@article{49ae1370b5854f1d850bc08da58c322e,
title = "Measurement of beauty and charm production in deep inelastic scattering at HERA and measurement of the beauty-quark mass",
abstract = "Abstract: The production of beauty and charm quarks in ep interactions has been studied with the ZEUS detector at HERA for exchanged four-momentum squared 5 < Q2< 1000 GeV2using an integrated luminosity of 354 pb−1. The beauty and charm content in events with at least one jet have been extracted using the invariant mass of charged tracks associated with secondary vertices and the decay-length significance of these vertices. Differential cross sections as a function of Q2, Bjorken x, jet trans- verse energy and pseudorapidity were measured and compared with next-to-leading-order QCD calculations. The beauty and charm contributions to the proton structure functions were extracted from the double-differential cross section as a function of x and Q2. The running beauty-quark mass, mbat the scale mb, was determined from a QCD fit at next-to-leading order to HERA data for the first time and found to be mb(mb) = 4.07 ± 0.14 (fit)− 0.07 + 0.01(mod.)− 0.00 + 0.05(param.)− 0.05 + 0.08(theo.) GeV.",
keywords = "B physics, Jets, Lepton-Nucleon Scattering, QCD",
author = "{ZEUS collaboration} and H. Abramowicz and I. Abt and L. Adamczyk and M. Adamus and R. Aggarwal and S. Antonelli and O. Arslan and V. Aushev and Y. Aushev and O. Bachynska and Barakbaev, {A. N.} and N. Bartosik and O. Behnke and J. Behr and U. Behrens and A. Bertolin and S. Bhadra and I. Bloch and V. Bokhonov and Boos, {E. G.} and K. Borras and I. Brock and R. Brugnera and A. Bruni and B. Brzozowska and Bussey, {P. J.} and A. Caldwell and M. Capua and Catterall, {C. D.} and J. Chwastowski and J. Ciborowski and R. Ciesielski and Cooper-Sarkar, {A. M.} and M. Corradi and F. Corriveau and G. D{\textquoteright}Agostini and Dementiev, {R. K.} and Devenish, {R. C.E.} and G. Dolinska and V. Drugakov and S. Dusini and J. Ferrando and J. Figiel and B. Foster and G. Gach and A. Garfagnini and S. Kananov and O. Kuprash and A. Levy and A. Stern",
note = "Publisher Copyright: {\textcopyright} 2014, The Author(s).",
year = "2014",
doi = "10.1007/JHEP09(2014)127",
language = "אנגלית",
volume = "2014",
pages = "1--56",
journal = "Journal of High Energy Physics",
issn = "1126-6708",
publisher = "Springer Verlag",
number = "9",
}