A measurement of the rate of charm production in W decays

被引:7
作者
Abbiendi, G [1 ]
Ackerstaff, K
Ainsley, C
Åkesson, PF
Alexander, G
Allison, J
Anderson, KJ
Arcelli, S
Asai, S
Ashby, SF
Axen, D
Azuelos, G
Bailey, I
Ball, AH
Barberio, E
Barlow, RJ
Baumann, S
Behnke, T
Bell, KW
Bella, G
Bellerive, A
Benelli, G
Bentvelsen, S
Bethke, S
Biebel, O
Bloodworth, IJ
Boeriu, O
Bock, P
Böhme, J
Bonacorsi, D
Boutemeur, M
Braibant, S
Bright-Thomas, P
Brigliadori, L
Brown, RM
Burckhart, HJ
Cammin, J
Capiluppi, P
Carnegie, RK
Carter, AA
Carter, JR
Chang, CY
Charlton, DG
Clarke, PEL
Clay, E
Cohen, I
Cooke, OC
Couchman, J
Couyoumtzelis, C
Coxe, RL
机构
[1] Univ Bologna, Dipartimento Fis, I-40126 Bologna, Italy
[2] Ist Nazl Fis Nucl, I-40126 Bologna, Italy
[3] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England
[4] Univ Bonn, Inst Phys, D-53115 Bonn, Germany
[5] Univ Calif Riverside, Dept Phys, Riverside, CA 92521 USA
[6] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England
[7] Carleton Univ, Dept Phys, Ottawa Carleton Inst Phys, Ottawa, ON K1S 5B6, Canada
[8] Carleton Univ, Ctr Res Particle Phys, Ottawa, ON K1S 5B6, Canada
[9] CERN, European Org Nucl Res, CH-1211 Geneva 23, Switzerland
[10] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA
[11] Univ Chicago, Dept Phys, Chicago, IL 60637 USA
[12] Univ Freiburg, Fak Phys, D-79104 Freiburg, Germany
[13] Univ Heidelberg, Inst Phys, D-69120 Heidelberg, Germany
[14] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA
[15] Queen Mary Univ London, London E1 4NS, England
[16] Tech Hsch Aachen, Inst Phys 3, D-52056 Aachen, Germany
[17] UCL, London WC1E 6BT, England
[18] Univ Manchester, Schuster Lab, Dept Phys, Manchester M13 9PL, Lancs, England
[19] Univ Maryland, Dept Phys, College Pk, MD 20742 USA
[20] Univ Montreal, Phys Nucl Lab, Montreal, PQ H3C 3J7, Canada
[21] Univ Oregon, Dept Phys, Eugene, OR 97403 USA
[22] Rutherford Appleton Lab, CLRC, Didcot OX11 0QX, Oxon, England
[23] Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel
[24] Tel Aviv Univ, Dept Phys & Astron, IL-69978 Tel Aviv, Israel
[25] Univ Tokyo, Int Ctr Elementary Particle Phys, Tokyo 1130033, Japan
[26] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan
[27] Kobe Univ, Kobe, Hyogo 6578501, Japan
[28] Weizmann Inst Sci, Particle Phys Dept, IL-76100 Rehovot, Israel
[29] Univ Hamburg, DESY, Inst Expt Phys 2, D-22607 Hamburg, Germany
[30] Univ Victoria, Dept Phys, Victoria, BC V8W 3P6, Canada
[31] Univ British Columbia, Dept Phys, Vancouver, BC V6T 1Z1, Canada
[32] Univ Alberta, Dept Phys, Edmonton, AB T6G 2J1, Canada
[33] Res Inst Particle & Nucl Phys, H-1525 Budapest, Hungary
[34] Inst Nucl Res, H-4001 Debrecen, Hungary
[35] Univ Munich, Sekt Phys, D-85748 Garching, Germany
[36] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany
[37] TRIUMF, Vancouver, BC V6T 2A3, Canada
[38] Inst Nucl Res, H-4001 Debrecen, Hungary
[39] Stanislaw Staszic Univ Min & Met, PL-30059 Krakow, Poland
[40] Univ Debrecen, Dept Expt Phys, Debrecen, Hungary
[41] Max Planck Inst, Munich, Germany
[42] Res Inst Particle & Nucl Phys, Budapest, Hungary
[43] Univ Calif Riverside, High Energy Phys Grp, Riverside, CA 92521 USA
[44] CERN, Div EP, CH-1211 Geneva 23, Switzerland
基金
以色列科学基金会; 美国国家科学基金会; 加拿大自然科学与工程研究理事会; 日本学术振兴会;
关键词
D O I
10.1016/S0370-2693(00)00971-0
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Using data recorded at centre-of-mass energies around 183 and 189 GeV with the OPAL detector at LEP, the fundamental coupling of the charm quark to the W boson has been studied. The ratio R(c)(W) = Gamma (W --> cX)/Gamma(W --> hadrons) has been measured from jet properties, lifetime information, and leptons produced in charm decays. A value compatible with the Standard Model expectation of 0.5 is obtained: R(c)(W) = 0.481 +/- 0.042 (stat.) +/- 0.032(syst.). By combining this result with measurements of the W boson total width and hadronic branching ratio, the magnitude of the CKM matrix element IV,,I is determined to be /V(cs)/ = 0.969 +/- 0.058. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:71 / 86
页数:16
相关论文
共 41 条
[1]   W-BOSON AND Z-BOSON PRODUCTION IN P(P)OVER-BAR COLLISIONS AT ROOT-S=1.8 TEV [J].
