Search for first-generation leptoquarks at HERA

被引：30

作者：

Abramowicz, H. ^{[1
]}

Abt, I. ^{[37
]}

Adamczyk, L. ^{[15
]}

Adamus, M. ^{[58
]}

Aggarwal, R. ^{[8
]}

Antonelli, S. ^{[4
,5
]}

Antonioli, P. ^{[4
]}

Antonov, A. ^{[35
]}

Arneodo, M. ^{[53
,54
]}

Arslan, O. ^{[6
]}

Aushev, V. ^{[28
,29
]}

Aushev, Y. ^{[29
]}

Bachynska, O. ^{[17
]}

Bamberger, A. ^{[21
]}

Barakbaev, A. N. ^{[27
]}

Barbagli, G. ^{[19
]}

Bari, G. ^{[4
]}

Barreiro, F. ^{[32
]}

Bartosik, N. ^{[17
]}

Bartsch, D. ^{[6
]}

Basile, M. ^{[4
,5
]}

Behnke, O. ^{[17
]}

Behr, J. ^{[17
]}

Behrens, U. ^{[17
]}

Bellagamba, L. ^{[4
]}

Bertolin, A. ^{[42
]}

Bhadra, S. ^{[61
]}

Bindi, M. ^{[4
,5
]}

Blohm, C. ^{[17
]}

Bokhonov, V. ^{[28
]}

Bold, T. ^{[15
]}

Bondarenko, K. ^{[29
]}

Boos, E. G. ^{[27
]}

Borras, K. ^{[17
]}

Boscherini, D. ^{[4
]}

Bot, D. ^{[17
]}

Brock, I. ^{[6
]}

Brownson, E. ^{[60
]}

Brugnera, R. ^{[42
,43
]}

Bruemmer, N. ^{[40
]}

Bruni, A. ^{[4
]}

Bruni, G. ^{[4
]}

Brzozowska, B. ^{[57
]}

Bussey, P. J. ^{[22
]}

Bylsma, B. ^{[40
]}

Caldwell, A. ^{[37
]}

Capua, M. ^{[9
,10
]}

Carlin, R. ^{[42
,43
]}

Catterall, C. D. ^{[61
]}

Chekanov, S. ^{[2
]}

机构：

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

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

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

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

[5] Univ Bologna, Bologna, Italy

[6] Univ Bonn, Inst Phys, Bonn, Germany

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

[8] Panjab Univ, Dept Phys, Chandigarh 160014, India

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

[10] Ist Nazl Fis Nucl, Cosenza, Italy

[11] Chonnam Natl Univ, Inst Universe & Elementary Particles, Kwangju, South Korea

[12] Univ Malaya, Jabatan Fizik, Kuala Lumpur 50603, Malaysia

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

[14] Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, Krakow, Poland

[15] AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, Krakow, Poland

[16] Jagellonian Univ, Dept Phys, Krakow, Poland

[17] Deutsch Elektronen Synchrotron DESY, Hamburg, Germany

[18] Deutsch Elektronen Synchrotron DESY, Zeuthen, Germany

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

[20] Univ Florence, Florence, Italy

[21] Univ Freiburg I Br, Fak Phys, Freiburg, Germany

[22] Univ Glasgow, Sch Phys & Astron, Glasgow, Lanark, Scotland

[23] Univ Aegean, Dept Engn Management & Finance, Chios, Greece

[24] Univ Hamburg, Inst Expt Phys, Hamburg, Germany

[25] Univ London Imperial Coll Sci Technol & Med, High Energy Nucl Phys Grp, London, England

[26] Natl Lab High Energy Phys, KEK, Inst Particle & Nucl Studies, Tsukuba, Ibaraki 305, Japan

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

[28] Natl Acad Sci, Inst Nucl Res, Kiev, Ukraine

[29] Natl Taras Shevchenko Univ Kyiv, Dept Nucl Phys, Kiev, Ukraine

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

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

[32] Univ Autonoma Madrid, Dept Fis Teor, Madrid, Spain

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

[34] Meiji Gakuin Univ, Fac Gen Educ, Yokohama, Kanagawa, Japan

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

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

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

[38] Univ Amsterdam, Amsterdam, Netherlands

[39] NIKHEF, Amsterdam, Netherlands

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

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

[42] Ist Nazl Fis Nucl, Padua, Italy

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

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

[45] Polytech Univ, Tokyo, Japan

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

[47] Ist Nazl Fis Nucl, Rome, Italy

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

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

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

来源：

PHYSICAL REVIEW D | 2012年 / 86卷 / 01期

基金：

俄罗斯基础研究基金会; 加拿大自然科学与工程研究理事会; 以色列科学基金会; 英国科学技术设施理事会; 美国国家科学基金会;

关键词：

GENERATION SCALAR LEPTOQUARKS; SCATTERING CROSS-SECTIONS; PHYSICS EVENT GENERATION; FERMION-PAIR PRODUCTION; PP COLLISIONS; QCD ANALYSIS; ZEUS; DESIGN; CONSTRUCTION; BEAM;

D O I：

10.1103/PhysRevD.86.012005

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A search for first-generation leptoquarks was performed in electron-proton and positron-proton collisions recorded with the ZEUS detector at HERA in 2003-2007 using an integrated luminosity of 366 pb(-1). Final states with an electron and jets or with missing transverse momentum and jets were analyzed, searching for resonances or other deviations from the standard model predictions. No evidence for any leptoquark signal was found. The data were combined with data previously taken at HERA, resulting in a total integrated luminosity of 498 pb(-1). Limits on the Yukawa coupling, lambda, of leptoquarks were set as a function of the leptoquark mass for different leptoquark types within the Buchmuller-Ruckl-Wyler model. Leptoquarks with a coupling lambda = 0.3 are excluded for masses up to 699 GeV.

引用

页数：14

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