Título:
|
Exclusive J/ψ and ψ(2S) production in pp collisions at √s= 7 TeV
|
Autor/a:
|
Abellan Beteta, Carlos; Domingo Bonal, Francesc; Camboni, Alessandro; Calvo Gómez, Míriam; Vilasís Cardona, Xavier; LHCb Collaboration - CERN
|
Otros autores:
|
Universitat Ramon Llull. La Salle; CERN |
Abstract:
|
Exclusive J/ψ and ψ(2S) vector meson production has been observed in the
dimuon channel using the LHCb detector. The cross-section times branching
fractions to two muons with pseudorapidities between 2.0 and 4.5 are measured
to be
σpp→J/ψ(→μ+μ−)(2.0 < ημ± < 4.5) = 307 ± 21 ± 36 pb,
σpp→ψ(2S)(→μ+μ−)(2.0 < ημ± < 4.5) = 7.8 ± 1.3 ± 1.0 pb,
where the first uncertainties are statistical and the second are systematic.
The measurements are found to be in good agreement with results from
previous experiments and theoretical predictions. The J/ψ photoproduction
cross-section has been measured as a function of the photon-proton centre-ofmass energy. The results are consistent with measurements obtained at HERA
and confirm a similar power law behaviour for the photoproduction crosssection. |
Fecha de creación:
|
02-2013 |
Materias (CDU):
|
539 - Constitució física de la matèria |
Materia(s):
|
Gran col·lisionador d'hadrons (França i Suïssa) Partícules (Física nuclear) Col·lisions (Física nuclear) Protons Mesons |
Derechos:
|
L'accés als continguts d'aquest document queda condicionat a l'acceptació de les condicions d'ús establertes per la següent llicència Creative Commons:http://creativecommons.org/licenses/by/4.0/
© CERN |
Páginas:
|
18 p. |
Tipo de documento:
|
Artículo Artículo - Versión publicada |
DOI:
|
https://doi.org/10.1088/0954-3899/40/4/045001
|
Editor:
|
IOPscience
|
Publish at:
|
Journal of Physics G-Nuclear and Particle Physics, 2013, Vol. 40, No. 4
|
Compartir:
|
|