We report on a search for the process p anti-p --> gamma + W/Z with W/Z --> qq-bar in events containing two jets and a photon at the center-of-mass energy s**(1/2) = 1.96 TeV, using 184 pb-1 of data collected by the CDF II detector. A neural network event selection has been developed to optimize the rejection of the large QCD production background; it is shown that this method gives a significant improvement in both signal-to-noise ratio and signal sensitivity, as compared with an event selection based on conventional cuts. An upper limit is presented for the gamma + W/Z production cross section with the W and Z decaying hadronically.

T. Aaltonen, J. Adelman, T. Akimoto, M. G. Albrow, B. Alvarez Gonzalez, S. Amerio, et al. (2009). Search for Hadronic Decays of W and Z Bosons in Photon Events in p anti-p Collisions at s**(1/2) =1.96 TeV. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 80(5), 052011-1-052011-17 [10.1103/PhysRevD.80.079901].

Search for Hadronic Decays of W and Z Bosons in Photon Events in p anti-p Collisions at s**(1/2) =1.96 TeV

CASTRO, ANDREA;DENINNO, MARIA MADDALENA;MOGGI, NICCOLO';RIMONDI, FRANCO;ZUCCHELLI, STEFANO
2009

Abstract

We report on a search for the process p anti-p --> gamma + W/Z with W/Z --> qq-bar in events containing two jets and a photon at the center-of-mass energy s**(1/2) = 1.96 TeV, using 184 pb-1 of data collected by the CDF II detector. A neural network event selection has been developed to optimize the rejection of the large QCD production background; it is shown that this method gives a significant improvement in both signal-to-noise ratio and signal sensitivity, as compared with an event selection based on conventional cuts. An upper limit is presented for the gamma + W/Z production cross section with the W and Z decaying hadronically.
2009
T. Aaltonen, J. Adelman, T. Akimoto, M. G. Albrow, B. Alvarez Gonzalez, S. Amerio, et al. (2009). Search for Hadronic Decays of W and Z Bosons in Photon Events in p anti-p Collisions at s**(1/2) =1.96 TeV. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 80(5), 052011-1-052011-17 [10.1103/PhysRevD.80.079901].
T. Aaltonen; J. Adelman; T. Akimoto; M. G. Albrow; B. Alvarez Gonzalez; S. Amerio; D. Amidei; A. Anastassov; A. Annovi; J. Antos; M. Aoki; G. Apollina...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/84463
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