Transverse momentum cross section of e + e − pairs in the Z -boson region from p ¯ p collisions at √ s = 1.96 TeV

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URI: https://hdl.handle.net/10902/29052
ISSN: 1550-7998
ISSN: 1550-2368
ISSN: 2470-0010
ISSN: 2470-0029
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Autoría
Aaltonen, Timo Antero; Álvarez González, Bárbara; Casal Laraña, Bruno; Cuevas Maestro, Francisco Javier; Gómez Gramuglio, GervasioAutoridad Unican; Palencia Cortezón, José Enrique; Rodrigo Anoro, TeresaAutoridad Unican; Ruiz Jimeno, AlbertoAutoridad Unican; Scodellaro, LucaAutoridad Unican; Vila Álvarez, Iván Autoridad Unican; Vilar Cortabitarte, RocíoAutoridad Unican; Vizán García, Jesús ManuelAutoridad Unican
Fecha
2012
Derechos
© 2012 American Physical Society
Publicado en
Physical Review D, 2012, 86, 052010
Editorial
American Physical Society
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Resumen/Abstract
The transverse momentum cross section of e+e− pairs in the Z-boson mass region of 66–116  GeV/c2 is precisely measured using Run II data corresponding to 2.1  fb−1 of integrated luminosity recorded by the Collider Detector at Fermilab. The cross section is compared with two quantum chromodynamic calculations. One is a fixed-order perturbative calculation at O(α2s), and the other combines perturbative predictions at high transverse momentum with the gluon resummation formalism at low transverse momentum. Comparisons of the measurement with calculations show reasonable agreement. The measurement is of sufficient precision to allow refinements in the understanding of the transverse momentum distribution.
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