A SEARCH FOR A B' QUARK WITH FLAVOR CHANGING NEUTRAL CURRENT DECAY MODES AT TRISTAN

被引：5

作者：

ADACHI, I

AIHARA, H

DOSER, M

ENOMOTO, R

FUJII, H

FUJII, K

FUJII, T

FUJIMOTO, J

FUJIWARA, K

FUJIWARA, N

HAYASHII, H

HIGASHI, S

HOWELL, B

IIDA, N

IMANISHI, A

IKEDA, H

ISHII, T

ITOH, R

IWASAKI, H

IWASHIRO, K

KAJIKAWA, R

KAMAE, T

KATO, S

KATO, Y

KAWABATA, S

KAYAHARA, Y

KICHIMI, H

KISHIDA, T

KOBAYASHI, M

KOLTICK, D

KUSUKI, N

LEVINE, I

MARUYAMA, A

MARUYAMA, K

MATSUSHITA, K

MIYAMOTO, A

MURAMATSU, K

NAGAI, K

NAGIRA, T

NITOH, O

NOGUCHI, S

OCHIAI, F

OKUNO, H

OKUSAWA, T

ONODERA, S

OZAKI, H

SASAYAMA, N

SHIMONAKA, A

SHIMOZAWA, K

SHIRAHASHI, A

机构：

[1] UNIV TOKYO,DEPT PHYS,BUNKYO KU,TOKYO 113,JAPAN

[2] KOBE UNIV,DEPT PHYS,KOBE 657,JAPAN

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

[4] OSAKA CITY UNIV,DEPT PHYS,SUMIYOSHI KU,OSAKA 558,JAPAN

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

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

[7] NATL LAB HIGH ENERGY PHYS,OHO,IBARAKI 305,JAPAN

[8] UNIV TOKYO,INST NUCL STUDY,TANASHI,TOKYO 118,JAPAN

[9] TOKYO UNIV AGR & TECHNOL,DEPT APPL PHYS,SITAGAYA KU,TOKYO,JAPAN

[10] TEZUKAYAMA GAKUIN UNIV,FAC LIBERAL ARTS,TEZUKAYAMA,JAPAN

来源：

PHYSICS LETTERS B | 1990年 / 234卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(90)92028-H

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A search for the b′ quark via flavour changing neutral current (FCNC) decay modes is described. The search was carried out by looking for isolated high energy photon(s) or back to back jet pairs within 4-jet topologies using the data taken by the TOPAZ detector at TRISTAN in the energy range s=50.0-60.8 GeV. As the FCNC decay branching ratio of the b′ is unknown, the experimental limits are given as a function of mass and branching ratio. Assuming the branching ration of the FCNC mode is 100%, a mass limit for b′ is set ≥28.3 GeV/c2 independent of Br(b′→bγ). © 1990.

引用

页码：197 / 201

页数：5

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