AN IMPROVED DETERMINATION OF THE RATIO OF W AND Z MASSES AT THE CERN PBARP COLLIDER

被引：128

作者：

ALITTI, J

AMBROSINI, G

ANSARI, R

AUTIERO, D

BAREYRE, P

BERTRAM, IA

BLAYLOCK, G

BONAMY, P

BORER, K

BOURLIAUD, M

BUSKULIC, D

CARBONI, G

CAVALLI, D

CAVASINNI, V

CENCI, P

CHOLLET, JC

CONTA, C

COSTA, G

COSTANTINI, F

COZZI, L

CRAVERO, A

CURATOLO, M

DELLACQUA, A

DELPRETE, T

DEWOLF, RS

DILELLA, L

DUCROS, Y

EGAN, GF

EINSWEILER, KF

ESPOSITO, B

FAYARD, L

FEDERSPIEL, A

FERRARI, R

FRATERNALI, M

FROIDEVAUX, D

FUMAGALLI, G

GAILLARD, JM

GIANOTTI, F

GILDEMEISTER, O

GOSSLING, C

GOGGI, VG

GRUNENDAHL, S

HARA, K

HELLMAN, S

HRIVNAC, J

HUFNAGEL, H

HUGENTOBLER, E

HULTQVIST, K

IACOPINI, E

INCANDELA, J

机构：

[1] UNIV PAVIA,DIPARTIMENTO FIS NUCL & TEOR,I-27100 PAVIA,ITALY

[2] IST NAZL FIS NUCL,PAVIA,ITALY

[3] UNIV PARIS 11,ACCELERATEUR LINEAIRE LAB,F-91405 ORSAY,FRANCE

[4] UNIV PISA,DIPARTIMENTO FIS,I-56100 PISA,ITALY

[5] IST NAZL FIS NUCL,PISA,ITALY

[6] UNIV MELBOURNE,SCH PHYS,PARKVILLE,VIC 3052,AUSTRALIA

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

[8] UNIV BERN,HOCHENERGIEPHYS LAB,CH-3012 BERN,SWITZERLAND

[9] UNIV MILAN,DIPARTIMENTO FIS,I-20133 MILAN,ITALY

[10] IST NAZL FIS NUCL,MILAN,ITALY

[11] UNIV PERUGIA,DIPARTIMENTO FIS,I-06100 PERUGIA,ITALY

[12] IST NAZL FIS NUCL,PERUGIA,ITALY

[13] UNIV CAMBRIDGE,CAVENDISH LAB,CAMBRIDGE CB3 0HE,ENGLAND

[14] UNIV DORTMUND,LEHRSTUHL EXPTL PHYS 4,W-4600 DORTMUND,GERMANY

[15] UNIV HEIDELBERG,INST HOCHENERGIEPHYS,W-6900 HEIDELBERG,GERMANY

[16] SCUOLA NORMALE SUPER PISA,I-56100 PISA,ITALY

来源：

PHYSICS LETTERS B | 1992年 / 276卷 / 03期

基金：

澳大利亚研究理事会;

关键词：

D O I：

10.1016/0370-2693(92)90332-X

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The W and Z bosons masses, m(W) and m(Z), are measured using samples of W --> ev and Z --> e+e- decays observed in ppBAR collisions at square-root s = 630 GeV. The ratio is found to be m(W)/m(Z) = 0.8813 +/- 0.0036 +/- 0.0019. This gives a value sin2 theta(w) = 0.2234 +/- 0.0064 +/- 0.0033, and in combination with precise m(Z) measurements from LEP yields m(W) = 80.35 +/- 0.33 +/- 0.17 GeV. This result is in good agreement with other experiments, and with the standard model for a top quark mass lighter than 250 GeV.

引用

页码：354 / 364

页数：11

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