigluon with a mass of 200 GeV/c2, whereas a model containing a heavier 345 GeV/c2 axigluon is not excluded.	es_ES
dc.description.sponsorship	We thank the Fermilab staff and the technical staffs of the participating institutions for their vital contributions. This work was supported by the U.S. Department of Energy and National Science Foundation; the Italian Istituto Nazionaledi Fisica Nucleare; the Ministry of Education, Culture, Sports, Science and Technology of Japan; the Natural Sciences and Engineering Research Council of Canada; The National Science Council of the Republic of China; the Swiss National Science Foundation; the A. P. Sloan Foundation; the Bundesministerium für Bildung und Forschung, Germany; the Korean World Class University Program, the National Research Foundation of Korea; theScience and Technology Facilities Council and the Royal Society, United Kingdom; the Russian Foundation for Basic Research; the Ministerio de Ciencia e Innovación, and Programa Consolider-Ingenio 2010, Spain; the Slovak R&D Agency; the Academy of Finland; the Australian Research Council; and the EU community Marie Curie Fellowship Contract No. 302103.	es_ES
dc.format.extent	11 p.	es_ES
dc.language.iso	eng	es_ES
dc.publisher	American Physical Society	es_ES
dc.rights	Atribución 3.0 España	*
dc.rights.uri	http://creativecommons.org/licenses/by/3.0/es/	*
dc.source	Phys. Rev. D, Vol. 92, Num. 3, Pag. 032006 (2015)	es_ES
dc.title	First measurement of the forward-backward asymmetry in bottom-quark pair production at high mass	es_ES
dc.type	info:eu-repo/semantics/article	es_ES
dc.relation.publisherVersion	https://doi.org/10.1103/PhysRevD.92.032006	es_ES
dc.rights.accessRights	openAccess	es_ES
dc.identifier.DOI	10.1103/PhysRevD.92.032006
dc.type.version	publishedVersion	es_ES