The cross section for jets from b quarks produced simultaneously with a W boson has been measured in p anti-p collision data from 1.9 fb-1 of integrated luminosity recorded by the CDF II detector at the Tevatron. Jets consistent with the decay of long-lived hadrons are selected by identifying a displaced decay vertex. The invariant mass of the charged particle tracks associated with the vertex is sensitive to the flavor of the decaying hadron and is used to determine the fraction of jets from b-quark production. We measure a b-jet cross section of 2.74 +/- 0.27(stat.) +/- 0.42(syst.) pb in association with one flavor of leptonic W boson decay over a limited kinematic phase space.
T. AALTONEN, B.ALVAREZ GONZALEZV, S. AMERIO, D. AMIDEI, A. ANASTASSOV, A. ANNOVI, et al. (2010). Measurement of the b-jet Cross Section in Events with a W Boson in p anti-p Collisions at s**(1/2) =1.96 TeV. PHYSICAL REVIEW LETTERS, 104, 131801-1-131801-8 [10.1103/PhysRevLett.104.131801].
Measurement of the b-jet Cross Section in Events with a W Boson in p anti-p Collisions at s**(1/2) =1.96 TeV
CASTRO, ANDREA;DENINNO, MARIA MADDALENA;MARGAROLI, FABRIZIO;MAZZANTI, PAOLO;MOGGI, NICCOLO';MUSSINI, MANUEL;RIMONDI, FRANCO;ZUCCHELLI, STEFANO
2010
Abstract
The cross section for jets from b quarks produced simultaneously with a W boson has been measured in p anti-p collision data from 1.9 fb-1 of integrated luminosity recorded by the CDF II detector at the Tevatron. Jets consistent with the decay of long-lived hadrons are selected by identifying a displaced decay vertex. The invariant mass of the charged particle tracks associated with the vertex is sensitive to the flavor of the decaying hadron and is used to determine the fraction of jets from b-quark production. We measure a b-jet cross section of 2.74 +/- 0.27(stat.) +/- 0.42(syst.) pb in association with one flavor of leptonic W boson decay over a limited kinematic phase space.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
