Investigation of colour reconnection in WW events with the DELPHI detector at LEP-2

被引：14

作者：

Abdallah, J. ^{[1
]}

Abreu, P.

Adam, W.

Adzic, P.

Albrecht, T.

Alemany-Fernandez, R.

Allmendinger, T.

Allport, P. P.

Amaldi, U.

Amapane, N.

Amato, S.

Anashkin, E.

Andreazza, A.

Andringa, S.

Anjos, N.

Antilogus, P.

Apel, W-D.

Arnoud, Y.

Ask, S.

Asman, B.

Augustin, J. E.

Augustinus, A.

Baillon, P.

Ballestrero, A.

Bambade, P.

Barbier, R.

Bardin, D.

Barker, G. J.

Baroncelli, A.

Battaglia, M.

Baubillier, M.

Becks, K-H.

Begalli, M.

Behrmann, A.

Ben-Haim, E.

Benekos, N.

Benvenuti, A.

Berat, C.

Berggren, M.

Berntzon, L.

Bertrand, D.

Besancon, M.

Besson, N.

Bloch, D.

Blom, M.

Bluj, M.

Bonesini, M.

Boonekamp, M.

Booth, P. S. L.

Borisov, G.

机构：

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

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

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

[4] Univ Bergen, Dept Phys, N-5007 Bergen, Norway

[5] Univ Bologna, Dipartimento Fis, I-40126 Bologna, Italy

[6] Ist Nazl Fis Nucl, I-40126 Bologna, Italy

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

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

[9] Coll France, CNRS, Phys Corpusculaire Lab, IN2P3, F-75231 Paris 05, France

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

[11] ULP, CNRS, Inst Rech Subatom, IN2P3, F-67037 Strasbourg, France

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

[13] CAS, Inst Phys, FZU, Div High Energy Phys, Prague 18040 8, Czech Republic

[14] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy

[15] Ist Nazl Fis Nucl, I-16146 Genoa, Italy

[16] Univ Grenoble 1, Inst Sci Nucl, CNRS, IN2P3, F-38026 St Martin Dheres, France

[17] Univ Helsinki, Helsinki Inst Phys, FIN-00014 Helsinki, Finland

[18] Univ Helsinki, Dept Phys Sci, FIN-00014 Helsinki, Finland

[19] Joint Inst Nucl Res Dubna, Moscow 101000, Russia

[20] Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany

[21] Inst Nucl Phys PAN, PL-31142 Krakow, Poland

[22] Stanislaw Staszic Univ Min & Met, Fac Phys & Nucl Tech, PL-30055 Krakow, Poland

[23] Univ Paris 11, CNRS, Accelerateur Lineaire Lab, IN2P3, F-91405 Orsay, France

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

[25] FCUL, IST, LIP, P-1000 Lisbon, Portugal

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

[27] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland

[28] Univ Paris 06, CNRS, LPNHE, IN2P3, F-75252 Paris 05, France

[29] Univ Paris 07, F-75252 Paris 05, France

[30] Lund Univ, Dept Phys, S-22363 Lund, Sweden

[31] Univ Lyon 1, IPNL, CNRS, IN2P3, F-69622 Villeurbanne, France

[32] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy

[33] Ist Nazl Fis Nucl, I-20133 Milan, Italy

[34] Univ Milano Bicocca, Dipartimento Fis, I-20126 Milan, Italy

[35] Ist Nazl Fis Nucl, I-20126 Milan, Italy

[36] Charles Univ Prague, MFF, IPNP, CR-18000 Prague 8, Czech Republic

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

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

[39] Univ Oslo, Dept Phys, N-0316 Oslo, Norway

[40] Univ Oviedo, Dept Fis, E-33007 Oviedo, Spain

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

[42] Univ Padua, Dipartimento Fis, I-35131 Padua, Italy

[43] Ist Nazl Fis Nucl, I-35131 Padua, Italy

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

[45] Univ Roma Tor Vergata, Dipartimento Fis, I-00173 Rome, Italy

[46] Ist Nazl Fis Nucl, I-00173 Rome, Italy

[47] Univ Roma Tor Vergata, Dipartimento Fis, I-00146 Rome, Italy

[48] Ist Nazl Fis Nucl, I-00146 Rome, Italy

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

[50] CSIC UC, Inst Fis Cantabria, Santander 39006, Spain

来源：

EUROPEAN PHYSICAL JOURNAL C | 2007年 / 51卷 / 02期

关键词：

D O I：

10.1140/epjc/s10052-007-0304-9

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：

In the reaction e(+)e(-) -> WW -> (q(1) (q) over bar (2))(q(3)(q) over bar (4)) the usual hadronization models treat the colour singlets q(1)(q) over bar (2) and q(3)(q) over bar (4) coming from two W bosons independently. However, since the. nal state partons may coexist in space and time, cross-talk between the two evolving hadronic systems may be possible during fragmentation through soft gluon exchange. This e. ect is known as colour reconnection. In this article the results of the investigation of colour reconnection e. ects in fully hadronic decays of W pairs in DELPHI at LEP are presented. Two complementary analyses were performed, studying the particle. ow between jets and W mass estimators, with negligible correlation between them, and the results were combined and compared to models. In the framework of the SK-I model, the value for its. parameter most compatible with the data was found to be: (SK)-S-kappa-I = 2.2(-1.3) (+2.5) corresponding to the probability of reconnection P-reco to be in the range 0.31 < P-reco < 0.68 at 68% confidence level with its best value at 0.52.

