A search for excited fermions at HERA

被引：31

作者：

Adloff, C ^{[1
]}

Andreev, V

Andrieu, B

Arkadov, V

Astvatsatourov, A

Ayyaz, I

Babaev, A

Bähr, J

Baranov, P

Barrelet, E

Bartel, W

Bassler, U

Bate, P

Beglarian, A

Behnke, O

Beier, C

Belousov, A

Benisch, T

Berger, C

Bernardi, G

Berndt, T

Bizot, JC

Borras, K

Boudry, V

Braunschweig, W

Brisson, V

Bröker, HB

Brown, DP

Brückner, W

Bruel, P

Bruncko, D

Bürger, J

Büsser, FW

Bunyatyan, A

Burkhardt, H

Burrage, A

Buschhorn, G

Campbell, AJ

Cao, J

Carli, T

Caron, S

Chabert, E

Clarke, D

Clerbaux, B

Collard, C

Contreras, JG

Coughlan, JA

Cousinou, MC

Cox, BE

Cozzika, G

机构：

[1] Berg Univ Wuppertal, Fachbereich Phys, Wuppertal, Germany

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

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

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

[5] Univ Instelling Antwerp, Antwerp, Belgium

[6] Free Univ Brussels, Interuniv Inst High Energies, Brussels, Belgium

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

[8] Inst Nucl Phys, Krakow, Poland

[9] Univ Dortmund, Inst Phys, D-4600 Dortmund, Germany

[10] Joint Inst Nucl Res, Dubna, Russia

[11] CEA Saclay, DSM, DAPNIA, F-91191 Gif Sur Yvette, France

[12] DESY, D-2000 Hamburg, Germany

[13] Univ Hamburg, Inst Expt Phys 2, D-2000 Hamburg, Germany

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

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

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

[17] Univ Kiel, Inst Expt & Angew Phys, Kiel, Germany

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

[19] Univ Lancaster, Sch Phys & Chem, Lancaster, England

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

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

[22] Lund Univ, Dept Phys, Lund, Sweden

[23] Univ Manchester, Dept Phys & Astron, Manchester, Lancs, England

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

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

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

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

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

[29] Ecole Polytech, LPNHE, IN2P3, CNRS, Palaiseau, France

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

[31] Univ Paris 07, IN2P3, CNRS, Paris, France

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

[33] Charles Univ Prague, Fac Math & Phys, Prague, Czech Republic

[34] Univ Roma 3, Ist Nazl Fis Nucl, Rome, Italy

[35] Univ Roma 3, Dipartimento Fis, Rome, Italy

[36] Paul Scherrer Inst, Villigen, Switzerland

[37] Berg Univ Wuppertal, Fachbereich Phys, Wuppertal, Germany

[38] Yerevan Phys Inst, Yerevan 375036, Armenia

[39] DESY, Zeuthen, Germany

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

[41] Univ Zurich, Inst Phys, Zurich, Switzerland

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

[43] Ap CINVESTAV, Dept Fis, Yucatan, Mexico

[44] Safarik Univ, Kosice, Slovakia

[45] CERN, Geneva, Switzerland

来源：

EUROPEAN PHYSICAL JOURNAL C | 2000年 / 17卷 / 04期

关键词：

D O I：

10.1007/s100520000503

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

A search for excited fermions f* of the first generation in e(+)p scattering at the collider HERA is presented using H1 data with an integrated luminosity of 37 pb(-1). All electroweak decays of excited fermions, f* --> f gamma fW, fZ are considered and all possible final states resulting from the Z or W hadronic decays or decays into leptons of the first two generations are taken into account. No evidence for f* production is found. Mass dependent exclusion limits on cross-sections and on the ratio of coupling constants to the compositeness scale are derived.

引用

页码：567 / 581

页数：15

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