Search for doubly-charged Higgs boson production at HERA

被引：30
作者：
Aktas, A.
Andreev, V.
Anthonis, T.
Antunovic, B.
Aplin, S.
Asmone, A.
Astvatsatourov, A.
Babaev, A.
Backovic, S.
Baghdasaryan, A.
Baranov, P.
Barrelet, E.
Bartel, W.
Baudrand, S.
Baumgartner, S.
Becker, J.
Beckingham, M.
Behnke, O.
Behrendt, O.
Belousov, A.
Berger, N.
Bizot, J. C.
Boenig, M. -O.
Boudry, V.
Bracinik, J.
Brandt, G.
Brisson, V.
Bruncko, D.
Buesser, F. W.
Bunyatyan, A.
Buschhorn, G.
Bystritskaya, L.
Campbell, A. J.
Cassol-Brunner, F.
Cerny, K.
Cerny, V.
Chekelian, V.
Contreras, J. G.
Coughlan, J. A.
Cox, B. E.
Cozzika, G.
Cvach, J.
Dainton, J. B.
Dau, W. D.
Daum, K.
de Boer, Y.
Delcourt, B.
Del Degan, M.
De Roeck, A.
De Wolf, E. A.
机构：
[1] CE Saclay, CEA, DSM, DAPNIA, Gif Sur Yvette, France
[2] Rhein Westfal TH Aachen, Inst Phys 1, D-5100 Aachen, Germany
[3] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England
[4] ULB, VUB, Interuniv Inst High Energies, Antwerp, Belgium
[5] Univ Antwerp, 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-4600 Dortmund, Germany
[9] Joint Inst Nucl Res, Dubna, Russia
[10] DESY, D-2000 Hamburg, Germany
[11] Univ Hamburg, Inst Phys Expt, Hamburg, Germany
[12] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany
[13] Heidelberg Univ, Inst Phys, D-6900 Heidelberg, Germany
[14] Heidelberg Univ, Kirchhoff Inst Phys, D-6900 Heidelberg, Germany
[15] Univ Kiel, Inst Expt & Angew Phys, D-24098 Kiel, Germany
[16] Slovak Acad Sci, Inst Expt Phys, Kosice 04353, Slovakia
[17] Univ Lancaster, Dept Phys, Lancaster LA1 4YW, England
[18] Univ Liverpool, Dept Phys, Liverpool L69 3BX, Merseyside, England
[19] Queen Mary Univ London, London E1 4NS, England
[20] Lund Univ, Dept Phys, S-22100 Lund, Sweden
[21] Univ Manchester, Dept Phys, Manchester M13 9PL, Lancs, England
[22] Univ Mediterranee, CNRS, IN2P3, CPPM, Marseille, France
[23] CINVESTAV, Dept Fis Aplicada, Merida, Yucatan, Mexico
[24] Inst Theoret & Expt Phys, Moscow 117259, Russia
[25] PN Lebedev Phys Inst, Moscow 117924, Russia
[26] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany
[27] Univ Paris 11, CNRS, IN2P3, LAL, F-91405 Orsay, France
[28] Ecole Polytech, CNRS, IN2P3, LLR, Palaiseau, France
[29] Univ Paris 06, LPNHE, Paris, France
[30] Univ Paris 07, CNRS, IN2P3, Paris, France
[31] Univ Montenegro, Fac Sci, Podgorica, Serbia Monteneg
[32] Acad Sci Czech Republ, Inst Phys, Prague, Czech Republic
[33] Charles Univ Prague, Fac Math & Phys, Prague, Czech Republic
[34] Univ Roma Tor Vergata, Dipartimento Fis, I-00173 Rome, Italy
[35] INFN Roma 3, Rome, Italy
[36] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, Sofia, Bulgaria
[37] Paul Scherrer Inst, Villigen, Switzerland
[38] Univ Wuppertal, Fachbereich C, Wuppertal, Germany
[39] Yerevan Phys Inst, Yerevan 375036, Armenia
[40] DESY, Zeuthen, Germany
[41] ETH, Inst Teilchenphys, Zurich, Switzerland
[42] Univ Zurich, Inst Phys, CH-8006 Zurich, Switzerland
[43] Natl Tech Univ Athens, Dept Phys, GR-15773 Zografos, Greece
[44] Univ Wuppertal, Rechenzentrum, Wuppertal, Germany
[45] Safarik Univ, Kosice, Slovakia
[46] CERN, Geneva, Switzerland
[47] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany
[48] Comenius Univ, Bratislava, Slovakia
来源：
PHYSICS LETTERS B | 2006年 / 638卷 / 5-6期
基金：
英国科学技术设施理事会;
关键词：
D O I：
10.1016/j.physletb.2006.05.061
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
A search for the single production of doubly-charged Higgs bosons H-+/-+/- in ep collisions is presented. The signal is searched for via the Higgs decays into a high mass pair of same charge leptons, one of them being an electron. The analysis uses up to 118 pb(-1) of ep data collected by the H1 experiment at HERA. No evidence for doubly-charged Higgs production is observed and mass dependent upper limits are derived on the Yukawa couplings h(el) of the Higgs boson to an electron-lepton pair. Assuming that the doubly-charged Higgs only decays into an electron and a muon via a coupling of electromagnetic strength h(e mu) = root 4 pi alpha(em) similar or equal to 0.3, a lower limit of 141 GeV on the H-+/-+/- mass is obtained at the 95% confidence level. For a doubly-charged Higgs decaying only into an electron and a tau and a coupling h(e tau) similar or equal to 0.3, masses below 112 GeV are ruled out. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：432 / 440
页数：9
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