Search for supersymmetric partners of top and bottom quarks at √s=189 GeV

被引：14

作者：

Abreu, P

Adam, W

Adye, T

Adzic, P

Ajinenko, I

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

Ballestrero, A

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

Benekos, NC

Benvenuti, AC

Berat, C

Berggren, M

Bertrand, D

Besancon, M

Bigi, M

Bilenky, MS

Bizouard, MA

机构：

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

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

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

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

[5] Univ Etat 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, Dipartmento 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] DESY Zeuthen, D-15735 Zeuthen, Germany

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

[19] Acad Sci Czech Republ, Inst Phys, FZU, Div High Energy Phys, CZ-18040 Prague, Czech Republic

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

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

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

[23] Helsinki INst Phys, FI-00014 Helsinki, Finland

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

[25] Univ Karlsruhe, Inst Expt Immunol, DE-76128 Karlsruhe, Germany

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

[27] Stanislaw Staszic Univ Min & Met, PL-30055 Krakow, Poland

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

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

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

[31] Univ Paris 06, CNRS, IN2P3, LPHNE, FR-75252 Paris 05, France

[32] Univ Paris 07, FR-75252 Paris 05, France

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

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

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

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

[37] Ist Nazl Fis Nucl, MILANO, IT-20133 Milan, Italy

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

[39] Ist Nazl Fis Nucl, MILANO, IT-20126 Milan, Italy

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

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

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

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

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

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

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

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

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

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

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

来源：

PHYSICS LETTERS B | 2000年 / 496卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0370-2693(00)01275-2

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Searches for supersymmetric partners of top and bottom quarks are presented using data taken by the DELPHI experiment at LEP in 1997 and 1998. No deviations from standard model expectations are observed in these data sets, which are taken at centre-of-mass energies of 183 GeV and 189 GeV and correspond to integrated luminosities of 54 pb(-1) and 158 pb(-1). These results are used in combination with those obtained by DELPHI at lower centre-of-mass energies to exclude regions in the squark-neutralino mass plane at 95% confidence level. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：59 / 75

页数：17

共 33 条

[1]

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

[2]

Abbiendi G, 2000, EUR PHYS J C, V14, P187, DOI 10.1007/s100520000346

[3] Search for scalar top and scalar bottom quarks at √s=189 GeV at LEP [J].

Abbiendi, G ;

Ackerstaff, K ;

Alexander, G ;

Allison, J ;

Altekamp, N ;

Anderson, KJ ;

Anderson, S ;

Arcelli, S ;

Asai, S ;

Ashby, SF ;

Axen, D ;

Azuelos, G ;

Ball, AH ;

Barberio, E ;

Barlow, RJ ;

Batley, JR ;

Baumann, S ;

Bechtluft, J ;

Behnke, T ;

Bell, KW ;

Bella, G ;

Bellerive, A ;

Bentvelsen, S ;

Bethke, S ;

Betts, S ;

Biebel, O ;

Biguzzi, A ;

Blobel, V ;

Bloodworth, IJ ;

Bock, P ;

Böhme, J ;

Bonacorsi, D ;

Boutemeur, M ;

Braibant, S ;

Bright-Thomas, P ;

Brigliadori, L ;

Brown, RM ;

Burckhart, HJ ;

Capiluppi, P ;

Carnegie, RK ;

Carter, AA ;

Carter, JR ;

Chang, CY ;

Charlton, DG ;

Chrisman, D ;

Ciocca, C ;

Clarke, PEL ;

Clay, E ;

Cohen, I ;

Conboy, JE .

PHYSICS LETTERS B, 1999, 456 (01) :95-106

[4] Double Higgs production at the linear colliders and the probing of the Higgs self-coupling [J].

Boudjema, F ;

Chopin, E .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1996, 73 (01) :85-109

[5] Search for charginos, neutralinos and gravitinos at LEP [J].

Abreu P. ;

Adam W. ;

Adye T. ;

Ajinenko I. ;

Alekseev G.D. ;

Alemany R. ;

Allport P.P. ;

Almehed S. ;

Amaldi U. ;

Amato S. ;

Andersson P. ;

Andreazza A. ;

Antilogus P. ;

Apel W.-D. ;

Arnoud Y. ;

Ǻsman B. ;

Augustin J.-E. ;

Augustinus A. ;

Baillon P. ;

Bambade P. ;

Barbi M. ;

Bardin D.Y. ;

Barker G. ;

Baroncelli A. ;

Barring O. ;

Bates M.J. ;

Battaglia M. ;

Baubillier M. ;

Baudot J. ;

Becks K.-H. ;

Begalli M. ;

Beilliere P. ;

Belokopytov Y. ;

Belous K. ;

Benvenuti A.C. ;

Berat C. ;

Berggren M. ;

Bertini D. ;

Bertrand D. ;

Besancon M. ;

Bianchi F. ;

Bigi M. ;

Bilenky M.S. ;

Billoir P. ;

Bizouard M.-A. ;

Bloch D. ;

Blume M. ;

Bonesini M. ;

Bonivento W. ;

Boonekamp M. .

The European Physical Journal C, 1998, 1 (1-2) :1-20

[6]

Abreu P, 1999, EUR PHYS J C, V6, P385, DOI [10.1007/s100520050350, 10.1007/s100529801043]

[7] 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

[8] Measurement of the partial decay width R(b)(0)=Gamma(b(b)over-bar)/Gamma(had) of the Z with the DELPHI detector at LEP [J].

Abreu, P ;

Adam, W ;

Adye, T ;

Agasi, E ;

Ajinenko, I ;

Aleksan, R ;

Alekseev, GD ;

Alemany, R ;

Allport, PP ;

Almehed, S ;

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 ;

Barbi, M ;

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 ;

Bonesini, M .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1996, 70 (04) :531-547

[9] A precise measurement of the partial decay width ratio Rb0 = Γb(b)over-bar/Γhad [J].

Abreu, P ;

Adam, W ;

Adye, T ;

Adzic, P ;

Albrecht, Z ;

Alderweireld, 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 .

EUROPEAN PHYSICAL JOURNAL C, 1999, 10 (03) :415-442

[10] Searches for scalar quarks in e+e- interactions at √s=189 GeV [J].

Acciarri, M ;

Achard, P ;

Adriani, O ;

Aguilar-Benitez, M ;

Alcaraz, J ;

Alemanni, G ;

Allaby, J ;

Aloisio, A ;

Alviggi, MG ;

Ambrosi, G ;

Anderhub, H ;

Andreev, VP ;

Angelescu, T ;

Anselmo, F ;

Arefiev, A ;

Azemoon, T ;

Aziz, T ;

Bagnaia, P ;

Baksay, L ;

Balandras, A ;

Ball, RC ;

Banerjee, S ;

Barczyk, A ;

Barillère, R ;

Barone, L ;

Bartalini, P ;

Basile, M ;

Battiston, R ;

Bay, A ;

Becattini, F ;

Becker, U ;

Behner, F ;

Bellucci, L ;

Berdugo, J ;

Berges, P ;

Bertucci, B ;

Betev, BL ;

Bhattacharya, S ;

Biasini, M ;

Biland, A ;

Blaising, JJ ;

Blyth, SC ;

Bobbink, GJ ;

Böhm, A ;

Boldizsar, L ;

Borgia, B ;

Bourilkov, D ;

Bourquin, M ;

Braccini, S .

PHYSICS LETTERS B, 1999, 471 (2-3) :308-320

← 1 2 3 4 →