MEASUREMENT OF THE RATIO R=SIGMA-WBR(W-]MU-UPSILON) SIGMA-ZETA-BR(ZETA-]MU-MU) AND GAMMA-WTOT AT THE CERN PROTON ANTIPROTON COLLIDER

被引：47

作者：

Albajar, C ^{[1
]}

Albrow, MG

Allkofer, OC

Ankoviak, K

Apsimon, R

Aubert, B

Bacci, C

Bartha, S

Bauer, G

Bettini, A

Bezaguet, A

Biddulph, P

Bohn, H

Bohrer, A

Bonino, R

Bos, K

Botlo, M

Brockhausen, D

Buchanan, C

Buschbeck, B

Busetto, G

Caner, A

Casoli, P

Castilla-Valdez, H

Cavanna, F

Cennini, P

Centro, S

Ceradini, F

Ciapetti, G

Cittolin, S

Clayton, E

Cline, D

Colas, J

Conte, R

Coughlan, JA

Dau, D

Daum, D

Della Negra, M

Demoulin, M

Denegri, D

Dibon, H

Diciaccio, A

Hedo, FJD

Dobrzynski, L

Dorenbosch, J

Dowell, JD

Drijard, D

Eggert, K

Eisenhandler, E

Ellis, N

机构：

[1] CERN, CH-1211 GENEVA 23, SWITZERLAND

[2] Rutherford Appleton Lab, Didcot 0X11 0QX, Oxon, ENGLAND

[3] Univ Kiel, Inst Reine & Angew Kernphys, D-2300 Kiel, GERMANY

[4] Univ Calif Los Angeles, Los Angeles, CA 90024 USA

[5] LAPP, F-74019 Annecy Le Vieux, FRANCE

[6] Univ La Sapienza, Dipartimento Fis, I-00185 Rome, ITALY

[7] Boston Univ, Dept Phys, Boston, MA 02215 USA

[8] Dept Phys, I-35131 Padua, ITALY

[9] Ist Nazl Fis Nucl, I-35131 Padua, ITALY

[10] Queen Mary Coll, Dept Phys, London E1 4NS, ENGLAND

[11] Phys Zentrum RWTH, Phys Inst A 3, D-5100 Aachen, GERMANY

[12] NIKHEF H, NL-1009 DB Amsterdam, NETHERLANDS

[13] Osterreich Akad Wissenschaft, Inst Hochenergiesphys, A-1050 Vienna, AUSTRIA

[14] Imperial Coll, London SW7 2AZ, ENGLAND

[15] CEN Saclay, DPHPE SECB, F-91190 Gif Sur Yvette, FRANCE

[16] Univ Birmingham, Dept Phys, Birmingham B15 2TT, W Midlands, ENGLAND

[17] Coll France, Lab Phys Corpusculaire, F-75231 Paris 05, FRANCE

[18] CIEMAT, E-28040 Madrid, SPAIN

[19] MIT, Cambridge, MA 02139 USA

[20] Univ Helsinki, Dept Phys, SF-00170 Helsinki, FINLAND

来源：

PHYSICS LETTERS B | 1991年 / 253卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(91)91760-S

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

An analysis of W and Z boson production at UA1, using 4.66 pb-1 of data from the 1988 and 1989 CERN ppBAR Collider runs at square root of s = 0.63 TeV, yields R = sigma(w)Br(W --> mu-v)/sigma(z)Br(z --> mu-mu) = 10.4(-1.5)(+1.8)(stat.) +/- 0.8(syst). We find R = 9.5(-1.0)(+1.1)(stat. + syst.) when combining all available UA1 data, in both the electron and muon channel, taken in the period 1983-1989. In the framework of the standard model, the value of R is used to infer the total width of the W boson, I(w) (tot) = 2.18(-0.24)(+0.26) (exp.) +/- 0.04 (theory) GeV/c2.

引用

页码：503 / 510

页数：8

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