SEARCH FOR A Z' AT THE Z RESONANCE

被引：35

作者：

ADRIANI, O ^{[1
]}

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

BETEV, BL

BIASINI, M

BILAND, A

BILEI, GM

BIZZARRI, R

BLAISING, JJ

BOBBINK, GJ

BOCK, R

BOHM, A

BORGIA, B

BOSETTI, M

机构：

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

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

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

[4] CNRS, IN2P3, LAPP, ANNECY LE VIEUX PHYS PARTICLES LAB, F-74941 ANNECY LE VIEUX, FRANCE

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

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

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

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

[9] BOSTON UNIV, BOSTON, MA 02215 USA

[10] NORTHEASTERN UNIV, BOSTON, MA 02115 USA

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

[12] HARVARD UNIV, CAMBRIDGE, MA 02138 USA

[13] MIT, CAMBRIDGE, MA 02139 USA

[14] INFN, SEZ FIRENZE, I-50125 FLORENCE, ITALY

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

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

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

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

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

[20] UNIV LAUSANNE, CH-1000 LAUSANNE 17, SWITZERLAND

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

[22] LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87545 USA

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

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

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

[26] MOSCOW THEORET & EXPTL PHYS INST, MOSCOW, RUSSIA

[27] INFN, SEZ NAPLES, I-80125 NAPLES, ITALY

[28] UNIV NAPLES, I-80138 NAPLES, ITALY

[29] UNIV CYPRUS, DEPT NAT SCI, NICOSIA, CYPRUS

[30] UNIV NYMEGEN, 6525 ED NIJMEGEN, NETHERLANDS

[31] NATL INST NUCL PHYS & HIGH ENERGY PHYS, NIJMEGEN, NETHERLANDS

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

[33] CALTECH, PASADENA, CA 91125 USA

[34] INFN, SEZ PERUGIA, PERUGIA, ITALY

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

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

[37] PRINCETON UNIV, PRINCETON, NJ 08544 USA

[38] INFN, SEZ ROME, ROME, ITALY

[39] UNIV ROMA LA SAPIENZA, I-00185 ROME, ITALY

[40] ST PETERSBURG NUCL PHYS INST, ST PETERSBURG, RUSSIA

[41] UNIV CALIF SAN DIEGO, LA JOLLA, CA 92093 USA

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

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

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

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

[46] UNIV ALABAMA, TUSCALOOSA, AL 35401 USA

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

[48] PAUL SCHERRER INST, CH-5232 VILLAGEN, SWITZERLAND

[49] SWISS FED INST TECHNOL, CH-8093 ZURICH, SWITZERLAND

[50] UNIV HAMBURG, W-2000 HAMBURG 13, GERMANY

来源：

PHYSICS LETTERS B | 1993年 / 306卷 / 1-2期

基金：

美国安德鲁·梅隆基金会;

关键词：

D O I：

10.1016/0370-2693(93)91156-H

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The search for an additional heavy gauge boson Z' is described. The models considered are based on either a superstring-motivated E6 or on a left-right symmetry and assume a minimal Higgs sector. Cross sections and asymmetries measured with the L3 detector in the vicinity of the Z resonance during the 1990 and 1991 running periods are used to determine limits on the Z-Z' gauge boson mixing angle and on the Z' mass. For Z' masses above the direct limits, we obtain the following allowed ranges of the mixing angle, theta(M), at the 95% confidence level: -0.004 less-than-or-equal-to theta(M) less-than-or-equal-to 0.015 for the chi model, -0.003 less-than-or-equal-to theta(M) less-than-or-equal-to 0.020 for the psi model, -0.029 less-than-or-equal-to theta(M) less-than-or-equal-to 0.010 for the eta model, -0.002 less-than-or-equal-to theta(M) less-than-or-equal-to 0.015 for the LR model.

引用

页码：187 / 196

页数：10

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