EXPERIMENTAL-STUDY OF B-QUARK JETS IN E+E- ANNIHILATION AT TRISTAN

被引：29

作者：

NAGAI, K

ENOMOTO, R

ABE, T

ADACHI, I

DOSER, M

FUJII, H

FUJII, K

FUJII, T

FUJIMOTO, J

FUJIO, N

FUJIWARA, N

HARIGAE, K

HAYASHII, H

HORI, S

HOWELL, B

IIDA, N

IKEDA, H

ITOH, R

IWASAKI, H

KAJIKAWA, R

KAMAE, T

KATO, S

KATO, Y

KAWABATA, S

KICHIMI, H

KISHIDA, T

KOBAYASHI, M

KOLTICK, D

LEVINE, I

MIYABAYASHI, K

MIYAMOTO, A

MURAMATSU, K

NAGIRA, T

NAKAGAWA, N

NAKAJIMA, M

NAKANO, E

NAKAYAMA, M

NISHIOKA, H

NITOH, O

NOGUCHI, S

OCHIAI, F

OHKURA, M

OHNISHI, T

OKUNO, H

OKUSAWA, T

SAKAI, E

SHIMONAKA, A

SHIMOZAWA, K

SHIRAHASHI, A

SUGIYAMA, A

机构：

[1] NATL LAB HIGH ENERGY PHYS,TSUKUBA,IBARAKI 305,JAPAN

[2] TOKYO UNIV AGR & TECHNOL,DEPT APPL PHYS,TOKYO 184,JAPAN

[3] NAGOYA UNIV,DEPT PHYS,NAGOYA,AICHI 466,JAPAN

[4] UNIV TOKYO,DEPT PHYS,TOKYO 113,JAPAN

[5] NARA WOMENS UNIV,DEPT PHYS,NARA 630,JAPAN

[6] TOKYO INST TECHNOL,DEPT PHYS,TOKYO 152,JAPAN

[7] UNIV TOKYO,INST NUCL STUDY,TOKYO 158,JAPAN

[8] TEZUKAYAMA GAKUIN UNIV,FAC LIBERAL ARTS,NARA 631,JAPAN

[9] OSAKA CITY UNIV,DEPT PHYS,OSAKA 558,JAPAN

[10] PURDUE UNIV,DEPT PHYS,W LAFAYETTE,IN 47907

来源：

PHYSICS LETTERS B | 1992年 / 278卷 / 04期

关键词：

D O I：

10.1016/0370-2693(92)90593-S

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

An experimental study of b-quark jets using high-p(T) electrons was carried out at square-root s = 58 GeV with the TOPAZ detector at the e+e- collider TRISTAN at KEK. The forward-backward charge asymmetry of the b-quark was obtained to be A(bb) = -0.55 +/- 0.27 (stat.) +/- 0.07 (syst.), consistent with the standard model prediction. Also, such jet properties of the b-quark the average charged multiplicity and the rapidity of charged particles were analyzed. In order to purify the b-quark event samples in this analysis, only events with backward-going electrons or forward-going positrons were used. The energy dependence of these jet properties was studied by making comparisons with the results of the DELCO experiment at the PEP collider (square-root s = 29 GeV) at SLAC.

引用

页码：506 / 510

页数：5

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