Search for charged Higgs bosons in e+e- collisions at √s = 172 GeV

被引：16

作者：

Abreu, P

Adam, W

Adye, T

Adzic, P

Alekseev, GD

Alemany, R

Allport, PP

Almehed, S

Amaldi, U

Amato, S

Andersson, P

Andreazza, A

Antilogus, P

Apel, WD

Arnoud, Y

Asman, B

Augustin, JE

Augustinus, A

Baillon, P

Bambade, P

Barao, F

Barbier, R

Bardin, DY

Barker, G

Baroncelli, A

Barring, O

Bates, MJ

Battaglia, M

Baubillier, M

Baudot, J

Beck, KH

Begalli, M

Beilliere, P

Belokopytov, Y

Benvenuti, AC

Berat, C

Berggren, M

Bertini, D

Bertrand, D

Besancon, M

Bianchi, F

Bigi, M

Bilenky, MS

Billoir, P

Bizouard, MA

Bloch, D

Blume, M

Bonesini, M

Bonivento, W

Boonekamp, M

机构：

[1] FCUL, IST, LIP, PT-1000 Lisbon, Portugal

[2] Iowa State Univ Sci & Technol, Dept Phys & Astron, Ames, IA 50011 USA

[3] Univ Instelling Antwerp, Dept Phys, BE-2610 Antwerp, Belgium

[4] ULB VUB, IIHE, BE-1050 Brussels, Belgium

[5] Univ Mons, Fac Sci, BE-7000 Mons, Belgium

[6] Univ Athens, Phys Lab, GR-10680 Athens, Greece

[7] Univ Bergen, Dept Phys, NO-5007 Bergen, Norway

[8] Univ Bologna, Dipartimento Fis, IT-40126 Bologna, Italy

[9] INFN, IT-40126 Bologna, Italy

[10] Ctr Brasileiro Pesquisas Fis, BR-22290 Rio De Janeiro, Brazil

[11] Pontificia Univ Catolica Rio de Janeiro, Dept Fis, BR-22453 Rio De Janeiro, Brazil

[12] Univ Estado Rio De Janeiro, Inst Fis, Rio De Janeiro, Brazil

[13] Comenius Univ, Fac Math & Phys, SK-84215 Bratislava, Slovakia

[14] Coll France, IN2P3, CNRS, Phys Corpusculaire Lab, FR-75231 Paris 05, France

[15] CERN, CH-1211 Geneva 23, Switzerland

[16] ULP, CNRS, IN2P3, Inst Rech Subatom, FR-67037 Strasbourg, France

[17] NCSR Demokritos, Inst Nucl Phys, GR-15310 Athens, Greece

[18] CAS High Energy Phys Div, Inst Phys, FZU, CZ-18040 Prague 8, Czech Republic

[19] Univ Genoa, Dipartimento Fis, IT-16146 Genoa, Italy

[20] INFN, IT-16146 Genoa, Italy

[21] Univ Grenoble 1, CNRS, IN2P3, Inst Sci Nucl, FR-38026 Grenoble, France

[22] Helsinki Inst Phys, FI-00014 Helsinki, Finland

[23] Joint Inst Nucl Res Dubna, RU-101000 Moscow, Russia

[24] Universitat Karlsruhe, Inst Expt Kernphys, DE-76128 Karlsruhe, Germany

[25] Inst Nucl Phys, PL-30055 Krakow, Poland

[26] Univ Min & Met Krakow, PL-30055 Krakow, Poland

[27] Univ Paris 11, CNRS, IN2P3, Lab Accelerateur Lineaire, FR-91405 Orsay, France

[28] Univ Lancaster, Sch Phys & Chem, Lancaster LA1 4YB, England

[29] FCUL, IST, LIP, PT-1000 Lisbon, Portugal

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

[31] Univ Paris 06&7, CNRS, IN2P3, LPNHE, FR-75252 Paris 05, France

[32] Lund Univ, Dept Phys, SE-22363 Lund, Sweden

[33] Univ Claude Bernard, IPNL, IN2P3, CNRS, FR-69622 Villeurbanne, France

[34] Univ Aix Marseille 2, CPP, IN2P3, CNRS, FR-13288 Marseille 09, France

[35] Univ Milan, Dipartimento Fis, IT-20133 Milan, Italy

[36] INFN, IT-20133 Milan, Italy

[37] Niels Bohr Inst, DK-2100 Copenhagen O, Denmark

[38] Charles Univ Prague, Nucl Ctr MFF, NC, Area MFF, CZ-18000 Prague 8, Czech Republic

[39] NIKHEF H, NL-1009 DB Amsterdam, Netherlands

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

[41] Univ Oslo, Dept Phys, NO-1000 Oslo 3, Norway

[42] Univ Oviedo, Dipartimento Fis, ES-33007 Oviedo, Spain

[43] Univ Oxford, Dept Phys, Oxford OX1 3RH, England

[44] Univ Padua, Dipartimento Fis, IT-35131 Padua, Italy

[45] INFN, IT-35131 Padua, Italy

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

[47] Univ Roma Tor Vergata, Dipartimento Fis, IT-00173 Rome, Italy

[48] INFN, IT-00173 Rome, Italy

[49] CEA Saclay, Serv Phys Particules, DAPNIA, FR-91191 Gif Sur Yvette, France

[50] INFN, Ist Super Sanita, IT-00161 Rome, Italy

来源：

PHYSICS LETTERS B | 1998年 / 420卷 / 1-2期

关键词：

D O I：

10.1016/S0370-2693(97)01543-8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

This paper presents results on charged Higgs boson production, based on LEP data collected at root s = 172 GeV, that complement the previous DELPHI results obtained at centre of mass energies up to 161 GeV. The charged Higgs bosons are assumed to be pair produced and to decay either into a quark pair or into tau nu(tau). The three different possible final states are included in the analysis. Data from rings imaging Cherenkov and microvertex detectors are used to identify the quarks as a cs pair, The number of candidates found is compatible with the background expected from standard processes. Combining the results of the present analysis with those of the previous analysis at lower energies, a new lower mass limit for the charged Higgs boson is set at 54.5 Gev/c(2). (C) 1998 Elsevier Science B.V.

引用

页码：140 / 156

页数：17

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