Search for scalar leptoquark pairs decaying to electrons and jets in (p)over-bar-p collisions

被引：56

作者：

Abbott, B

Abolins, M

Acharya, BS

Adam, I

Adams, DL

Adams, M

Ahn, S

Aihara, H

Alves, GA

Amidi, E

Amos, N

Anderson, EW

Astur, R

Baarmand, MM

Baden, A

Balamurali, V

Balderston, J

Baldin, B

Banerjee, S

Bantly, J

Bartlett, JF

Bazizi, K

Belyaev, A

Beri, SB

Bertram, I

Bezzubov, VA

Bhat, PC

Bhatnagar, V

Bhattacharjee, M

Biswas, N

Blazey, G

Blessing, S

Bloom, P

Boehnlein, A

Bojko, NI

Borcherding, F

Boswell, C

Brandt, A

Brock, R

Bross, A

Buchholz, D

Burtovoi, VS

Butler, JM

Carvalho, W

Casey, D

Casilum, Z

CastillaValdez, H

Chakraborty, D

Chang, SM

Chekulaev, SV

机构：

[1] UNIV LOS ANDES,BOGOTA,COLOMBIA

[2] UNIV ARIZONA,TUCSON,AZ 85721

[3] BOSTON UNIV,BOSTON,MA 02215

[4] BROOKHAVEN NATL LAB,UPTON,NY 11973

[5] BROWN UNIV,PROVIDENCE,RI 02912

[6] UNIV BUENOS AIRES,BUENOS AIRES,DF,ARGENTINA

[7] UNIV CALIF DAVIS,DAVIS,CA 95616

[8] UNIV CALIF IRVINE,IRVINE,CA 92697

[9] UNIV CALIF RIVERSIDE,RIVERSIDE,CA 92521

[10] CTR BRASILEIRO PESQUISAS FIS,LAFEX,RIO JANEIRO,BRAZIL

[11] CINVESTAV,MEXICO CITY 10027,DF,MEXICO

[12] COLUMBIA UNIV,NEW YORK,NY 10027

[13] UNIV DELHI,DELHI 110007,INDIA

[14] FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510

[15] FLORIDA STATE UNIV,TALLAHASSEE,FL 32306

[16] UNIV HAWAII,HONOLULU,HI 96822

[17] UNIV ILLINOIS,CHICAGO,IL 60607

[18] INDIANA UNIV,BLOOMINGTON,IN 47405

[19] IOWA STATE UNIV,AMES,IA 50011

[20] KOREA UNIV,SEOUL 136701,SOUTH KOREA

[21] KYUNGSUNG UNIV,PUSAN 608736,SOUTH KOREA

[22] LAWRENCE BERKELEY LAB,BERKELEY,CA 94720

[23] UNIV CALIF BERKELEY,BERKELEY,CA 94720

[24] UNIV MARYLAND,COLLEGE PK,MD 20742

[25] UNIV MICHIGAN,ANN ARBOR,MI 48109

[26] MICHIGAN STATE UNIV,E LANSING,MI 48824

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

[28] UNIV NEBRASKA,LINCOLN,NE 68588

[29] NORTHWESTERN UNIV,BOSTON,MA 02115

[30] NO ILLINOIS UNIV,DE KALB,IL 60115

[31] UNIV NOTRE DAME,NOTRE DAME,IN 46556

[32] UNIV OKLAHOMA,NORMAN,OK 73019

[33] PANJAB UNIV,CHANDIGARH 160014,INDIA

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

[35] PURDUE UNIV,W LAFAYETTE,IN 47907

[36] RICE UNIV,HOUSTON,TX 77005

[37] UNIV ESTADO RIO DE JANEIRO,RIO JANEIRO,BRAZIL

[38] UNIV ROCHESTER,ROCHESTER,NY 14627

[39] CTR ETUD SACLAY,CEA,DAPNIA,SERV PHYS PARTICULES,F-91191 GIF SUR YVETTE,FRANCE

[40] SEOUL NATL UNIV,SEOUL,SOUTH KOREA

[41] SUNY STONY BROOK,STONY BROOK,NY 11794

[42] TATA INST FUNDAMENTAL RES,MUMBAI 400005,INDIA

[43] UNIV TEXAS,ARLINGTON,TX 76019

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

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.79.4321

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have searched for the pair production of first generation scalar leptoquarks in the eejj channel using the full data set (123 pb(-1)) collected with the DO detector at the Fermilab Tevatron during 1992-1996. We observe no candidates with an expected background of approximately 0.4 events. Comparing the experimental 95% confidence level upper limit to theoretical calculations of the cross section with the assumption of a 100% branching fraction of eq, we set a lower limit on the mass of a first generation scalar leptoquark of 225 GeV/c(2). The results of this analysis rule out the interpretation of the excess of high Q(2) events at DESY HERA as leptoquarks which decay exclusively to eq.

引用

页码：4321 / 4326

页数：6

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