引用

页码：249 / 269

页数：21

共 65 条

[1]

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

[2] Measurement of the mass and width of the W boson [J].

Abbiendi, G. ;

Ainsley, C. ;

Akesson, P. F. ;

Alexander, G. ;

Anagnostou, G. ;

Anderson, K. J. ;

Asai, S. ;

Axen, D. ;

Bailey, I. ;

Barberio, E. ;

Barillari, T. ;

Barlow, R. J. ;

Batley, R. J. ;

Bechtle, P. ;

Behnke, T. ;

Bell, K. W. ;

Bell, P. J. ;

Bella, G. ;

Bellerive, A. ;

Benelli, C. ;

Bethke, S. ;

Biebel, O. ;

Boeriu, O. ;

Bock, P. ;

Boutemeur, M. ;

Braibant, S. ;

Brown, R. M. ;

Burckhart, H. J. ;

Campana, S. ;

Capiluppi, P. ;

Carnegie, R. K. ;

Carter, A. A. ;

Carter, J. R. ;

Chang, C. Y. ;

Charlton, D. C. ;

Ciocca, C. ;

Csilling, A. ;

Cuffiani, M. ;

Dado, S. ;

De Roeck, A. ;

De Wolf, E. A. ;

Desch, K. ;

Dienes, B. ;

Dubbert, J. ;

Duchovni, E. ;

Duckeck, G. ;

Duerdoth, I. P. ;

Etzion, E. ;

Fabbri, F. ;

Ferrari, P. .

EUROPEAN PHYSICAL JOURNAL C, 2006, 45 (02) :307-335

[3]

Abbiendi G, 2006, EUR PHYS J C, V45, P291, DOI 10.1140/epjc/s2005-02439-x

[4]

Abbiendi G, 2004, EUR PHYS J C, V36, P297, DOI 10.1140/epjc/s2004-01961-7

[5] Intermittency and correlations in hadronic Z0 decays [J].

Abbiendi, G ;

Ackerstaff, K ;

Alexander, G ;

Allison, J ;

Altekamp, N ;

Anderson, KJ ;

Anderson, S ;

Arceljli, 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 .

EUROPEAN PHYSICAL JOURNAL C, 1999, 11 (02) :239-250

[6] Genuine correlations of like-sign particles in hadronic Z0 decays [J].

Abbiendi, G ;

Ainsley, C ;

Åkesson, PF ;

Alexander, G ;

Allison, J ;

Anagnostou, G ;

Anderson, KJ ;

Arcelli, S ;

Asai, S ;

Axen, D ;

Azuelos, G ;

Bailey, I ;

Barberio, E ;

Barlow, RJ ;

Batley, RJ ;

Behnke, T ;

Bell, KW ;

Bell, PJ ;

Bella, G ;

Bellerive, A ;

Benelli, G ;

Bethke, S ;

Biebel, O ;

Bloodworth, IJ ;

Boeriu, O ;

Bock, P ;

Böhme, J ;

Bonacorsi, D ;

Boutemeur, M ;

Braibant, S ;

Brigliadori, L ;

Brown, RM ;

Burckhart, HJ ;

Cammin, J ;

Carnegie, RK ;

Caron, B ;

Carter, AA ;

Carter, JR ;

Chang, CY ;

Charlton, DG ;

Clarke, PEL ;

Clay, E ;

Cohen, I ;

Couchman, J ;

Csilling, A ;

Cuffiani, M ;

Dado, S ;

Dallavalle, GM ;

Dallison, S ;

De Roeck, A .

PHYSICS LETTERS B, 2001, 523 (1-2) :35-52

[7]

Abbiendi G, 2000, EUR PHYS J C, V16, P423, DOI 10.1007/s100520000407

[8] Bose-Einstein correlations in W+W- events at LEP2 [J].

Abdallah, J ;

Abreu, P ;

Adam, W ;

Adzic, P ;

Albrecht, Z ;

Alderweireld, T ;

Fernandez, RA ;

Allmendinger, T ;

Allport, P ;

Amaldi, U ;

Amapane, N ;

Amato, S ;

Anashkin, E ;

Andreazza, A ;

Andringa, S ;

Anjos, N ;

Antilogus, P ;

Apel, WD ;

Arnoud, Y ;

Ask, S ;

Asman, B ;

Augustin, E ;

Augustinus, A ;

Baillon, P ;

Ballestrero, A ;

Bambade, P ;

Barbier, R ;

Bardin, D ;

Barker, G ;

Baroncelli, A ;

Battaglia, M ;

Baubillier, M ;

Becks, KH ;

Begalli, M ;

Behrmann, A ;

Haim, EB ;

Benekos, N ;

Benvenuti, A ;

Berat, C ;

Berggren, M ;

Berntzon, L ;

Bertrand, D ;

Besancon, M ;

Besson, N ;

Bloch, D ;

Blom, M ;

Bluj, M ;

Bonesini, M ;

Boonekamp, M ;

Booth, L .

EUROPEAN PHYSICAL JOURNAL C, 2005, 44 (02) :161-174

[9] Search for charged Higgs bosons at LEP in general two Higgs doublet models [J].