Search for pair production of scalar bottom quarks in p(p)over-bar collisions at √s = 1.96 TeV

被引：28

作者：

Abazov, V. M. ^{[1
]}

Abbott, B.

Abolins, M.

Acharya, B. S.

Adams, M.

Adams, T.

Agelou, M.

Ahn, S. H.

Ahsan, M.

Alexeev, G. D.

Alkhazov, G.

Alton, A.

Alverson, G.

Alves, G. A.

Anastasoaie, M.

Andeen, T.

Anderson, S.

Andrieu, B.

Anzelc, M. S.

Arnoud, Y.

Arov, M.

Askew, A.

Asman, B.

Jesus, A. C. S. Assis

Atramentov, O.

Autermann, C.

Avila, C.

Ay, C.

Badaud, F.

Baden, A.

Bagby, L.

Baldin, B.

Bandurin, D. V.

Banerjee, P.

Banerjee, S.

Barberis, E.

Bargassa, P.

Baringer, P.

Barnes, C.

Barreto, J.

Bartlett, J. F.

Bassler, U.

Bauer, D.

Bean, A.

Begalli, M.

Begel, M.

Belanger-Champagne, C.

Bellantoni, L.

Bellavance, A.

Benitez, J. A.

机构：

[1] Univ Buenos Aires, Buenos Aires, DF, Argentina

[2] LAFEX, Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil

[3] Univ Estado Rio de Janeiro, Rio De Janeiro, Brazil

[4] Univ Estadual Paulista, Inst Fis Teor, BR-01405 Sao Paulo, Brazil

[5] Univ Alberta, Edmonton, AB, Canada

[6] Simon Fraser Univ, Burnaby, BC V5A 1S6, Canada

[7] York Univ, Toronto, ON M3J 2R7, Canada

[8] McGill Univ, Montreal, PQ, Canada

[9] Inst High Energy Phys, Beijing, Peoples R China

[10] Univ Sci & Technol China, Hefei 230026, Peoples R China

[11] Univ Los Andes, Bogota, Colombia

[12] Charles Univ, Ctr Particle Phys, Prague, Czech Republic

[13] Czech Tech Univ, CR-16635 Prague, Czech Republic

[14] Acad Sci Czech Republ, Inst Phys, Ctr Particle Phys, Inst Phys, Prague, Czech Republic

[15] Univ San Francisco, Quito, Ecuador

[16] Univ Clermont Ferrand, Phys Corpusculaire Lab, IN2P3, CNRS, Clermont Ferrand, France

[17] Univ Grenoble 1, IN2P3, CNRS, Lab Phys Subatom & Cosmol, Grenoble, France

[18] Univ Mediterranee, CPPM, IN2P3, CNRS, Marseille, France

[19] CNRS, IN2P3, Lab Accelerateur Lineaire, Orsay, France

[20] Univ Paris 06, LPNHE, IN2P3, CNRS, Paris, France

[21] Univ Paris 07, Paris, France

[22] CEA Saclay, DAPNIA, Serv Phys Particules, Saclay, France

[23] Univ Strasbourg 1, CNRS, IPHC, IN2P3, Strasbourg, France

[24] Univ Haute Alsace, Mulhouse, France

[25] Univ Lyon 1, CNRS, IN2P3, Inst Phys Nucl, F-69622 Villeurbanne, France

[26] Rhein Westfal TH Aachen, Inst Phys 3, D-5100 Aachen, Germany

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

[28] Univ Freiburg, Inst Phys, Freiburg, Germany

[29] Univ Mainz, Inst Phys, D-6500 Mainz, Germany

[30] Univ Munich, Munich, Germany

[31] Univ Wuppertal, Fachbereich Phys, Wuppertal, Germany

[32] Panjab Univ, Chandigarh 160014, India

[33] Univ Delhi, Delhi 110007, India

[34] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India

[35] Univ Coll Dublin, Dublin 2, Ireland

[36] Korea Univ, Korea Detector Lab, Seoul 136701, South Korea

[37] Sungkyunkwan Univ, Suwon, South Korea

[38] CINVESTAV, Mexico City 14000, DF, Mexico

[39] NIKHEF H, FOM, Amsterdam, Netherlands

[40] Univ Amsterdam, NIKHEF H, Amsterdam, Netherlands

[41] Radboud Univ Nijmegen, NIKHEF H, Nijmegen, Netherlands

[42] Joint Inst Nucl Res Dubna, Dubna, Russia

[43] Inst Theoret & Expt Phys, Moscow 117259, Russia

[44] Moscow MV Lomonosov State Univ, Moscow, Russia

[45] Inst High Energy Phys, Protvino, Russia

[46] Petersburg Nucl Phys Inst, St Petersburg, Russia

[47] Lund Univ, Lund, Sweden

[48] Royal Inst Technol, Stockholm, Sweden

[49] Stockholm Univ, S-10691 Stockholm, Sweden

[50] Uppsala Univ, Uppsala, Sweden

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 17期

基金：

英国科学技术设施理事会;

关键词：

D O I：

10.1103/PhysRevLett.97.171806

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A search for direct production of scalar bottom quarks ((b) over bar) is performed with 310 pb(-1) of data collected by the D0 experiment in p (p) over bar collisions at root s = 1.96 TeV at the Fermilab Tevatron Collider. The topology analyzed consists of two b jets and an imbalance in transverse momentum due to undetected neutralinos (chi(0)(1)), with chi(0)(1) assumed to be the lightest supersymmetric particle. We find the data consistent with standard model expectations, and set a 95% C.L. exclusion domain in the (m(b), m(chi 1)(0)) mass plane, improving significantly upon the results from run I of the Tevatron.

引用

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