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Abstract:

A measurement of the cross-section for Υ(1S)→μ + μ - production in proton-proton collisions at centre of mass energy of 7 TeV is presented. The cross-section is measured as a function of the Υ(1S) transverse momentum in two bins of rapidity, |y Υ(1S) |<1.2 and 1.2<|y Υ(1S) |<2.4. The measurement requires that both muons have transverse momentum pTμ>4 GeV and pseudorapidity |η μ |<2.5 in order to reduce theoretical uncertainties on the acceptance, which depend on the poorly known polarisation. The results are based on an integrated luminosity of 1.13 pb -1 , collected with the ATLAS detector at the Large Hadron Collider. The cross-section measurement is compared to theoretical predictions: it agrees to within a factor of two with a prediction based on the NRQCD model including colour-singlet and colour-octet matrix elements as implemented in Pythia while it disagrees by up to a factor of ten with the next-to-leading order prediction based on the colour-singlet model. © 2011 CERN.

Registro:

Documento: Artículo
Título:Measurement of the Υ(1S) production cross-section in pp collisions at s=7 TeV in ATLAS
Autor:Aad, G. et al.
Este artículo contiene 3027 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 3027 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Año:2011
Volumen:705
Número:1-2
Página de inicio:9
Página de fin:27
DOI: http://dx.doi.org/10.1016/j.physletb.2011.09.092
Título revista:Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Título revista abreviado:Phys Lett Sect B Nucl Elem Part High-Energy Phys
ISSN:03702693
CODEN:PYLBA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v705_n1-2_p9_Aad

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Citas:

---------- APA ----------
(2011) . Measurement of the Υ(1S) production cross-section in pp collisions at s=7 TeV in ATLAS. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 705(1-2), 9-27.
http://dx.doi.org/10.1016/j.physletb.2011.09.092
---------- CHICAGO ----------
Aad, G. "Measurement of the Υ(1S) production cross-section in pp collisions at s=7 TeV in ATLAS" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 705, no. 1-2 (2011) : 9-27.
http://dx.doi.org/10.1016/j.physletb.2011.09.092
---------- MLA ----------
Aad, G. "Measurement of the Υ(1S) production cross-section in pp collisions at s=7 TeV in ATLAS" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 705, no. 1-2, 2011, pp. 9-27.
http://dx.doi.org/10.1016/j.physletb.2011.09.092
---------- VANCOUVER ----------
Aad, G. Measurement of the Υ(1S) production cross-section in pp collisions at s=7 TeV in ATLAS. Phys Lett Sect B Nucl Elem Part High-Energy Phys. 2011;705(1-2):9-27.
http://dx.doi.org/10.1016/j.physletb.2011.09.092