Search for compositeness, leptoquarks and large extra dimensions in eq contact interactions at HERA

被引：49

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

Bertrand-Coremans, G

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

机构：

[1] Rhein Westfal TH Aachen, Inst Phys 1, D-5100 Aachen, 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] Free Univ Brussels, Interuniv Inst High Energies, Brussels, Belgium

[5] Univ Instelling Antwerp, B-2610 Wilrijk, Belgium

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

[7] Inst Phys Nucl, Krakow, Poland

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

[9] Joint Inst Nucl Res, Dubna, Russia

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

[11] DESY, D-2000 Hamburg, Germany

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

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

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

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

[16] Univ Kiel, Inst Expt & Angew Phys, 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] Univ London Queen Mary & Westfield Coll, London E1 4NS, England

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

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

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

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

[25] Max Planck Inst Phys, D-80805 Munich, Germany

[26] Univ Paris Sud, IN2P3, CNRS, LAL, F-91405 Orsay, France

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

[28] Univ Paris 06, LPHHE, Paris, France

[29] Univ Paris 06, LPHHE, Paris, France

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

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

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

[33] INFN Roma 1, Rome, Italy

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

[35] Paul Scherrer Inst, Villigen, Switzerland

[36] Berg Univ Gesamthsch Wuppertal, Fachbereich Phys, Wuppertal, Germany

[37] Yerevan Phys Inst, Yerevan 375036, Armenia

[38] DESY, Zeuthen, Germany

[39] ETH Zurich, Inst Teilchenphys, Zurich, Switzerland

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

来源：

PHYSICS LETTERS B | 2000年 / 479卷 / 04期

关键词：

D O I：

10.1016/S0370-2693(00)00332-4

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The reaction e(+)p --> e(+)X is studied with the H1 detector at HERA. The data cover momentum transfers Q(2) between 200 GeV2 and 30 000 GeV2 and correspond to an integrated luminosity of 35.6 pb(-1). The differential cross section d sigma/dQ(2) is compared to the Standard Model expectation for neutral current scattering and analysed to search for ((e) over bar e)((q) over bar q) contact interactions. No evidence for new phenomena is observed. The results are used to set limits on scales within models of electron-quark compositeness, quark form factors and the exchange of virtual heavy leptoquarks. A search for gravitational effects mediated through the exchange of virtual gravitons which propagate into large extra dimensions is presented. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：358 / 370

页数：13

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