A general search for new phenomena in ep scattering at HERA

被引：54

作者：

Aktas, A

Andreev, V

Anthonis, T

Asmone, A

Babaev, A

Backovic, S

Bahr, J

Baranov, P

Barrelet, E

Bartel, W

Baumgartner, S

Becker, J

Beckingham, A

Behnke, O

Behrendt, O

Belousov, A

Berger, C

Berger, N

Berndt, T

Bizot, JC

Böhme, J

Boenig, MO

Boudry, V

Bracinik, J

Brisson, V

Bröker, HB

Brown, DP

Bruncko, D

Büsser, FW

Bunyatyan, A

Buschhorn, G

Bystritskaya, L

Campbell, AJ

Caron, S

Cassol-Brunner, F

Cerny, K

Chekelian, V

Contreras, JG

Coppens, YR

Coughlan, JA

Cox, BE

Cozzika, G

Cvach, J

Dainton, JB

Dau, WD

Daum, K

Delcourt, B

Demirchyan, R

De Roeck, A

Desch, K

机构：

[1] ETH, Inst Teilchenphys, Zurich, Switzerland

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

[3] DESY, Zeuthen, Germany

[4] Yerevan Phys Inst, Yerevan 375036, Armenia

[5] Berg Univ Wuppertal, Fachbereich Phys, Rechenzentrum, Wuppertal, Germany

[6] Paul Scherrer Inst, Villigen, Switzerland

[7] Univ Rome, Dipartimento Fis, Rome, Italy

[8] Ist Nazl Fis Nucl, Rome, Italy

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

[10] Acad Sci Czech Republic, Inst Phys, Prague, Czech Republic

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

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

[13] Ecole Polytech, CNRS, LLR, IN2P3, F-91128 Palaiseau, France

[14] Univ Paris 11, CNRS, LAL, IN2P3, F-91405 Orsay, France

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

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

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

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

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

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

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

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

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

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

[25] Univ Lancaster, Dept Phys, Lancaster, England

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

[27] Univ Kiel, Inst Expt & Angewandte Phys, Kiel, Germany

[28] Heidelberg Univ, Kirchhoff Inst Phys, Heidelberg, Germany

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

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

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

[32] DESY, D-2000 Hamburg, Germany

[33] CEA, DSM, DAPNIA, Gif Sur Yvette, France

[34] Joint Inst Nucl Res, Dubna, Russia

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

[36] Inst Nucl Phys, Krakow, Poland

[37] Rutherford Appleton Lab, Chilton, Didcot, England

[38] Univ Antwerp, B-2020 Antwerp, Belgium

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

[40] Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England

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

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

[43] CERN, Geneva, Switzerland

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

[45] Safarik Univ, Kosice 04154, Slovakia

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

来源：

PHYSICS LETTERS B | 2004年 / 602卷 / 1-2期

关键词：

D O I：

10.1016/j.physletb.2004.09.057

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A model-independent search for deviations from the Standard Model prediction is performed in e(+) p and e(-) p collisions at HERA using H1 data corresponding to an integrated luminosity of 117 pb(-1). For the first time all event topologies involving isolated electrons, photons, muons, neutrinos and jets with high transverse momenta are investigated in a single analysis. Events are assigned to exclusive classes according to their final state. A statistical algorithm is developed to search for deviations from the Standard Model in the distributions of the scalar sum of transverse momenta or invariant mass of final state particles and to quantify their significance. A good agreement with the Standard Model prediction is observed in most of the event classes. The most significant deviation is found for a topology containing an isolated muon, missing transverse momentum and a jet, consistent with a previously reported observation. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：14 / 30

页数：17

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