Search for squarks in R-parity violating supersymmetry in ep collisions at HERA

被引：7

作者：

Aaron, F. D. ^{[1
,50
]}

Alexa, C. ^{[1
]}

Andreev, V. ^{[26
]}

Backovic, S. ^{[31
]}

Baghdasaryan, A. ^{[40
]}

Baghdasaryan, S. ^{[40
]}

Barrelet, E. ^{[30
]}

Bartel, W. ^{[12
]}

Begzsuren, K. ^{[37
]}

Belousov, A. ^{[26
]}

Bizot, J. C. ^{[28
]}

Boudry, V. ^{[29
]}

Bozovic-Jelisavcic, I. ^{[3
]}

Bracinik, J. ^{[4
]}

Brandt, G. ^{[12
]}

Brinkmann, M. ^{[12
]}

Brisson, V. ^{[28
]}

Britzger, D. ^{[12
]}

Bruncko, D. ^{[17
]}

Bunyatyan, A. ^{[14
,40
]}

Buschhorn, G. ^{[27
]}

Bystritskaya, L. ^{[25
]}

Campbell, A. J. ^{[12
]}

Cantun Avila, K. B. ^{[23
]}

Ceccopieri, F. ^{[5
,6
]}

Cerny, K. ^{[33
]}

Cerny, V. ^{[17
,48
]}

Chekelian, V. ^{[27
]}

Cholewa, A. ^{[12
]}

Contreras, J. G. ^{[23
]}

Coughlan, J. A. ^{[7
]}

Cvach, J. ^{[32
]}

Dainton, J. B. ^{[19
]}

Daum, K. ^{[39
,45
]}

Delcourt, B. ^{[28
]}

Delvax, J. ^{[5
,6
]}

DeWolf, E. A. ^{[12
]}

Diaconu, C. ^{[22
]}

Dobre, M. ^{[13
,51
]}

Dodonov, V. ^{[14
]}

Dossanov, A. ^{[27
]}

Dubak, A. ^{[27
,31
]}

Eckerlin, G. ^{[12
]}

Egli, S. ^{[38
]}

Eliseev, A. ^{[26
]}

Elsen, E. ^{[12
]}

Favart, L. ^{[5
,6
]}

Fedotov, A. ^{[25
]}

Felst, R. ^{[12
]}

Feltesse, J. ^{[11
,49
]}

机构：

[1] Natl Inst Phys & Nucl Engn NIPNE, Bucharest, Romania

[2] Physikal Inst RWTH, Aachen, Germany

[3] Univ Belgrade, Vinca Inst Nucl Sci, Belgrade 1100, Serbia

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

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

[6] Univ Antwerp, Antwerp, Belgium

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

[8] Inst Nucl Phys, Krakow, Poland

[9] TU Dortmund, Inst Phys, Dortmund, Germany

[10] Joint Inst Nucl Res, Dubna, Russia

[11] CEA, DSM, Irfu CE Saclay, Gif Sur Yvette, France

[12] DESY, D-2000 Hamburg, Germany

[13] Univ Hamburg, Inst ExptPhys, Hamburg, Germany

[14] Max Planck Inst Kernphys, Heidelberg, Germany

[15] Heidelberg Univ, Physikal Inst, Heidelberg, Germany

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

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

[18] Univ Lancaster, Dept Phys, Lancaster, 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, Lund, Sweden

[22] Aix Marseille Univ, CPPM, CNRS, IN2P3, Marseille, France

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

[24] CINVESTAV IPN, Dept Fis, Mexico City, DF, Mexico

[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 11, CNRS, IN2P3, LAL, F-91405 Orsay, France

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

[30] Univ Denis Diderot Paris 7, Univ Paris 06, LPNHE, CNRS,IN2P3, Paris, France

[31] Univ Montenegro, Fac Sci, Podgorica, Montenegro

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

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

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

[35] INFN Roma 3, Rome, Italy

[36] Inst Nucl Energy Res, Sofia, Bulgaria

[37] Mongolian Acad Sci, Inst Phys & Technol, Ulaanbaatar, Mongolia

[38] Paul Scherrer Inst, Villigen, Switzerland

[39] Univ Wuppertal, Fachbereich C, Wuppertal, Germany

[40] Yerevan Phys Inst, Yerevan 375036, Armenia

[41] DESY, Zeuthen, Germany

[42] ETH, Inst Teilchenphys, Zurich, Switzerland

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

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

[45] Univ Wuppertal, Rechenzentrum, Wuppertal, Germany

[46] Safarik Univ, Kosice, Slovakia

[47] CERN, Geneva, Switzerland

[48] Comenius Univ, Bratislava, Slovakia

[49] Univ Hamburg, Hamburg, Germany

[50] Univ Bucharest, Fac Phys, Bucharest, Romania

来源：

EUROPEAN PHYSICAL JOURNAL C | 2011年 / 71卷 / 03期

基金：

瑞士国家科学基金会; 英国科学技术设施理事会; 俄罗斯基础研究基金会;

关键词：

LIQUID ARGON CALORIMETER; DOUBLE-BETA-DECAY; E(+)E(-) COLLISIONS; EVENT GENERATOR; CROSS-SECTIONS; ROOT-S; PARTICLES; SUPERGRAVITY; CALIBRATION; SCATTERING;

D O I：

10.1140/epjc/s10052-011-1572-y

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 squarks in R-parity violating super-symmetry is performed in e(+/-)p collisions at HERA using the H1 detector. The full data sample taken at a centre-of-mass energy root s = 319 GeV is used for the analysis, corresponding to an integrated luminosity of 255 pb(-1) of e(+)p and 183 pb(-1) of e(-)p collision data. The resonant production of squarks via a Yukawa coupling. lambda' is considered, taking into account direct and indirect R-parity violating decay modes. Final states with jets and leptons are investigated. No evidence for squark production is found and mass dependent limits on lambda' are obtained in the framework of the Minimal Supersymmetric Standard Model and in the Minimal Super-gravity Model. In the considered part of the parameter space, for a Yukawa coupling of electromagnetic strength lambda' = 0.3, squarks of all flavours are excluded up to masses of 275 GeV at 95% confidence level, with down-type squarks further excluded up to masses of 290 GeV.

引用

页码：1 / 16

页数：16

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