Measurement of beauty and charm production in deep inelastic scattering at HERA and measurement of the beauty-quark mass

doi:10.1007/JHEP09(2014)127

Measurement of beauty and charm production in deep inelastic scattering at HERA and measurement of the beauty-quark mass

Research output: Contribution to journal › Article › peer-review

38 Scopus citations

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, m_bat the scale m_b, was determined from a QCD fit at next-to-leading order to HERA data for the first time and found to be m_b(m_b) = 4.07 ± 0.14 (fit)_{− 0.07} ^{+ 0.01}(mod.)_{− 0.00} ^{+ 0.05}(param.)_{− 0.05} ^{+ 0.08}(theo.) GeV.

Original language	English
Article number	127
Pages (from-to)	1-56
Number of pages	56
Journal	Journal of High Energy Physics
Volume	2014
Issue number	9
DOIs	https://doi.org/10.1007/JHEP09(2014)127
State	Published - 2014
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2014, The Author(s).

Keywords

B physics
Jets
Lepton-Nucleon Scattering
QCD

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1007/JHEP09(2014)127

Cite this

@article{4e8e7aa3d305469ab3c6416518d62421,

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 = "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 A. Geiser and A. Gizhko and Gladilin, \{L. K.\} and O. Gogota",

note = "Publisher Copyright: {\textcopyright} 2014, The Author(s).",

year = "2014",

doi = "10.1007/JHEP09(2014)127",

language = "English",

volume = "2014",

pages = "1--56",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

publisher = "Springer Verlag",

number = "9",

}

TY - JOUR

T1 - Measurement of beauty and charm production in deep inelastic scattering at HERA and measurement of the beauty-quark mass

AU - Abramowicz, H.

AU - Abt, I.

AU - Adamczyk, L.

AU - Adamus, M.

AU - Aggarwal, R.

AU - Antonelli, S.

AU - Arslan, O.

AU - Aushev, V.

AU - Aushev, Y.

AU - Bachynska, O.

AU - Barakbaev, A. N.

AU - Bartosik, N.

AU - Behnke, O.

AU - Behr, J.

AU - Behrens, U.

AU - Bertolin, A.

AU - Bhadra, S.

AU - Bloch, I.

AU - Bokhonov, V.

AU - Boos, E. G.

AU - Borras, K.

AU - Brock, I.

AU - Brugnera, R.

AU - Bruni, A.

AU - Brzozowska, B.

AU - Bussey, P. J.

AU - Caldwell, A.

AU - Capua, M.

AU - Catterall, C. D.

AU - Chwastowski, J.

AU - Ciborowski, J.

AU - Ciesielski, R.

AU - Cooper-Sarkar, A. M.

AU - Corradi, M.

AU - Corriveau, F.

AU - D’Agostini, G.

AU - Dementiev, R. K.

AU - Devenish, R. C.E.

AU - Dolinska, G.

AU - Drugakov, V.

AU - Dusini, S.

AU - Ferrando, J.

AU - Figiel, J.

AU - Foster, B.

AU - Gach, G.

AU - Garfagnini, A.

AU - Geiser, A.

AU - Gizhko, A.

AU - Gladilin, L. K.

AU - Gogota, O.

PY - 2014

Y1 - 2014

N2 - 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.

AB - 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.

KW - B physics

KW - Jets

KW - Lepton-Nucleon Scattering

KW - QCD

UR - https://www.scopus.com/pages/publications/84920072172

U2 - 10.1007/JHEP09(2014)127

DO - 10.1007/JHEP09(2014)127

M3 - Article

AN - SCOPUS:84920072172

SN - 1029-8479

VL - 2014

SP - 1

EP - 56

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 9

M1 - 127

ER -

Measurement of beauty and charm production in deep inelastic scattering at HERA and measurement of the beauty-quark mass

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this