Search for first generation scalar leptoquark pairs in p(p)over-bar collisions at √s=1.8 TeV

被引：69

作者：

Abbott, B ^{[1
]}

Abolins, M

Acharya, BS

Adam, I

Adams, DL

Adams, M

Ahn, S

Aihara, H

Alves, GA

Amos, N

Anderson, EW

Astur, R

Baarmand, MM

Baden, A

Balamurali, V

Balderston, J

Baldin, B

Banerjee, S

Bantly, J

Barberis, E

Bartlett, JF

Bazizi, K

Belyaev, A

Beri, SB

Bertram, I

Bezzubov, VA

Bhat, PC

Bhatnagar, V

Bhattacharjee, M

Biswas, N

Blazey, G

Blessing, S

Bloom, P

Boehnlein, A

Bojko, NI

Borcherding, F

Boswell, C

Brandt, A

Brock, R

Bross, A

Buchholz, D

Burtovoi, VS

Butler, JM

Carvalho, W

Casey, D

Casilum, Z

Castilla-Valdez, H

Chakraborty, D

Chang, SM

Chekulaev, SV

机构：

[1] NYU, New York, NY 10003 USA

[2] Univ Los Andes, Bogota, Colombia

[3] Univ Arizona, Tucson, AZ 85721 USA

[4] Boston Univ, Boston, MA 02215 USA

[5] Brookhaven Natl Lab, Upton, NY 11973 USA

[6] Brown Univ, Providence, RI 02912 USA

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

[8] Univ Calif Davis, Davis, CA 95616 USA

[9] Univ Calif Irvine, Irvine, CA 92697 USA

[10] Univ Calif Riverside, Riverside, CA 92521 USA

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

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

[13] Columbia Univ, New York, NY 10027 USA

[14] Univ Delhi, Delhi 110007, India

[15] Fermi Natl Accelerator Lab, Batavia, IL 60510 USA

[16] Florida State Univ, Tallahassee, FL 32306 USA

[17] Univ Hawaii, Honolulu, HI 96822 USA

[18] Univ Illinois, Chicago, IL 60607 USA

[19] Indiana Univ, Bloomington, IN 47405 USA

[20] Iowa State Univ, Ames, IA 50011 USA

[21] Korea Univ, Seoul 136701, South Korea

[22] Kyungsung Univ, Pusan 608736, South Korea

[23] Inst Nucl Phys, Krakow, Poland

[24] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

[25] Louisiana Tech Univ, Ruston, LA 71272 USA

[26] Univ Maryland, College Pk, MD 20742 USA

[27] Univ Michigan, Ann Arbor, MI 48109 USA

[28] Michigan State Univ, E Lansing, MI 48824 USA

[29] Moscow State Univ, Moscow, Russia

[30] Univ Nebraska, Lincoln, NE 68588 USA

[31] Northeastern Univ, Boston, MA 02115 USA

[32] No Illinois Univ, De Kalb, IL 60115 USA

[33] Northwestern Univ, Evanston, IL 60208 USA

[34] Univ Notre Dame, Notre Dame, IN 46556 USA

[35] Univ Oklahoma, Norman, OK 73019 USA

[36] Panjab Univ, Chandigarh 160014, India

[37] Protvino High Energy Phys Inst, Protvino 142284, Russia

[38] Purdue Univ, W Lafayette, IN 47907 USA

[39] Rice Univ, Houston, TX 77005 USA

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

[41] Univ Rochester, Rochester, NY 14627 USA

[42] Ctr Etud Saclay, Serv Phys Particules, DAPNIA, CEA, F-91191 Gif Sur Yvette, France

[43] Seoul Natl Univ, Seoul, South Korea

[44] SUNY Stony Brook, Stony Brook, NY 11794 USA

[45] Tata Inst Fundamental Res, Colaba 400005, Mumbai, India

[46] Univ Texas, Arlington, TX 76019 USA

[47] Texas A&M Univ, College Stn, TX 77843 USA

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.80.2051

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have searched for first generation scalar leptoquark (LQ) pairs in the e nu + jets channel using <p(p)over bar> collider data (integral L dt approximate to 115 pb(-1)) collected by the D0 experiment at the Fermilab Tevatron during 1992-1996. The analysis yields no candidate events. We combine the results with those from the ee + jets and nu nu + jets channels to obtain 95% confidence level (C.L.) upper limits on the LQ pair production cross section as a function of mass and of beta the branching fraction to a charged lepton. Comparing with the next-to-leading order theory, we set 95% C.L. lower limits on the LQ mass of 225, 204, and 79 GeV/c(2) for beta = 1, 1/2, and 0, respectively.

引用

页码：2051 / 2056

页数：6

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