Direct Measurement of the W Production Charge Asymmetry in pp Collisions at √s=1.96 TeV

被引:96
作者
Aaltonen, T. [1 ,2 ]
Adelman, J. [17 ]
Akimoto, T. [71 ]
Alvarez Gonzalez, B. [15 ]
Amerio, S. [54 ,55 ]
Amidei, D. [45 ]
Anastassov, A. [49 ]
Annovi, A. [24 ]
Antos, J. [18 ,19 ]
Apollinari, G. [22 ]
Apresyan, A. [63 ]
Arisawa, T. [73 ]
Artikov, A. [20 ]
Ashmanskas, W. [22 ]
Attal, A. [6 ]
Aurisano, A. [68 ]
Azfar, F. [53 ]
Azzurri, P. [58 ,59 ]
Badgett, W. [22 ]
Barbaro-Galtieri, A. [36 ]
Barnes, V. E. [63 ]
Barnett, B. A. [29 ]
Bartsch, V. [38 ]
Bauer, G. [40 ]
Beauchemin, P. -H. [41 ,42 ,43 ,44 ]
Bedeschi, F. [58 ]
Beecher, D. [38 ]
Behari, S. [29 ]
Bellettini, G. [58 ,59 ]
Bellinger, J. [75 ]
Benjamin, D. [21 ]
Beretvas, A. [22 ]
Beringer, J. [36 ]
Bhatti, A. [65 ]
Binkley, M. [22 ]
Bisello, D. [54 ,55 ]
Bizjak, I. [38 ]
Blair, R. E. [4 ]
Blocker, C. [10 ]
Blumenfeld, B. [29 ]
Bocci, A. [21 ]
Bodek, A. [64 ]
Boisvert, V. [64 ]
Bolla, G. [63 ]
Bortoletto, D. [63 ]
Boudreau, J. [62 ]
Boveia, A. [14 ]
Brau, B. [14 ]
Bridgeman, A. [28 ]
Brigliadori, L. [54 ]
机构
[1] Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland
[2] Helsinki Inst Phys, FIN-00014 Helsinki, Finland
[3] Acad Sinica, Inst Phys, Taipei 11529, Taiwan
[4] Argonne Natl Lab, Argonne, IL 60439 USA
[5] Univ Athens, GR-15771 Athens, Greece
[6] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Barcelona, Spain
[7] Baylor Univ, Waco, TX 76798 USA
[8] Ist Nazl Fis Nucl, I-40127 Bologna, Italy
[9] Univ Bologna, I-40127 Bologna, Italy
[10] Brandeis Univ, Waltham, MA 02254 USA
[11] Univ Calif Davis, Davis, CA 95616 USA
[12] Univ Calif Los Angeles, Los Angeles, CA 90024 USA
[13] Univ Calif San Diego, La Jolla, CA 92093 USA
[14] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA
[15] Univ Cantabria, CSIC, Inst Fis Cantabria, E-39005 Santander, Spain
[16] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA
[17] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA
[18] Comenius Univ, Bratislava 84248, Slovakia
[19] Inst Expt Phys, Kosice 04001, Slovakia
[20] Joint Inst Nucl Res, RU-141980 Dubna, Russia
[21] Duke Univ, Durham, NC 27708 USA
[22] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA
[23] Univ Florida, Gainesville, FL 32611 USA
[24] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy
[25] Univ Geneva, CH-1211 Geneva 4, Switzerland
[26] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland
[27] Harvard Univ, Cambridge, MA 02138 USA
[28] Univ Illinois, Urbana, IL 61801 USA
[29] Johns Hopkins Univ, Baltimore, MD 21218 USA
[30] Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany
[31] Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea
[32] Seoul Natl Univ, Seoul 151742, South Korea
[33] Sungkyunkwan Univ, Suwon 440746, South Korea
[34] Korea Inst Sci & Technol Informat, Taejon 305806, South Korea
[35] Chonnam Natl Univ, Kwangju 500757, South Korea
[36] Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA
[37] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England
[38] UCL, London WC1E 6BT, England
[39] Ctr Invest Energet Medioambientales & Tecnol, E-28040 Madrid, Spain
[40] MIT, Cambridge, MA 02139 USA
[41] McGill Univ, Inst Particle Phys, Montreal, PQ H3A 2T8, Canada
[42] Simon Fraser Univ, Burnaby, BC V5A 1S6, Canada
[43] Univ Toronto, Toronto, ON M5S 1A7, Canada
[44] TRIUMF, Vancouver, BC V6T 2A3, Canada
[45] Univ Michigan, Ann Arbor, MI 48109 USA
[46] Michigan State Univ, E Lansing, MI 48824 USA
[47] Inst Theoret & Expt Phys, Moscow 117259, Russia
[48] Univ New Mexico, Albuquerque, NM 87131 USA
[49] Northwestern Univ, Evanston, IL 60208 USA
[50] Ohio State Univ, Columbus, OH 43210 USA
基金
加拿大自然科学与工程研究理事会; 美国国家科学基金会; 芬兰科学院; 瑞士国家科学基金会; 英国科学技术设施理事会; 俄罗斯基础研究基金会;
关键词
PARTON DISTRIBUTIONS; ELECTROMAGNETIC CALORIMETER; P(P)OVER-BAR COLLISIONS;
D O I
10.1103/PhysRevLett.102.181801
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We present the first direct measurement of the W production charge asymmetry as a function of the W boson rapidity y(W) in pp collisions at root s=1.96 TeV. We use a sample of W -> e nu events in data from 1 fb(-1) of integrated luminosity collected using the CDF II detector. In the region |y(W)|< 3.0, this measurement is capable of constraining the ratio of up- and down-quark momentum distributions in the proton more directly than in previous measurements of the asymmetry that are functions of the charged-lepton pseudorapidity.
