Search for single top quark production at DO using neural networks

被引：58

作者：

Abazov, VM ^{[1
]}

Abbott, B

Abdesselam, A

Abolins, M

Abramov, V

Acharya, BS

Adams, DL

Adams, M

Ahmed, SN

Alexeev, GD

Alves, GA

Amos, N

Anderson, EW

Arnoud, Y

Baarmand, MM

Babintsev, VV

Babukhadia, L

Bacon, TC

Baden, A

Baldin, B

Balm, PW

Banerjee, S

Barberis, E

Baringer, P

Barreto, J

Bartlett, JF

Bassler, U

Bauer, D

Bean, A

Begel, M

Belyaev, A

Beri, SB

Bernardi, G

Bertram, I

Besson, A

Beuselinck, R

Bezzubov, VA

Bhat, PC

Bhatnagar, V

Bhattacharjee, M

Blazey, G

Blessing, S

Boehnlein, A

Bojko, NI

Boos, EE

Borcherding, F

Bos, K

Brandt, A

Breedon, R

Briskin, G

机构：

[1] Joint Inst Nucl Res, Dubna, Russia

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

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

[4] Inst High Energy Phys, Beijing 100039, Peoples R China

[5] Univ Los Andes, Bogota, Colombia

[6] Charles Univ, Ctr Particle Phys, CR-11636 Prague 1, Czech Republic

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

[8] Univ San Francisco Quito, Quito, Ecuador

[9] Univ Grenoble 1, CNRS, Inst Sci Nucl, IN2P3, F-38041 Grenoble, France

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

[11] Lab Accelerateur Lineaire, CNRS, IN2P3, F-91405 Orsay, France

[12] Univ Paris 06, CNRS, LPNHE, IN2P3, F-75252 Paris 05, France

[13] Univ Paris 07, CNRS, IN2P3, F-75221 Paris 05, France

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

[15] Panjab Univ, Chandigarh 160014, India

[16] Univ Delhi, Delhi 110007, India

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

[18] Seoul Natl Univ, Seoul, South Korea

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

[20] NIKHEF H, FOM Inst, NL-1009 DB Amsterdam, Netherlands

[21] Univ Amsterdam, NIKHEF H, NL-1012 WX Amsterdam, Netherlands

[22] Univ Nijmegen, NIKHEF H, Nijmegen, Netherlands

[23] Inst Nucl Phys, Krakow, Poland

[24] Univ Buenos Aires, RA-1053 Buenos Aires, DF, Argentina

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

[26] Moscow MV Lomonosov State Univ, Moscow 117234, Russia

[27] Inst High Energy Phys, Protvino, Russia

[28] Univ Lancaster, Lancaster LA1 4YW, England

[29] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England

[30] Univ Arizona, Tucson, AZ 85721 USA

[31] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[32] Univ Calif Berkeley, Berkeley, CA 94720 USA

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

[34] Calif State Univ Fresno, Fresno, CA 93740 USA

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

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

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

[38] Univ Hawaii, Honolulu, HI 96822 USA

[39] Fermilab Natl Accelerator Lab, Chicago, IL 60610 USA

[40] Univ Illinois, Chicago, IL 60607 USA

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

[42] Northwestern Univ, Evanston, IL 60208 USA

[43] Indiana Univ, Bloomington, IN 47405 USA

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

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

[46] Univ Kansas, Lawrence, KS 66045 USA

[47] Kansas State Univ, Manhattan, KS 66506 USA

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

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

[50] Boston Univ, Boston, MA 02215 USA

来源：

PHYSICS LETTERS B | 2001年 / 517卷 / 3-4期

基金：

美国国家科学基金会;

关键词：

Tevatron collider; top quark; neural networks;

D O I：

10.1016/S0370-2693(01)01009-7

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a search for electroweak production of single top quarks in approximate to 90 pb(-1) of data collected with the D(null set) detector at the Fermilab Tevatron collider. Using arrays of neural networks to separate signals from backgrounds, we set upper limits on the cross sections of 17 pb for the s-channel process p (p) over bar --> tb + X, and 22 pb for the t-channel process p (p) over bar --> tqb + X, both at the 95% confidence level. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：282 / 294

页数：13

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