ABACHI, S ;
ABBOTT, B ;
ABOLINS, M ;
ACHARYA, BS ;
ADAM, I ;
ADAMS, DL ;
ADAMS, M ;
AHN, S ;
AIHARA, H ;
ALITTI, J ;
ALVAREZ, G ;
ALVES, GA ;
AMIDI, E ;
AMOS, N ;
ANDERSON, EW ;
ARONSON, SH ;
ASTUR, R ;
AVERY, RE ;
BADEN, A ;
BALAMURALI, V ;
BALDERSTON, J ;
BALDIN, B ;
BANTLY, J ;
BARTLETT, JF ;
BAZIZI, K ;
BENDICH, J ;
BERI, SB ;
BERTRAM, I ;
BEZZUBOV, VA ;
BHAT, PC ;
BHATNAGAR, V ;
BHATTACHARJEE, M ;
BISCHOFF, A ;
BISWAS, N ;
BLAZEY, G ;
BLESSING, S ;
BLOOM, P ;
BOEHNLEIN, A ;
BOJKO, NI ;
BORCHERDING, F ;
BORDERS, J ;
BOSWELL, C ;
BRANDT, A ;
BROCK, R ;
BROSS, A ;
BUCHHOLZ, D ;
BURTOVOI, VS ;
BUTLER, JM ;
CASEY, D ;
CASTILLAVALDEZ, H .
PHYSICAL REVIEW LETTERS, 1995, 75 (08) :1456-1461
[2]   Measurement of the W mass and width in e+e- collisions at 183 GeV [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 ;
Bartoldus, R ;
Batley, JR ;
Baumann, S ;
Bechtluft, J ;
Behnke, T ;
Bell, KW ;
Bella, G ;
Bellerive, A ;
Bentvelsen, S ;
Bethke, S ;
Betts, S ;
Biebel, O ;
Biguzzi, A ;
Bird, SD ;
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 .
PHYSICS LETTERS B, 1999, 453 (1-2) :138-152
[3]   W+W- production and triple gauge boson couplings at LEP energies up to 183 GeV [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 ;
Bartoldus, R ;
Batley, JR ;
Baumann, S ;
Bechtluft, J ;
Behnke, T ;
Bell, KW ;
Bella, G ;
Bellerive, A ;
Bentvelsen, S ;
Bethke, S ;
Betts, S ;
Biebel, O ;
Biguzzi, A ;
Bird, SD ;
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 .
EUROPEAN PHYSICAL JOURNAL C, 1999, 8 (02) :191-215
[4]   Colour reconnection studies in e+e-→W+W- at √s=183 GeV [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 ;
Bartoldus, R ;
Batley, JR ;
Baumann, S ;
Bechtluft, J ;
Behnke, T ;
Bell, KW ;
Bella, G ;
Bellerive, A ;
Bentvelsen, S ;
Bethke, S ;
Betts, S ;
Biebel, O ;
Biguzzi, A ;
Bird, SD ;
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 .
PHYSICS LETTERS B, 1999, 453 (1-2) :153-168
[5]   A measurement of Rb using a double tagging method [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 ;
Bartoldus, R ;
Batley, JR ;
Baumann, S ;
Bechtluft, J ;
Behnke, T ;
Bell, KW ;
Bella, G ;
Bellerive, A ;
Bentvelsen, S ;
Bethke, S ;
Betts, S ;
Biebel, O ;
Biguzzi, A ;
Bird, SD ;
Blobel, V ;
Bloodworth, IJ ;
Bobinski, M ;
Bock, P ;
Böhme, J ;
Bonacorsi, D ;
Boutemeur, M ;
Braibant, S ;
Bright-Thomas, P ;
Brigliadori, L ;
Brown, RM ;
Burckhart, HJ ;
Burgard, C ;
Bürgin, R ;
Capiluppi, P ;
Carnegie, RK ;
Carter, AA ;
Carter, JR ;
Chang, CY ;
Charlton, DG ;
Chrisman, D .
EUROPEAN PHYSICAL JOURNAL C, 1999, 8 (02) :217-239
[6]   MEASUREMENT OF THE RATIO SIGMA-B(P(P)OVER-BAR-]W-]E-NU)/SIGMA-B(P(P)OVER-BAR-]Z(O)-]EE) IN P(P)OVER-BAR COLLISIONS AT ROOT-S=1800 GEV [J].
