This Letter describes the current most precise measurement of the W boson pair production cross section and most sensitive test of anomalous WWgamma and WWZ couplings in p anti-p collisions at a center-of-mass energy of 1.96 TeV. The WW candidates are reconstructed from decays containing two charged leptons and two neutrinos, where the charged leptons are either electrons or muons. Using data collected by the CDF II detector from 3.6 fb-1 of integrated luminosity, a total of 654 candidate events are observed with an expected background contribution of 320 +/- 47 events. The measured total cross section is sigma(p anti-p --> W+W- + X) = 12.1 +/- 0.9 (stat)+1.6_-1.4 (syst) pb, which is in good agreement with the standard model prediction. The same data sample is used to place constraints on anomalous WWgamma and WWZ couplings.
Measurement of the W+W- Production Cross Section and Search for Anomalous WWg and WWZ Couplings / T. AALTONEN; B.ALVAREZ GONZALEZV; S. AMERIO; D. AMIDEI; A. ANASTASSOV; A. ANNOVI; J. ANTOS; G. APOLLINARI; J.A. APPEL; A. APRESYAN; T. ARISAWA; A. ARTIKOV; J. ASAADI; W. ASHMANSKAS; B. AUERBACH; A. AURISANO; F. AZFAR; W. BADGETT; A. BARBARO-GALTIERI; V.E. BARNES; B.A. BARNETT; P. BARRIAEE; P. BARTOS; M. BAUCECC; G. BAUER; F. BEDESCHI; D. BEECHER; S. BEHARI; G. BELLETTINI; J. BELLINGER; D. BENJAMIN; A. BERETVAS; A. BHATTI; M. BINKLEY; D. BISELLO; I. BIZJAK; K.R. BLAND; C. BLOCKER; B. BLUMENFELD; A. BOCCI; A. BODEK; D. BORTOLETTO; J. BOUDREAU; A. BOVEIA; B. BRAUA; L. BRIGLIADORI; A. BRISUDA; C. BROMBERG; E. BRUCKEN; M. BUCCIANTONIO; J. BUDAGOV; H.S. BUDD; S. BUDD; K. BURKETT; G. BUSETTO; P. BUSSEY; A. BUZATU; S. CABRERA; C. CALANCHA; S. CAMARDA; M. CAMPANELLI; M. CAMPBELL; F. CANELLI; A. CANEPA; B. CARLS; D. CARLSMITH; R. CAROSI; S. CARRILLO; S. CARRON; B. CASAL; M. CASARSA; A. CASTRO; P. 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Measurement of the W+W- Production Cross Section and Search for Anomalous WWg and WWZ Couplings
CASTRO, ANDREA;DENINNO, MARIA MADDALENA;MARGAROLI, FABRIZIO;MAZZANTI, PAOLO;MOGGI, NICCOLO';MUSSINI, MANUEL;RIMONDI, FRANCO;ZUCCHELLI, STEFANO
2010
Abstract
This Letter describes the current most precise measurement of the W boson pair production cross section and most sensitive test of anomalous WWgamma and WWZ couplings in p anti-p collisions at a center-of-mass energy of 1.96 TeV. The WW candidates are reconstructed from decays containing two charged leptons and two neutrinos, where the charged leptons are either electrons or muons. Using data collected by the CDF II detector from 3.6 fb-1 of integrated luminosity, a total of 654 candidate events are observed with an expected background contribution of 320 +/- 47 events. The measured total cross section is sigma(p anti-p --> W+W- + X) = 12.1 +/- 0.9 (stat)+1.6_-1.4 (syst) pb, which is in good agreement with the standard model prediction. The same data sample is used to place constraints on anomalous WWgamma and WWZ couplings.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
