https://doi.org/10.1140/epjc/s10052-010-1423-2
Measurement of beauty production in DIS and [InlineEquation not available: see fulltext.] extraction at ZEUS
1
Argonne National Laboratory, Argonne, IL, 60439-4815, USA
2
Andrews University, Berrien Springs, MI, 49104-0380, USA
3
INFN Bologna, Bologna, Italy
4
University and INFN Bologna, Bologna, Italy
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Physikalisches Institut der Universität Bonn, Bonn, Germany
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H.H. Wills Physics Laboratory, University of Bristol, Bristol, UK
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Department of Physics, Panjab University, Chandigarh, India
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Physics Department and INFN, Calabria University, Cosenza, Italy
9
Institute for Universe and Elementary Particles, Chonnam National University, Kwangju, South Korea
10
Jabatan Fizik, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
11
Nevis Laboratories, Columbia University, Irvington on Hudson, NY, 10027, USA
12
The Henryk Niewodniczanski Institute of Nuclear Physics, Polish Academy of Sciences, Cracow, Poland
13
Faculty of Physics and Applied Computer Science, AGH-University of Science and Technology, Cracow, Poland
14
Department of Physics, Jagellonian University, Cracow, Poland
15
Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany
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Deutsches Elektronen-Synchrotron DESY, Zeuthen, Germany
17
INFN Florence, Florence, Italy
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University and INFN Florence, Florence, Italy
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Fakultät für Physik der Universität Freiburg i.Br., Freiburg i.Br., Germany
20
Department of Physics and Astronomy, University of Glasgow, Glasgow, UK
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Department of Engineering in Management and Finance, Univ. of the Aegean, Chios, Greece
22
Institute of Exp. Physics, Hamburg University, Hamburg, Germany
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High Energy Nuclear Physics Group, Imperial College London, London, UK
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Institute of Particle and Nuclear Studies, KEK, Tsukuba, Japan
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Institute of Physics and Technology of Ministry of Education and Science of Kazakhstan, Almaty, Kazakhstan
26
Institute for Nuclear Research, National Academy of Sciences, and Kiev National University, Kiev, Ukraine
27
Center for High Energy Physics, Kyungpook National University, Daegu, South Korea
28
Institut de Physique Nucléaire, Université Catholique de Louvain, Louvain-la-Neuve, Belgium
29
Departamento de Física Teórica, Universidad Autónoma de Madrid, Madrid, Spain
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Department of Physics, McGill University, Montréal, Québec, Canada H3A 2T8,
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Faculty of General Education, Meiji Gakuin University, Yokohama, Japan
32
Moscow Engineering Physics Institute, Moscow, Russia
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Institute of Nuclear Physics, Moscow State University, Moscow, Russia
34
Max-Planck-Institut für Physik, München, Germany
35
NIKHEF and University of Amsterdam, Amsterdam, Netherlands
36
Physics Department, Ohio State University, Columbus, OH, 43210, USA
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Department of Physics, University of Oxford, Oxford, UK
38
INFN Padova, Padova, Italy
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Dipartimento di Fisica dell’ Università and INFN, Padova, Italy
40
Department of Physics, Pennsylvania State University, University Park, PA, 16802, USA
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Polytechnic University, Sagamihara, Japan
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Dipartimento di Fisica, Università ‘La Sapienza’ and INFN, Rome, Italy
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Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, UK
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Raymond and Beverly Sackler Faculty of Exact Sciences, School of Physics, Tel Aviv University, Tel Aviv, Israel
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Department of Physics, Tokyo Institute of Technology, Tokyo, Japan
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Department of Physics, University of Tokyo, Tokyo, Japan
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Department of Physics, Tokyo Metropolitan University, Tokyo, Japan
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Università di Torino and INFN, Torino, Italy
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Università del Piemonte Orientale, Novara, and INFN, Torino, Italy
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Department of Physics, University of Toronto, Toronto, Ontario, Canada M5S 1A7,
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Physics and Astronomy Department, University College London, London, UK
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Institute of Experimental Physics, Warsaw University, Warsaw, Poland
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Institute for Nuclear Studies, Warsaw, Poland
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Department of Particle Physics, Weizmann Institute, Rehovot, Israel
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Department of Physics, University of Wisconsin, Madison, WI, 53706, USA
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Department of Physics, York University, Ontario, Canada M3J 1P3,
Received:
1
June
2010
Revised:
3
August
2010
Published online:
2
September
2010
Beauty production in deep inelastic scattering with events in which a muon and a jet are observed in the final state has been measured with the ZEUS detector at HERA using an integrated luminosity of 114 pb−1. The fraction of events with beauty quarks in the data was determined using the distribution of the transverse momentum of the muon relative to the jet. The cross section for beauty production was measured in the kinematic range of photon virtuality, Q 2>2 GeV2, and inelasticity, 0.05<y<0.7, with the requirement of a muon and a jet. Total and differential cross sections are presented and compared to QCD predictions. The beauty contribution to the structure function F 2 was extracted and is compared to theoretical predictions.
© Springer-Verlag / Società Italiana di Fisica, 2010