The production rate and kinematics of photons produced in association with Z bosons are studied using 2 fb(-1) of p (p) over bar collision data collected at the Collider Detector at Fermilab. The cross section for p (p) over bar -> l(+)l(-)gamma + X ( where the leptons l are either muons or electrons with dilepton mass M(ll) > 40 GeV/c(2), and where the photon has transverse energy E(T)(gamma) > 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 E(T) distribution from Z gamma events where the Z has decayed to mu(+) mu(-), e(+) e(-), or nu nu over bar to set limits on anomalous (non standard model) trilinear couplings between photons and Z bosons.

T., A., J., A., B. A., G., S., A., D., A., A., A., et al. (2010). Measurement of Z gamma production in p(p)over-bar collisions at root s=1.96 TeV. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 82(3), 031103-1-031103-8 [10.1103/PhysRevD.82.031103].

Measurement of Z gamma production in p(p)over-bar collisions at root s=1.96 TeV

CIOCCI, MARIA AGNESE;
2010-01-01

Abstract

The production rate and kinematics of photons produced in association with Z bosons are studied using 2 fb(-1) of p (p) over bar collision data collected at the Collider Detector at Fermilab. The cross section for p (p) over bar -> l(+)l(-)gamma + X ( where the leptons l are either muons or electrons with dilepton mass M(ll) > 40 GeV/c(2), and where the photon has transverse energy E(T)(gamma) > 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 E(T) distribution from Z gamma events where the Z has decayed to mu(+) mu(-), e(+) e(-), or nu nu over bar to set limits on anomalous (non standard model) trilinear couplings between photons and Z bosons.
2010
T., A., J., A., B. A., G., S., A., D., A., A., A., et al. (2010). Measurement of Z gamma production in p(p)over-bar collisions at root s=1.96 TeV. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 82(3), 031103-1-031103-8 [10.1103/PhysRevD.82.031103].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/35871
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