Observation of X(3872) production in pp collisions at s√=7 TeV

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dc.contributor	Universitat de Barcelona
dc.contributor.author	Abellan Beteta, Carlos
dc.contributor.author	Calvo Gómez, Míriam
dc.contributor.author	Camboni, Alessandro
dc.contributor.author	Comerma Montells, Albert
dc.contributor.author	Domingo Bonal, Francesc
dc.contributor.author	Garrido Beltrán, Lluís
dc.contributor.author	Gascón Fora, David
dc.contributor.author	Grabalosa Gándara, Marc
dc.contributor.author	Graciani Díaz, Ricardo
dc.contributor.author	Graugés Pous, Eugeni
dc.contributor.author	López Asamar, Elias
dc.contributor.author	Musy, Marco
dc.contributor.author	Pérez-Calero Yzquierdo, Antonio
dc.contributor.author	Picatoste Olloqui, Eduardo
dc.contributor.author	Pie Valls, B. (Blai)
dc.contributor.author	Potterat, Cédric
dc.contributor.author	Puig Navarro, Albert
dc.contributor.author	Roselló, M.
dc.contributor.author	Ruiz, Hugo (Ruiz Pérez)
dc.contributor.author	Vázquez Gómez, Ricard
dc.contributor.author	Vilasis-Cardona, Xavier
dc.contributor.author	LHCb Collaboration
dc.date	2014-10-02T10:06:00Z
dc.date	2014-10-02T10:06:00Z
dc.date	2012-05
dc.date	2014-10-02T10:06:00Z
dc.identifier.citation	2190-5444
dc.identifier.citation	619623
dc.identifier.uri	http://hdl.handle.net/2445/57951
dc.format	9 p.
dc.format	application/pdf
dc.language.iso	eng
dc.publisher	EDP Sciences
dc.relation	Reproducció del document publicat a: http://doi.dx.org/10.1140/epjc/s10052-012-1972-7
dc.relation	European Physical Journal Plus, 2012, vol. 72, num. 1972, p. 1-9
dc.relation	http://dx.doi.org/10.1140/epjc/s10052-012-1972-7
dc.rights	cc by (c) LHCb Collaboration, 2012
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	http://creativecommons.org/licenses/by/3.0/
dc.subject	Física nuclear
dc.subject	Hadrons
dc.subject	Teoria quàntica de camps
dc.subject	Astrofísica
dc.subject	Energia nuclear
dc.subject	Nuclear physics
dc.subject	Hadrons
dc.subject	Quantum field theory
dc.subject	Astrophysics
dc.subject	Nuclear energy
dc.title	Observation of X(3872) production in pp collisions at s√=7 TeV
dc.type	info:eu-repo/semantics/article
dc.type	info:eu-repo/semantics/publishedVersion
dc.description.abstract	Using 34.7 pb−1 of data collected with the LHCb detector, the inclusive production of the X(3872) meson in pp collisions at s√=7~TeV is observed for the first time. Candidates are selected in the X(3872)→J/ψπ + π − decay mode, and used to measure where σ(pp→X(3872)+anything) is the inclusive production cross section of X(3872) mesons with rapidity in the range 2.5 4.5 and transverse momentum in the range 5 20 GeV/c. In addition the masses of both the X(3872) and ψ(2S) mesons, reconstructed in the J/ψπ + π − final state, are measured to be mX(3872)=3871.95±0.48 (stat)±0.12 (syst) MeV/c2 and mψ(2S)=3686.12±0.06 (stat)±0.10 (syst) MeV/c2.

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