Search for single-top production in ep collisions at HERA

被引:35
作者
Abramowicz, H. [1 ,37 ]
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 ]
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. [29 ]
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 ]
Chwastowski, J. [14 ,24 ,62 ]
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, 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, 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, Inst Nucl Phys, Moscow, Russia
[37] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany
[38] NIKHEF, Amsterdam, Netherlands
[39] Univ Amsterdam, 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, Sagamihara, Kanagawa, 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
关键词
CHANGING NEUTRAL CURRENTS; MONTE-CARLO GENERATOR; QUARK PRODUCTION; JET FRAGMENTATION; BOSON PRODUCTION; CROSS-SECTIONS; E+E-PHYSICS; T-QUARKS; ROOT-S; ZEUS;
D O I
10.1016/j.physletb.2012.01.025
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
A search for single-top production, ep -> et X, has been performed with the ZEUS detector at HERA using data corresponding to an integrated luminosity of 0.37 fb(-1). No evidence for top production was found, consistent with the expectation from the Standard Model. Limits were computed for single-top production via flavour changing neutral current transitions involving a neutral electroweak vector boson, gamma or Z. The result was combined with a previous ZEUS result yielding a total luminosity of 0.50 fb(-1).
引用
收藏
页码:27 / 36
页数:10
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