Measurement of the WZ cross section and triple gauge couplings in pp-bar collisions at √s=1.96 TeV

0389264 - FZÚ 2013 RIV US eng J - Článek v odborném periodiku
Aaltonen, T. - Gonzalez, B.A. - Amerio, S. - Lysák, Roman … celkem 477 autorů
Measurement of the WZ cross section and triple gauge couplings in pp-bar collisions at √s=1.96 TeV.
Physical Review D: Particles, Fields, Gravitation and Cosmology. Roč. 86, č. 3 (2012), "031104-1"-"031104-7". ISSN 1550-7998
Grant CEP: GA MŠMT LC527
Výzkumný záměr: CEZ:AV0Z10100502
Klíčová slova: W hadron production * 3 gauge boson coupling * TEVATRON * CDF
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 4.691, rok: 2012
http://arxiv.org/abs/arXiv:1202.6629

This Letter describes the current most precise measurement of the $WZ$ production cross section as well as limits on anomalous $WWZ$ couplings at a center-of-mass energy of 1.96 TeV in proton-antiproton collisions for the Collider Detector at Fermilab (CDF). $WZ$ candidates are reconstructed from decays containing three charged leptons and missing energy from a neutrino, where the charged leptons are either electrons or muons. Using data collected by the CDF II detector (7.1 fb$^{-1}$ of integrated luminosity), 63 candidate events are observed with the expected background contributing $8 /pm 1$ events. The measured total cross section $/sigma (p /bar p /to WZ) = 3.93_{-0.53}^{+0.60}(/text{stat})_{-0.46}^{+0.59}(/text{syst}) $ pb is in good agreement with the standard model prediction of $3.50/pm 0.21$. The same sample is used to set limits on anomalous $WWZ$ couplings.
Trvalý link: http://hdl.handle.net/11104/0218128