LIMITS ON THE ANOMALOUS ZZ-GAMMA AND Z-GAMMA-GAMMA COUPLINGS IN P(P)OVER-BAR COLLISIONS AT ROOT-S=1.8 TEV

被引：34

作者：

ABACHI, S

ABBOTT, B

ABOLINS, M

ACHARYA, BS

ADAM, I

ADAMS, DL

ADAMS, M

AHN, S

AIHARA, H

ALITTI, J

ALVAREZ, G

ALVES, GA

AMIDI, E

AMOS, N

ANDERSON, EW

ARONSON, SH

ASTUR, R

AVERY, RE

BADEN, A

BALAMURALI, V

BALDERSTON, J

BALDIN, B

BANTLY, J

BARTLETT, JF

BAZIZI, K

BENDICH, J

BERI, SB

BERTRAM, I

BEZZUBOV, VA

BHAT, PC

BHATNAGAR, V

BHATTACHARJEE, M

BISCHOFF, A

BISWAS, N

BLAZEY, G

BLESSING, S

BOEHNLEIN, A

BOJKO, NI

BORCHERDING, F

BORDERS, J

BOSWELL, C

BRANDT, A

BROCK, R

BROSS, A

BUCHHOLZ, D

BURTOVOI, VS

BUTLER, JM

CASEY, D

CASTILLAVALDEZ, H

CHAKRABORTY, D

机构：

[1] UNIV ARIZONA, TUCSON, AZ 85721 USA

[2] BROOKHAVEN NATL LAB, UPTON, NY 11973 USA

[3] BROWN UNIV, PROVIDENCE, RI 02912 USA

[4] UNIV CALIF DAVIS, DAVIS, CA 95616 USA

[5] UNIV CALIF IRVINE, IRVINE, CA 92717 USA

[6] UNIV CALIF RIVERSIDE, RIVERSIDE, CA 92521 USA

[7] CTR BRASILEIRO PESQUISAS FIS, LAFEX, RIO DE JANEIRO, BRAZIL

[8] CINVESTAV IPN, MEXICO CITY, DF, MEXICO

[9] COLUMBIA UNIV, NEW YORK, NY 10027 USA

[10] UNIV DELHI, DELHI 110007, INDIA

[11] UNIV LOS ANDES, BOGOTA, COLOMBIA

[12] FLORIDA STATE UNIV, TALLAHASSEE, FL 32306 USA

[13] UNIV HAWAII, HONOLULU, HI 96822 USA

[14] UNIV ILLINOIS, CHICAGO, IL 60680 USA

[15] INDIANA UNIV, BLOOMINGTON, IN 47405 USA

[16] IOWA STATE UNIV SCI & TECHNOL, AMES, IA 50011 USA

[17] KOREA UNIV, SEOUL, SOUTH KOREA

[18] KYUNGSUNG UNIV, PUSAN, SOUTH KOREA

[19] UNIV CALIF BERKELEY, LAWRENCE BERKELEY LAB, BERKELEY, CA 94720 USA

[20] UNIV MARYLAND, COLLEGE PK, MD 20742 USA

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

[22] MICHIGAN STATE UNIV, E LANSING, MI 48824 USA

[23] MOSCOW MV LOMONOSOV STATE UNIV, MOSCOW, RUSSIA

[24] UNIV NEBRASKA, LINCOLN, NE 68588 USA

[25] NYU, NEW YORK, NY 10003 USA

[26] NORTHEASTERN UNIV, BOSTON, MA 02115 USA

[27] NO ILLINOIS UNIV, DE KALB, IL 60115 USA

[28] NORTHWESTERN UNIV, EVANSTON, IL 60208 USA

[29] UNIV NOTRE DAME, NOTRE DAME, IN 46556 USA

[30] PANJAB UNIV, CHANDIGARH 160014, INDIA

[31] INST HIGH ENERGY PHYS, PROTVINO 142284, RUSSIA

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

[33] RICE UNIV, HOUSTON, TX 77251 USA

[34] UNIV ROCHESTER, ROCHESTER, NY 14627 USA

[35] CENS, CEA,DAPNIA,SERV PHYS PARTICULES, GIF SUR YVETTE, FRANCE

[36] SEOUL NATL UNIV, SEOUL, SOUTH KOREA

[37] SUNY STONY BROOK, STONY BROOK, NY 11794 USA

[38] SUPERCONDUCTING SUPER COLLIDER LAB, DALLAS, TX 75237 USA

[39] TATA INST FUNDAMENTAL RES, BOMBAY 400005, MAHARASHTRA, INDIA

[40] UNIV TEXAS, ARLINGTON, TX 76019 USA

[41] TEXAS A&M UNIV, COLLEGE STN, TX 77843 USA

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.75.1028

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We performed a direct search for the anomalous ZZ gamma and Z gamma gamma couplings by studying p (p) over bar --> ll gamma + X (l = e, mu) events at root s = 1.8 TeV with the DO detector at the Fermilab Tevatron Collider. A fit to the transverse energy spectrum of the photon in the signal events, based on the data set corresponding to an integrated luminosity of 14.3 pb(-1) (13.7 pb(-1)) for the electron (muon) channel, yields the following 95% confidence level limits on the anomalous CP-conserving ZZ gamma couplings: \h(30)(Z)\ < 1.8 (h(40)(Z) = 0) and \h(40)(Z)\ < 0.5 (h(30)(Z) = 0), for a form-factor scale Lambda = 500 GeV. Limits for the Z gamma gamma couplings and CP-violating couplings are also discussed.

引用

页码：1028 / 1033

页数：6

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