MEASUREMENT OF CHARM PRODUCTION IN 2-PHOTON PROCESSES USING INCLUSIVE LEPTON EVENTS AT TRISTAN

被引：15

作者：

ASO, T

MIYATA, H

SASAKI, T

MIYANO, K

NAKAJIMA, N

OHKUBO, K

OYOSHI, M

SATO, M

SHIRAI, M

TAKASHIMIZU, N

YAMASHITA, Y

ABE, K

FUJII, Y

KURIHARA, Y

LEE, MH

LIU, F

MAKI, A

NOZAKI, T

OMORI, T

SAGAWA, H

SAKAI, Y

SUGIMOTO, Y

TAKAIWA, Y

TERADA, S

KIRK, P

WANG, TJ

ABASHIAN, A

GOTOW, K

PIILONEN, L

CHOI, SK

ROSENFELD, C

ZHENG, LY

BREEDON, RE

KO, W

LANDER, RL

ROWE, J

SMITH, JR

KANDA, S

OLSEN, SL

UENO, K

TANAKA, R

KAJINO, F

BEHARI, S

FUJIMOTO, H

KOBAYASHI, S

MURAKAMI, A

SAHU, SK

YANG, M

MATSUMOTO, S

SCHNETZER, S

机构：

[1] NIHON DENT COLL,NIIGATA 951,JAPAN

[2] KEK,NATL LAB HIGH ENERGY PHYS,IBARAKI,OSAKA 305,JAPAN

[3] LOUISIANA STATE UNIV,BATON ROUGE,LA 70803

[4] INST HIGH ENERGY PHYS,BEIJING 100039,PEOPLES R CHINA

[5] VIRGINIA POLYTECH INST & STATE UNIV,BLACKSBURG,VA 24061

[6] GYEONGSANG NATL UNIV,CHINJU 660701,SOUTH KOREA

[7] UNIV S CAROLINA,COLUMBIA,SC 29208

[8] UNIV CALIF DAVIS,DAVIS,CA 95616

[9] UNIV HAWAII,HONOLULU,HI 96822

[10] KONAN UNIV,KOBE 658,JAPAN

[11] SAGA UNIV,SAGA 840,JAPAN

[12] CHUO UNIV,TOKYO 112,JAPAN

[13] RUTGERS STATE UNIV,PISCATAWAY,NJ 08854

[14] UNIV ROCHESTER,ROCHESTER,NY 14627

[15] KOREA UNIV,SEOUL 136701,SOUTH KOREA

[16] SEOUL NATL UNIV,SEOUL 151742,SOUTH KOREA

[17] KYUNGPOOK NATL UNIV,TAEGU 702701,SOUTH KOREA

[18] NATL TAIWAN UNIV,TAIPEI 10764,TAIWAN

来源：

PHYSICS LETTERS B | 1995年 / 363卷 / 04期

关键词：

D O I：

10.1016/0370-2693(95)01175-0

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Measurements of open charm production in photon-photon collisions made with the AMY detector at TRISTAN are reported. Charmed hadrons were identified by detecting the high momentum muons or electrons from their semileptonic decays. The data sample corresponds to an integrated luminosity of 275 pb(-1) at an average center of mass energy of 58 GeV. Results are presented in the form of cross sections of inclusive leptons from charm for both muons and electrons. The measured cross section is 1.8 standard deviations higher than theoretical predictions based on the direct and photon-gluon fusion process, where the mass of charm quark is assumed to be 1.6 GeV.

引用

页码：249 / 258

页数：10

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