STUDY OF ELECTRON-POSITRON COLLISIONS AT THE HIGHEST PETRA ENERGY

被引：29

作者：

BARBER, DP

BECKER, U

BENDA, H

BOEHM, A

BRANSON, JG

BRON, J

BUIKMAN, D

BURGER, J

CHANG, CC

CHEN, HS

CHEN, M

CHENG, CP

CHU, YS

CLARE, R

DUINKER, P

FANG, GY

FESEFELDT, H

FONG, D

FUKUSHIMA, M

GUO, JC

HERTEN, G

HO, MC

HSU, KK

HSU, TT

KADEL, RW

KRENZ, W

LI, J

LI, QZ

LU, M

LUCKEY, D

MA, DA

MA, CM

MASSARO, GGG

MATSUDA, T

NEWMAN, H

PARADISO, J

POSCHMANN, FP

REVOL, JP

ROHDE, M

RYKACZEWSKI, H

SINRAM, K

TANG, HW

TANG, LG

TING, SCC

TUNG, KL

VANNUCCI, F

WANG, XR

WEI, PS

WHITE, M

WU, GH

机构：

[1] DESY,D-2000 HAMBURG 52,FED REP GER

[2] MIT,NUCL SCI LAB,CAMBRIDGE,MA 02139

[3] NATL INST KERNFYS & HOGEENERGIEFYS,SECT H,AMSTERDAM,NETHERLANDS

[4] CHINESE ACAD SCI,INST HIGH ENERGY PHYS,PEKING,PEOPLES R CHINA

来源：

PHYSICS LETTERS B | 1979年 / 85卷 / 04期

关键词：

D O I：

10.1016/0370-2693(79)91296-6

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on the results of the study of e+e- collisions at the highest PETRA energy of √s = 31.57 GeV, using the 4π sr, electromagnetic and calorimetric detector Mark J. Based on 88 hadron events, and an integrated luminosity of 243 nb-1 we obtain R = σ(e+e- → hadrons)/σ(e+e- → μ+μ-) = 4.0 ± 0.5 (statistical) ± 6 (systematic). The R value, the measured thrust distribution and average spherocity show no evidence for the production of new quark flavors. © 1979.

引用

页码：463 / 466

页数：4

共 20 条

[1] SEMI-LEPTONIC DECAY DISTRIBUTIONS FROM THE NEXT HEAVY QUARK
ALI, A
[J]. ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1979, 1 (01): : 25 - 41
[2] ALI A, 1979, DESY7912 REP
[3] ALI A, 1978, DESY7851 REP
[4] ALI A, 1978, DESY7867 REP
[5] MEASUREMENT OF THE RELATIVE TOTAL HADRONIC CROSS-SECTION R AT PETRA
BARBER, D
BECKER, U
BENDA, H
BOEHM, A
BRANSON, JG
BRON, J
BUIKMAN, D
BURGER, J
CHANG, CC
CHEN, M
CHENG, CP
CHU, YS
CLARE, R
DUINKER, P
FESEFELDT, H
FONG, D
FUKUSHIMA, M
HO, MC
HSU, TT
KADEL, R
LUCKEY, D
MA, CM
MASSARO, G
MATSUDA, T
NEWMAN, H
PARADISO, J
REVOL, JP
ROHDE, M
RYKACZEWSKI, H
SINRAM, K
TANG, HW
TING, SCC
TUNG, KL
VANNUCCI, F
WHITE, M
WU, TW
YANG, PC
YU, CC
[J]. PHYSICAL REVIEW LETTERS, 1979, 42 (17) : 1113 - 1117
[6] TEST OF QUANTUM ELECTRODYNAMICS AT S1/2=13 AND 17 GEV
BARBER, D
BECKER, U
BENDA, H
BOEHM, A
BRANSON, JG
BRON, J
BUIKMAN, D
BURGER, J
CHANG, CC
CHEN, M
CHENG, CP
CHU, YS
CLARE, R
DUINKER, P
FESEFELDT, H
FONG, D
FUKUSHIMA, M
HO, MC
HSU, TT
KADEL, R
LUCKEY, D
MA, CM
MASSARO, G
MATSUDA, T
NEWMAN, H
PARADISO, J
REVOL, JP
ROHDE, M
RYKACZEWSKI, H
SINRAM, K
TANG, HW
TING, SCC
TUNG, KL
VANNUCCI, F
WHITE, M
WU, TW
YANG, PC
YU, CC
[J]. PHYSICAL REVIEW LETTERS, 1979, 42 (17) : 1110 - 1113
[7] BARBER DP, 1979, MIT103 LAB NUCL SCI
[8] BARBER DP, UNPUBLISHED
[9] HARD-PHOTON EMISSION IN E+E-REACTIONS
BONNEAU, G
MARTIN, F
[J]. NUCLEAR PHYSICS B, 1971, B 27 (02) : 381 - &
[10] PARAMETRIZATION OF PROPERTIES OF QUARK JETS
FIELD, RD
FEYNMAN, RP
[J]. NUCLEAR PHYSICS B, 1978, 136 (01) : 1 - 76

← 1 2 →