Search for excited electrons at HERA

被引：20

作者：

Adloff, C ^{[1
]}

Andreev, V

Andrieu, B

Anthonis, T

Astvatsatourov, A

Babaev, A

Bähr, J

Baranov, P

Barrelet, E

Bartel, W

Baumgartner, S

Becker, J

Beckingham, M

Beglarian, A

Behnke, O

Belousov, A

Berger, C

Berndt, T

Bizot, JC

Böhme, J

Boudry, V

Braunschweig, W

Brisson, V

Bröker, HB

Brown, DP

Bruncko, D

Büsser, FW

Bunyatyan, A

Burrage, A

Buschhorn, G

Bystritskaya, L

Campbell, AJ

Caron, S

Cassol-Brunner, F

Clarke, D

Collard, C

Contreras, JG

Coppens, YR

Coughlan, JA

Cousinou, MC

Cox, BE

Cozzika, G

Cvach, J

Dainton, JB

Dau, WD

Daum, K

Davidsson, M

Delcourt, B

Delerue, N

Demirchyan, R

机构：

[1] Berg Univ Wuppertal, Fachbereich Phys, D-42097 Wuppertal, Germany

[2] Rhein Westfal TH Aachen, Inst Phys 3, D-5100 Aachen, Germany

[3] Univ Birmingham, Sch Phys & Space Res, Birmingham B15 2TT, W Midlands, England

[4] ULB, VUB, Inter Univ Inst High Energies, Brussels, Belgium

[5] Univ Antwerp, UIA, B-2020 Antwerp, Belgium

[6] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England

[7] Inst Nucl Phys, Krakow, Poland

[8] Univ Dortmund, Inst Phys, D-44221 Dortmund, Germany

[9] Dubna Joint Nucl Res Inst, Dubna 141980, Russia

[10] CEA, CE Saclay, DSM, DAPNIA, Gif Sur Yvette, France

[11] DESY, D-2000 Hamburg, Germany

[12] Univ Hamburg, Inst Phys Expt, Hamburg, Germany

[13] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany

[14] Heidelberg Univ, Inst Phys, D-6900 Heidelberg, Germany

[15] Heidelberg Univ, Kirchhoff Inst Phys, D-6900 Heidelberg, Germany

[16] Univ Kiel, Inst Expt & Angew Phys, D-24098 Kiel, Germany

[17] Slovak Acad Sci, Inst Expt Phys, Kosice 04353, Slovakia

[18] Univ Lancaster, Sch Phys & Chem, Lancaster LA1 4YW, England

[19] Univ Liverpool, Dept Phys, Liverpool L69 3BX, Merseyside, England

[20] Queen Mary Univ London, London E1 4NS, England

[21] Lund Univ, Dept Phys, S-22100 Lund, Sweden

[22] Univ Manchester, Dept Phys, Manchester M13 9PL, Lancs, England

[23] Univ Mediterranee, CNRS, CPPM, IN2P3, Marseille, France

[24] Inst Theoret & Expt Phys, Moscow 117259, Russia

[25] PN Lebedev Phys Inst, Moscow 117924, Russia

[26] Rhein Westfal TH Aachen, Inst Phys 1, D-5100 Aachen, Germany

[27] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany

[28] Univ Paris 11, CNRS, IN2P3, LAL, Orsay, France

[29] Ecole Polytech, CNRS, LPNHE, IN2P3, F-91128 Palaiseau, France

[30] Univ Paris 06, CNRS, IN2P3, LPNHE, Paris, France

[31] Univ Paris 08, CNRS, IN2P3, LPNHE, Paris, France

[32] Acad Sci Czech Republ, Inst Phys, Prague, Czech Republic

[33] Charles Univ Prague, Fac Math & Phys, CR-11636 Prague 1, Czech Republic

[34] Univ Roma Tre, Dipartimento Fis, Rome, Italy

[35] INFN Roma 3, Rome, Italy

[36] Paul Scherrer Inst, Villigen, Switzerland

[37] Yerevan Phys Inst, Yerevan 375036, Armenia

[38] DESY, Zeuthen, Germany

[39] Swiss Fed Inst Technol, Inst Teilchenphys, Zurich, Switzerland

[40] Univ Zurich, Inst Phys, CH-8006 Zurich, Switzerland

[41] Natl Tech Univ Athens, Dept Phys, GR-15773 Athens, Greece

[42] Berg Univ Wuppertal, Rechenzentrum, D-42097 Wuppertal, Germany

[43] Univ Karlsruhe, Inst Expt Kernphys, D-7500 Karlsruhe, Germany

[44] CINVESTAV, Dept Fis Aplicada, Merida, Yucatan, Mexico

[45] Safarik Univ, Kosice, Slovakia

[46] CERN, CH-1211 Geneva 23, Switzerland

[47] CINVESTAV, Dept Fis, Mexico City 14000, DF, Mexico

来源：

PHYSICS LETTERS B | 2002年 / 548卷 / 1-2期

关键词：

D O I：

10.1016/S0370-2693(02)02764-8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A search for excited electron (e*) production is described in which the electroweak decays e* --> egamma, e* --> eZ and e* ---> nuW are considered. The data used correspond to an integrated luminosity of 120 pb(-1) taken in e(+/-)p collisions from 1994 to 2000 with the H1 detector at HERA at centre-of-mass energies of 300 and 318 GeV. No evidence for a signal is found. Mass dependent exclusion limits are derived for the ratio of the couplings to the compositeness scale, f/A. These limits extend the excluded region to higher masses than has been possible in previous direct searches for excited electrons. (C) 2002 Published by Elsevier Science B.V.

引用

页码：35 / 44

页数：10

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