Measurement of the angular distribution of electrons from W→eν decays observed in p(p)over-bar collisions at √s=1.8 TeV -: art. no. 072001

被引：0

作者：

Abbott, B ^{[1
]}

Abolins, M

Abramov, V

Acharya, BS

Adams, DL

Adams, M

Alves, GA

Amos, N

Anderson, EW

Baarmand, MM

Babintsev, VV

Babukhadia, L

Baden, A

Baldin, B

Balm, PW

Banerjee, S

Bantly, J

Barberis, E

Baringer, P

Bartlett, JF

Bassler, U

Bean, A

Begel, M

Belyaev, A

Beri, SB

Bernardi, G

Bertram, I

Besson, A

Bezzubov, VA

Bhat, PC

Bhatnagar, V

Bhattacharjee, M

Blazey, G

Blessing, S

Boehnlein, A

Bojko, NI

Borcherding, F

Brandt, A

Breedon, R

Briskin, G

Brock, R

Brooijmans, G

Bross, A

Buchholz, D

Buehler, M

Buescher, V

Burtovoi, VS

Butler, JM

Canelli, F

Carvalho, W

机构：

[1] NYU, New York, NY 10003 USA

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

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

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

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

[6] Univ Los Andes, Bogota, Colombia

[7] Charles Univ Prague, Prague, Czech Republic

[8] Acad Sci Czech Republic, Inst Phys, Prague, Czech Republic

[9] Univ San Francisco Quito, Quito, Ecuador

[10] Univ Grenoble 1, CNRS, IN2P3, Inst Sci Nucl, Grenoble, France

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

[12] Univ Paris 06, LPNHE, Paris, France

[13] Univ Paris 07, CNRS, IN2P3, Paris, France

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

[15] Panjab Univ, Chandigarh 160014, India

[16] Univ Delhi, Delhi 110007, India

[17] Tata Inst Fundamental Res, Mumbai, India

[18] Seoul Natl Univ, Seoul, South Korea

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

[20] FOM, Inst NIKHEF, NL-1098 SJ Amsterdam, Netherlands

[21] Univ Amsterdam, NIKHEF, Amsterdam, Netherlands

[22] Univ Nijmegen, NIKHEF, Nijmegen, Netherlands

[23] Inst Nucl Phys, Krakow, Poland

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

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

[26] Inst High Energy Phys, Protvino, Russia

[27] Univ Lancaster, Lancaster, England

[28] Univ Arizona, Tucson, AZ 85721 USA

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

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

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

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

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

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

[35] Univ Hawaii, Honolulu, HI 96822 USA

[36] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA

[37] Univ Illinois, Chicago, IL 60607 USA

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

[39] Northwestern Univ, Evanston, IL 60208 USA

[40] Indiana Univ, Bloomington, IN 47405 USA

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

[42] Iowa State Univ Sci & Technol, Ames, IA 50011 USA

[43] Univ Kansas, Lawrence, KS 66045 USA

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

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

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

[47] Boston Univ, Boston, MA 02215 USA

[48] Northeastern Univ, Boston, MA 02115 USA

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

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

来源：

PHYSICAL REVIEW D | 2001年 / 63卷 / 07期

关键词：

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the first measurement of the electron angular distribution parameter alpha (2) in W-->e nu events produced in proton-antiproton collisions as a function of the W boson transverse momentum. Our analysis is based on data collected using the D empty set detector during the 1994-1995 Fermilab Tevatron run. We compare our results with next-to-leadiog order perturbative QCD, which predicts an angular distribution of (1 +/- alpha (1) cos theta* + alpha (2) cos(2) theta*), whew theta* is the polar angle of the electron in the Collins-Soper frame. In the presence of QCD corrections, the parameters alpha (1) and alpha (2) become functions of p(T)(W), the W boson transverse momentum. This measurement provides a test of next-to-leading order QCD corrections which are a non negligible contribution to the W boson mass measurement.

引用

页数：12

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