Experimental search for chargino and neutralino production in supersymmetry models with a light gravitino

被引：45

作者：

Abbott, B ^{[1
]}

Abolins, M

Acharya, BS

Adam, I

Adams, DL

Adams, M

Ahn, S

Aihara, H

Alves, GA

Amidi, E

Amos, N

Anderson, EW

Astur, R

Baarmand, MM

Baden, A

Balamurali, V

Balderston, J

Baldin, B

Banerjee, S

Bantly, J

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] Univ Los Andes, Bogota, Colombia

[2] Univ Arizona, Tucson, AZ 85721 USA

[3] Boston Univ, Boston, MA 02215 USA

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

[5] Brown Univ, Providence, RI 02912 USA

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

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

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

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

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

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

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

[13] Univ Delhi, Delhi 110007, India

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

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

[16] Univ Hawaii, Honolulu, HI 96822 USA

[17] Univ Illinois, Chicago, IL 60607 USA

[18] Indiana Univ, Bloomington, IN 47405 USA

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

[20] Korea Univ, Seoul 136701, South Korea

[21] Kyungsung Univ, Pusan 608736, South Korea

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

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

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

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

[26] Moscow State Univ, Moscow, Russia

[27] Univ Nebraska, Lincoln, NE 68588 USA

[28] NYU, New York, NY 10003 USA

[29] Northeastern Univ, Boston, MA 02115 USA

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

[31] Northwestern Univ, Evanston, IL 60208 USA

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

[33] Univ Oklahoma, Norman, OK 73019 USA

[34] Punjab Univ, Chandigarh 160014, India

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

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

[37] Rice Univ, Houston, TX 77005 USA

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

[39] Univ Rochester, Rochester, NY 14627 USA

[40] CE Saclay, CEA, DAPNIA, Serv Phys Particules, Gif Sur Yvette, France

[41] Seoul Natl Univ, Seoul, South Korea

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

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

[44] Univ Texas, Arlington, TX 76019 USA

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

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.80.442

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We search for inclusive high E-T diphoton events with large missing transverse energy in p (p) over bar collisions at root s = 1.8 TeV. Such events are expected from pair production of charginos and neutralinos within the framework of the minimal supersymmetric standard model with a light gravitino. No excess of events is observed. In that model, and assuming gaugino mass unification at the GUT scale, we obtain a 95% C.L. exclusion region in the supersymmetry parameter space and lower mass bounds of 150 GeV/c(2) for the lightest chargino and 77 GeV/c(2) for the lightest neutralino.

引用

页码：442 / 447

页数：6

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