Measurement of beauty production in deep inelastic scattering at HERA

被引：48

作者：

Chekanov, S ^{[1
]}

Derrick, M

Loizides, JH

Magill, S

Miglioranzi, S

Musgrave, B

Repond, J

Yoshida, R

Mattingly, MCK

Pavel, N

Antonioli, P

Bari, G

Basile, M

Bellagamba, L

Boscherini, D

Bruni, A

Bruni, G

Romeo, GC

Cifarelli, L

Cindolo, F

Contin, A

Corradi, M

De Pasquale, S

Giusti, P

Iacobucci, G

Margotti, A

Montanari, A

Nania, R

Palmonari, F

Pesci, A

Rinaldi, L

Sartorelli, G

Zichichi, A

Aghuzumtsyan, G

Bartsch, D

Brock, I

Goers, S

Hartmann, H

Hilger, E

Irrgang, P

Jakob, HP

Kind, O

Meyer, U

Paul, E

Rautenberg, J

Renner, R

Stifutkin, A

Tandler, J

Voss, KC

Wang, M

机构：

[1] Argonne Natl Lab, Argonne, IL 60439 USA

[2] Andrews Univ, Berrien Springs, MI 49104 USA

[3] Humboldt Univ, Inst Phys, Berlin, Germany

[4] Univ Bologna, Bologna, Italy

[5] Ist Nazl Fis Nucl, I-40126 Bologna, Italy

[6] Univ Bonn, Inst Phys, D-5300 Bonn, Germany

[7] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England

[8] Univ Calabria, Dept Phys, I-87036 Cosenza, Italy

[9] Ist Nazl Fis Nucl, Cosenza, Italy

[10] Chonnam Natl Univ, Kwangju 500757, South Korea

[11] Columbia Univ, Nevis Labs, Irvington, NY 10027 USA

[12] Inst Nucl Phys, Krakow, Poland

[13] AGH Univ Sci & Technol, Fac Phys & Nucl Tech, Krakow, Poland

[14] Jagiellonian Univ, Dept Phys, Krakow, Poland

[15] DESY, D-2000 Hamburg, Germany

[16] DESY, Zeuthen, Germany

[17] Univ Florence, Florence, Italy

[18] Ist Nazl Fis Nucl, I-50125 Florence, Italy

[19] Univ Freiburg, Fak Phys, D-7800 Freiburg, Germany

[20] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QW, Lanark, Scotland

[21] Univ Hamburg, Inst Expt Phys, D-2000 Hamburg, Germany

[22] Univ London Imperial Coll Sci Technol & Med, High Energy Nucl Phys Grp, London SW7 2AZ, England

[23] Forschungszentrum Julich, Inst Kernphys, D-5170 Julich, Germany

[24] KEK, Inst Particle & Nucl Studies, Tsukuba, Ibaraki, Japan

[25] Minist Educ & Sci Kazakhstan, Inst Phys & Technol, Alma Ata, Kazakhstan

[26] Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea

[27] Catholic Univ Louvain, Inst Phys Nucl, B-1348 Louvain, Belgium

[28] Univ Autonoma Madrid, Dept Fis Teor, E-28049 Madrid, Spain

[29] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada

[30] Beiji Gakuin Univ, Fac Gen Educ, Yokohama, Kanagawa, Japan

[31] Moscow Engn Phys Inst, Moscow 115409, Russia

[32] Moscow MV Lomonosov State Univ, Inst Nucl Phys, Moscow, Russia

[33] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany

[34] NIKHEF, Amsterdam, Netherlands

[35] Univ Amsterdam, Amsterdam, Netherlands

[36] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA

[37] Univ Oxford, Dept Phys, Oxford, England

[38] Univ Padua, Dipartimento Fis, Padua, Italy

[39] Ist Nazl Fis Nucl, Padua, Italy

[40] Penn State Univ, Dept Phys, University Pk, PA 16802 USA

[41] Polytech Univ, Sagamihara, Kanagawa, Japan

[42] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[43] Ist Nazl Fis Nucl, Rome, Italy

[44] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England

[45] Univ Calif Santa Cruz, Santa Cruz, CA 95064 USA

[46] Ewha Womans Univ, Dept Phys, Seoul 120750, South Korea

[47] Tel Aviv Univ, Raymond & Beverly Sackler Fac Exact Sci, Sch Phys, IL-69978 Tel Aviv, Israel

[48] Tokyo Inst Technol, Dept Phys, Tokyo 152, Japan

[49] Univ Tokyo, Dept Phys, Tokyo 113, Japan

[50] Tokyo Metropolitan Univ, Dept Phys, Tokyo, Japan

来源：

PHYSICS LETTERS B | 2004年 / 599卷 / 3-4期

关键词：

D O I：

10.1016/j.physletb.2004.08.048

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The beauty production cross section for deep inelastic scattering events with at least one hard jet in the Breit frame together with a union has been measured, for photon virtualities Q(2) > 2 GeV2, with the ZEUS detector at HERA using integrated luminosity of 72 pb(-1) The total visible cross section is sigma(bb)- (ep --> e jet muX) = 40.9 +/- 5.7 (stat.) (+6.0)(-4.4) (syst) pb. The next-to- leading order QCD prediction lies about 2.5 standard deviations below the data. The differential cross sections are in general consistent with the NLO QCD predictions; however at low values of Q(2), Bjorken x, and muon transverse momentum, and high values of jet transverse energy and muon pseudorapidity, the prediction is about two standard deviations below the data. (C) 2004 Published by Elsevier B.V.

引用

页码：173 / 189

页数：17

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