ABE, F ;
ALBROW, MG ;
AMENDOLIA, SR ;
AMIDEI, D ;
ANTOS, J ;
ANWAYWIESE, C ;
APOLLINARI, G ;
ARETI, H ;
ATAC, M ;
AUCHINCLOSS, P ;
AZFAR, F ;
AZZI, P ;
BACCHETTA, N ;
BADGETT, W ;
BAILEY, MW ;
BAO, J ;
DEBARBARO, P ;
BARBAROGALTIERI, A ;
BARNES, VE ;
BARNETT, BA ;
BARTALINI, P ;
BAUER, G ;
BAUMANN, T ;
BEDESCHI, F ;
BEHRENDS, S ;
BELFORTE, S ;
BELLETTINI, G ;
BELLINGER, J ;
BENJAMIN, D ;
BENLLOCH, J ;
BENSINGER, J ;
BENTON, D ;
BERETVAS, A ;
BERGE, JP ;
BERTOLUCCI, S ;
BHATTI, A ;
BIERY, K ;
BINKLEY, M ;
BIRD, F ;
BISELLO, D ;
BLAIR, RE ;
BLOCKER, C ;
BODEK, A ;
BOKHARI, W ;
BOLOGNESI, V ;
BORTOLETTO, D ;
BOSWELL, C ;
BOULOS, T ;
BRANDENBURG, G ;
BROMBERG, C .
PHYSICAL REVIEW D, 1995, 52 (05) :R2624-+
[7]   Measurement of |Vcs| using W decays at LEP2 [J].
Abreu, P ;
Adam, W ;
Adye, T ;
Adzic, P ;
Ajinenko, I ;
Alekseev, GD ;
Alemany, R ;
Allport, PP ;
Almehed, S ;
Amaldi, U ;
Amato, S ;
Anassontzis, EG ;
Andersson, P ;
Andreazza, A ;
Antilogus, P ;
Apel, WD ;
Arnoud, Y ;
Asman, 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 ;
Bonesini, M ;
Bonivento, W ;
Boonekamp, M ;
Booth, PSL .
PHYSICS LETTERS B, 1998, 439 (1-2) :209-224
[8]  
AHMET K, 1991, NUCL INSTRUM METH A, V305, P275
[9]   Measurement of heavy quark forward-backward asymmetries and average B mixing using leptons in multihadronic events [J].
Alexander, G ;
Allison, J ;
Altekamp, N ;
Ametewee, K ;
Anderson, KJ ;
Anderson, S ;
Arcelli, S ;
Asai, S ;
Axen, D ;
Azuelos, G ;
Ball, AH ;
Barberio, E ;
Barlow, RJ ;
Bartoldus, R ;
Batley, JR ;
Beaudoin, G ;
Bechtluft, J ;
Beck, GA ;
Beeston, C ;
Behnke, T ;
Bell, AN ;
Bell, KW ;
Bella, G ;
Bentvelsen, S ;
Berlich, P ;
Bethke, S ;
Biebel, O ;
Bloodworth, IJ ;
Bloomer, JE ;
Bock, P ;
Bosch, HM ;
Boutemeur, M ;
Bouwens, BT ;
Braibant, S ;
BrightThomas, P ;
Brown, RM ;
Burckhart, HJ ;
Burgard, C ;
Burgin, R ;
Capiluppi, P ;
Carnegie, RK ;
Carter, AA ;
Carter, JR ;
Chang, CY ;
Charlesworth, C ;
Charlton, DG ;
Chrisman, D ;
Chu, SL ;
Clarke, PEL ;
Clowes, SG .
ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1996, 70 (03) :357-369
[10]   THE DETECTOR SIMULATION PROGRAM FOR THE OPAL EXPERIMENT AT LEP [J].
ALLISON, J ;
BANKS, J ;
BARLOW, RJ ;
BATLEY, JR ;
BIEBEL, O ;
BRUN, R ;
BUIJS, A ;
BULLOCK, FW ;
CHANG, CY ;
CONBOY, JE ;
CRANFIELD, R ;
DALLAVALLE, GM ;
DITTMAR, M ;
DUMONT, JJ ;
FUKUNAGA, C ;
GARY, JW ;
GASCON, J ;
GEDDES, NI ;
GENSLER, SW ;
GIBSON, V ;
GILLIES, JD ;
HAGEMANN, J ;
HANSROUL, M ;
HARRISON, PF ;
HART, J ;
HATTERSLEY, PM ;
HAUSCHILD, M ;
HEMINGWAY, RJ ;
HEYMANN, FF ;
HOBSON, PR ;
HOCHMAN, D ;
HOSPES, R ;
JONES, RWL ;
KAWAGOE, K ;
KAWAMOTO, T ;
KENNEDY, BW ;
KOPKE, L ;
KOWALEWSKI, R ;
KREUTZMANN, H ;
LAFFERTY, GD ;
LAYTER, JG ;
LELLOUCH, D ;
LLOYD, SL ;
LORAZO, B ;
LOSTY, MJ ;
LUVISETTO, ML ;
MCPHERSON, AC ;
MASHIMO, T ;
MATTIG, P ;
MILDENBERGER, J .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1992, 317 (1-2) :47-74