Measurement of Zγ production in pp̅ collisions at √s=1.96  TeV

The production rate and kinematics of photons produced in association with Z bosons are studied using 2  fb-1 of pp̅ collision data collected at the Collider Detector at Fermilab. The cross section for pp̅ →ℓ+ℓ-γ+X (where the leptons ℓ are either muons or electrons with dilepton mass Mℓℓ>40  GeV/...

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Detalles Bibliográficos
Autores: Aaltonen, Timo Antero, Álvarez González, Bárbara, Casal Laraña, Bruno, Cuevas Maestro, Francisco Javier, Gómez Gramuglio, Gervasio|||0000-0002-1077-6553, Rodrigo Anoro, Teresa, Ruiz Jimeno, Alberto|||0000-0002-3639-0368, Scodellaro, Luca|||0000-0002-4974-8330, Vila Álvarez, Iván |||0000-0002-6797-7209, Vilar Cortabitarte, Rocío|||0000-0003-2045-8054
Tipo de recurso: artículo
Fecha de publicación:2010
País:España
Institución:Universidad de Cantabria (UC)
Repositorio:UCrea Repositorio Abierto de la Universidad de Cantabria
Idioma:inglés
OAI Identifier:oai:repositorio.unican.es:10902/1974
Acceso en línea:http://hdl.handle.net/10902/1974
Access Level:acceso abierto
Descripción
Sumario:The production rate and kinematics of photons produced in association with Z bosons are studied using 2  fb-1 of pp̅ collision data collected at the Collider Detector at Fermilab. The cross section for pp̅ →ℓ+ℓ-γ+X (where the leptons ℓ are either muons or electrons with dilepton mass Mℓℓ>40  GeV/c2, and where the photon has transverse energy ETγ>7  GeV and is well separated from the leptons) is 4.6±0.2(stat)±0.3(syst)±0.3(lum)  pb, which is consistent with standard model expectations. We use the photon ET distribution from Zγ events where the Z has decayed to μ+μ-, e+e-, or νν̅ to set limits on anomalous (non standard model) trilinear couplings between photons and Z bosons.

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