HIGH MASS PHOTON PAIRS IN L+L-GAMMA-GAMMA EVENTS AT LEP

被引：42

作者：

ADRIANI, O

AGUILARBENITEZ, M

AHLEN, S

ALCARAZ, J

ALOISIO, A

ALVERSON, G

ALVIGGI, MG

AMBROSI, G

AN, Q

ANDERHUB, H

ANDERSON, AL

ANDREEV, VP

ANTONOV, L

ANTREASYAN, D

ARCE, P

AREFIEV, A

ATAMANCHUK, A

AZEMOON, T

AZIZ, T

BABA, PVKS

BAGNAIA, P

BAKKEN, JA

BAKSAY, L

BALL, RC

BANERJEE, S

BAO, J

BARILLERE, R

BARONE, L

BASCHIROTTO, A

BATTISTON, R

BAY, A

BECATTINI, F

BECKER, U

BEHNER, F

BEHRENS, J

BENCZE, GL

BERDUGO, J

BERGES, P

BERTUCCI, B

BETEY, BL

BIASINI, M

BILAND, A

BILEI, GM

BIZZARRI, R

BLAISING, JJ

BOBBINK, GJ

BOCK, R

BOHM, A

BORGIA, B

BOSETI, M

机构：

[1] UNIV FLORENCE, I-50125 FLORENCE, ITALY

[2] CTR INVEST ENERGET MEDIOAMBIENTALES & TECNOL, E-28040 MADRID, SPAIN

[3] BOSTON UNIV, BOSTON, MA 02215 USA

[4] CERN, EUROPEAN LAB PARTICLE PHYS, CH-1211 GENEVA 23, SWITZERLAND

[5] INFN, SEZ NAPOLI, I-80125 NAPLES, ITALY

[6] NAPLES UNIV, I-80125 NAPLES, ITALY

[7] NORTHEASTERN UNIV, BOSTON, MA 02115 USA

[8] INFN, SEZ PERUGIA, I-06100 PERUGIA, ITALY

[9] UNIV PERUGIA, I-06100 PERUGIA, ITALY

[10] WORLD LAB, FBLJA PROJECT, CH-1211 GENEVA 23, SWITZERLAND

[11] ETH ZURICH, CH-8093 ZURICH, SWITZERLAND

[12] NUCL PHYS INST, ST PETERSBURG, USSR

[13] MIT, CAMBRIDGE, MA 02139 USA

[14] INFN, SEZ BOLOGNA, I-40126 BOLOGNA, ITALY

[15] BULGARIAN ACAD SCI, INST MECHATRON, BU-1113 SOFIA, BULGARIA

[16] INFN, SEZ BOLOGNA, I-40126 BOLOGNA, ITALY

[17] THEORET & EXPTL PHYS INST, MOSCOW 117259, USSR

[18] UNIV MICHIGAN, ANN ARBOR, MI 48109 USA

[19] RHEIN WESTFAL TH AACHEN, INST PHYS 1, W-5100 AACHEN, GERMANY

[20] RHEIN WESTFAL TH AACHEN, INST PHYS 3, W-5100 AACHEN, GERMANY

[21] INFN, SEZ ROMA, I-00185 ROME, ITALY

[22] TATA INST FUNDAMENTAL RES, BOMBAY 400005, INDIA

[23] UNIV ROME LA SAPIENZA, I-00185 ROME, ITALY

[24] PRINCETON UNIV, PRINCETON, NJ 08544 USA

[25] UNIV ALABAMA, TUSCALOOSA, AL 35486 USA

[26] INFN, SEZ MILANO, I-20133 MILAN, ITALY

[27] JOHNS HOPKINS UNIV, BALTIMORE, MD 21218 USA

[28] UNIV GENEVA, CH-1211 GENEVA 4, SWITZERLAND

[29] HUNGARIAN ACAD SCI, CENT RES INST PHYS, H-1525 BUDAPEST 114, HUNGARY

[30] IN2P3, LAB ANNECY VIEUX PHYS PARTICULES, CNRS, F-74941 ANNECY LE VIEUX, FRANCE

[31] NATL INST HIGH ENERGY PHYS, 1009 DB AMSTERDAM, NETHERLANDS

[32] CATHOLIC UNIV NIJMEGEN, 6525 ED NIJMEGEN, NETHERLANDS

[33] NIKHEF NIJMEGEN, 6525 ED NIJMEGEN, NETHERLANDS

[34] UNIV CALIF SAN DIEGO, SAN DIEGO, CA 92182 USA

[35] CARNEGIE MELLON UNIV, PITTSBURGH, PA 15213 USA

[36] LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87544 USA

[37] PURDUE UNIV, W LAFAYETTE, IN 47907 USA

[38] LAWRENCE LIVERMORE NATL LAB, LIVERMORE, CA 94550 USA

[39] UNIV LYON 1, INST PHYS NUCL LYON, IN2P3, CNRS, F-69622 VILLEURBANNE, FRANCE

[40] INST HIGH ENERGY PHYS, BEIJING, PEOPLES R CHINA

[41] CHINESE UNIV SCI & TECHNOL, HEFEI 230029, PEOPLES R CHINA

[42] KOREA ADV INST SCI & TECHNOL, CTR HIGH ENERGY PHYS, TAEJON 305701, SOUTH KOREA

[43] OAK RIDGE NATL LAB, OAK RIDGE, TN 37831 USA

[44] PAUL SCHERRER INST, CH-5232 VILLIGEN, SWITZERLAND

[45] UNIV SANTIAGO, DEPT FIS PARTICULAS ELEMENTALES, E-15706 SANTIAGO, SPAIN

[46] SHANGHAI INST CERAM, SHANGHAI, PEOPLES R CHINA

[47] DESY, INST HOCHENERGIEPHYS, O-1615 ZEUTHEN, GERMANY

[48] UNIV LAUSANNE, CH-1015 LAUSANNE, SWITZERLAND

[49] HARVARD UNIV, CAMBRIDGE, MA 02139 USA

[50] CALTECH, PASADENA, CA 91125 USA

来源：

PHYSICS LETTERS B | 1992年 / 295卷 / 3-4期

基金：

匈牙利科学研究基金会;

关键词：

D O I：

10.1016/0370-2693(92)91576-U

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

From the analysis of the reactions e+e- --> l+l- (ngamma) (l = e,mu, tau) we observe four events, one e+e-gammagamma and three mu +mu - gammagamma, with the invariant mass of the photon pairs close to 60 GeV. These events were selected from a data sample collected in the L3 detector corresponding to 950000 produced Z0's. More data are necessary to ascertain the origin of these events.

引用

页码：337 / 346

页数：10

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