Search for heavy stable and long-lived particles in e+e- collisions at √s=189 GeV

被引：29

作者：

Abreu, P

Adam, W

Adye, T

Adzic, P

Albrecht, Z

Alderweireld, T

Alekseev, GD

Alemany, R

Allmendinger, T

Allport, PP

Almehed, S

Amaldi, U

Amapane, N

Amato, S

Anassontzis, EG

Andersson, P

Andreazza, A

Andringa, S

Antilogus, P

Apel, WD

Arnoud, Y

Åsman, B

Augustin, JE

Augustinus, A

Baillon, P

Bambade, P

Barao, F

Barbiellini, G

Barbier, R

Bardin, DY

Barker, G

Baroncelli, A

Battaglia, M

Baubillier, M

Becks, KH

Begalli, M

Behrmann, A

Beilliere, P

Belokopytov, Y

Belous, K

Benekos, NC

Benvenuti, AFC

Berat, C

Berggren, M

Bertrand, D

Besancon, M

Bigi, M

Bilenky, MS

Bizouard, MA

Bloch, D

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, B-2610 Antwerp, Belgium

[4] Free Univ Brussels, IIHE, B-1050 Brussels, Belgium

[5] Univ Mons, Fac Sci, B-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] Ist Nazl Fis Nucl, 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, Phys Corpusculaire Lab, CNRS, IN2P3, 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] Acad Sci Czech Republic, Inst Phys, FZU, Div High Energy Phys, CZ-18040 Prague 8, Czech Republic

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

[20] Ist Nazl Fis Nucl, IT-16146 Genoa, Italy

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

[22] HIP, FI-00014 Helsinki, Finland

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

[24] Univ 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, Accelerateur Lineaire Lab, CNRS, IN2P3, FR-91405 Orsay, France

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

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

[30] Univ Paris 06, CNRS, IN2P3, LPNHE, FR-75252 Paris 05, France

[31] Univ Paris 07, CNRS, IN2P3, LPNHE, FR-75252 Paris 05, France

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

[33] Univ Lyon 1, IPNL, CNRS, IN2P3, FR-69622 Villeurbanne, France

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

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

[36] INFN MILANO, IT-20133 Milan, Italy

[37] Univ Milano Bicocca, Dipartimento Fis, IT-20126 Milan, Italy

[38] INFN MILANO, IT-20126 Milan, Italy

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

[40] Charles Univ Prague, MFF, IPNP, CZ-18000 Prague 8, Czech Republic

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

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

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

[44] Univ Oviedo, Dept Fis, ES-33007 Oviedo, Spain

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

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

[47] Ist Nazl Fis Nucl, IT-35131 Padua, Italy

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

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

[50] Ist Nazl Fis Nucl, IT-00173 Rome, Italy

来源：

PHYSICS LETTERS B | 2000年 / 478卷 / 1-3期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0370-2693(00)00265-3

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A search for stable and long-lived heavy charged particles was performed using the data taken by the DELPHI experiment at an energy of 189 GeV. The Cherenkov light detected in the Ring Imaging Cherenkov Detector and the ionisation loss measured in the Time Projection Chamber were used to identify heavy particles passing through the detector. No evidence for the production of such particles has been found, therefore exclusion limits at 95% confidence level were derived on the masses of left and right handed smuons and staus. The results were combined with previous DELPHI searches in this channel. Including previous DELPHI results, masses of left (right) handed stable smuons and staus can be excluded between 2 GeV/c(2) and 88 (87.5) GeV/c(2) at 95% CL. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：65 / 72

页数：8

共 11 条

[1]

Aarnio P, 1991, NUCL INSTRUM METH A, V303, P233

[2] Performance of the DELPHI detector [J].

Abreu, P ;

Adam, W ;

Adye, T ;

Agasi, E ;

Ajinenko, I ;

Aleksan, R ;

Alekseev, GD ;

Alemany, R ;

Allport, PP ;

Almehed, S ;

Alvsvaag, SJ ;

Amaldi, U ;

Amato, S ;

Andreazza, A ;

Andrieux, ML ;

Antilogus, P ;

Apel, WD ;

Arnoud, Y ;

Asman, B ;

Augustin, JE ;

Augustinus, A ;

Baillon, P ;

Bambade, P ;

Barao, F ;

Barate, R ;

Barbiellini, G ;

Bardin, DY ;

Baroncelli, A ;

Barring, O ;

Barrio, JA ;

Bartl, W ;

Bates, MJ ;

Battaglia, M ;

Baubillier, M ;

Baudot, J ;

Becks, KH ;

Begalli, M ;

Beilliere, P ;

Belokopytov, Y ;

Benvenuti, AC ;

Berggren, M ;

Bertrand, D ;

Bianchi, F ;

Bigi, M ;

Bilenky, MS ;

Billoir, P ;

Bloch, D ;

Blume, M ;

Blyth, S ;

Bolognese, T .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1996, 378 (1-2) :57-100

[3] A search for heavy stable and long-lived squarks and sleptons in e+e- collisions at energies from 130 to 183 GeV [J].

Abreu, P ;

Adam, W ;

Adye, T ;

Adzic, P ;

Aldeweireld, T ;

Alekseev, GD ;

Alemany, R ;

Allmendinger, T ;

Allport, PP ;

Almehed, S ;

Amaldi, U ;

Amato, S ;

Anassontzis, EG ;

Andersson, P ;

Andreazza, A ;

Andringa, S ;

Antilogus, P ;

Apel, WD ;

Arnoud, Y ;

Åsman, B ;

Augustin, JE ;

Augustinus, A ;

Baillon, P ;

Bambade, P ;

Barao, F ;

Barbiellini, G ;

Barbier, R ;

Bardin, DY ;

Barker, G ;

Baroncelli, A ;

Battaglia, M ;

Baubillier, M ;

Becks, KH ;

Begalli, M ;

Beilliere, P ;

Belokopytov, Y ;

Belous, K ;

Benvenuti, AC ;

Berat, C ;

Berggren, M ;

Bertini, D ;

Bertrand, D ;

Besancon, M ;

Bianchi, F ;

Bigi, M ;

Bilenky, MS ;

Bizouard, MA ;

Bloch, D ;

Blom, HM ;

Bonesini, M .

PHYSICS LETTERS B, 1998, 444 (3-4) :491-502

[4] Particle identification algorithms for the DELPHI RICH detector [J].

Adam, W ;

Baillon, P ;

Battaglia, M ;

Bourdarios, C ;

Dracos, M ;

Hahn, F ;

Haider, S ;

Kluit, PM .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1996, 371 (1-2) :240-242

[5] THE RING IMAGING CHERENKOV DETECTOR OF DELPHI [J].

ADAM, W ;

ANASSONTZIS, EG ;

ALBRECHT, E ;

AMBEC, I ;

VANAPELDOORN, G ;

ARNOUD, Y ;

AUBRET, C ;

AUGUSTINUS, A ;

BAILLON, P ;

BARNOUX, C ;

BATTAGLIA, M ;

BERGGREN, M ;

BLOCH, D ;

BOTNER, O ;

BOURDARIOS, C ;

BRUMMER, N ;

BRUNET, JM ;

BUDZIAK, AP ;

BUYS, A ;

CALOBA, LP ;

CARECCHIO, P ;

CARRIE, P ;

CAVALLI, P ;

CERESETO, R ;

CERUTTI, G ;

CHEVRY, M ;

CHRISTOPHEL, E ;

DAHLJENSEN, E ;

DALMAGNE, B ;

DAM, P ;

VANDAM, P ;

DAMGAARD, G ;

DAVENPORT, M ;

DOLBEAU, J ;

DRACOS, M ;

DRIS, M ;

DEKONING, N ;

DELAVEGA, AS ;

DIMITRIOU, N ;

EEK, LO ;

EKELOF, T ;

ERIKSON, J ;

ENGEL, JP ;

EVERS, G ;

FASSOULIOTIS, D ;

FILIPPAS, TA ;

FLOREK, A ;

FLOREK, B ;

FOKITIS, E ;

FONTANELLI, F .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1994, 343 (01) :68-73

[6] Experimental signatures of low energy gauge-mediated supersymmetry breaking [J].

Dimopoulos, S ;

Dine, M ;

Raby, S ;

Thomas, S .

PHYSICAL REVIEW LETTERS, 1996, 76 (19) :3494-3497

[7] Phenomenological implications of low energy supersymmetry breaking [J].

Dimopoulos, S ;

Dine, M ;

Raby, S ;

Thomas, S ;

Wells, JD .

NUCLEAR PHYSICS B, 1997, :38-42

[8]

Dreiner H.D., HEPPH9707435

[9]

GIUDICE GF, HEPPH9801271

[10] SUSYGEN 2.2 -: A Monte Carlo event generator for MSSM sparticle production at e+e- colliders [J].

Katsanevas, S ;

Morawitz, P .

COMPUTER PHYSICS COMMUNICATIONS, 1998, 112 (2-3) :227-269

← 1 2 →