引用
收藏
页数:7
相关论文
共 24 条
[1]   Measurement of the muon charge asymmetry from W boson decays [J].
Abazov, V. M. ;
Abbott, B. ;
Abolins, M. ;
Acharya, B. S. ;
Adams, M. ;
Adams, T. ;
Aguilo, E. ;
Ahn, S. H. ;
Ahsan, M. ;
Alexeev, G. D. ;
Alkhazov, G. ;
Alton, A. ;
Alverson, G. ;
Alves, G. A. ;
Anastasoaie, M. ;
Ancu, L. S. ;
Andeen, T. ;
Anderson, S. ;
Andrieu, B. ;
Anzelc, M. S. ;
Arnoud, Y. ;
Arov, M. ;
Arthaud, M. ;
Askew, A. ;
Asman, B. ;
Jesus, A. C. S. Assis ;
Atramentov, O. ;
Autermann, C. ;
Avila, C. ;
Ay, C. ;
Badaud, F. ;
Baden, A. ;
Bagby, L. ;
Baldin, B. ;
Bandurin, D. V. ;
Banerjee, S. ;
Banerjee, P. ;
Barberis, E. ;
Barfuss, A. -F. ;
Bargassa, P. ;
Baringer, P. ;
Barreto, J. ;
Bartlett, J. F. ;
Bassler, U. ;
Bauer, D. ;
Beale, S. ;
Bean, A. ;
Begalli, M. ;
Begel, M. ;
Belanger-Champagne, C. .
PHYSICAL REVIEW D, 2008, 77 (01)
[2]   Measurement of the Electron Charge Asymmetry in p(p)over-bar → W plus X → eν plus X Events at √s=1.96 TeV [J].
Abazov, V. M. ;
Abbott, B. ;
Abolins, M. ;
Acharya, B. S. ;
Adams, M. ;
Adams, T. ;
Aguilo, E. ;
Ahsan, M. ;
Alexeev, G. D. ;
Alkhazov, G. ;
Alton, A. ;
Alverson, G. ;
Alves, G. A. ;
Anastasoaie, M. ;
Ancu, L. S. ;
Andeen, T. ;
Andrieu, B. ;
Anzelc, M. S. ;
Aoki, M. ;
Arnoud, Y. ;
Arov, M. ;
Arthaud, M. ;
Askew, A. ;
Asman, B. ;
Assis Jesus, A. C. S. ;
Atramentov, O. ;
Avila, C. ;
Badaud, F. ;
Bagby, L. ;
Baldin, B. ;
Bandurin, D. V. ;
Banerjee, P. ;
Banerjee, S. ;
Barberis, E. ;
Barfuss, A. -F. ;
Bargassa, P. ;
Baringer, P. ;
Barreto, J. ;
Bartlett, J. F. ;
Bassler, U. ;
Bauer, D. ;
Beale, S. ;
Bean, A. ;
Begalli, M. ;
Begel, M. ;
Belanger-Champagne, C. ;
Bellantoni, L. ;
Bellavance, A. ;
Benitez, J. A. ;
Beri, S. B. .
PHYSICAL REVIEW LETTERS, 2008, 101 (21)
[3]   Measurement of the lepton charge asymmetry in W-boson decays produced in p(p)over-bar collisions [J].
Abe, F ;
Akimoto, H ;
Akopian, A ;
Albrow, MG ;
Amadon, A ;
Amendolia, SR ;
Amidei, D ;
Antos, J ;
Aota, S ;
Apollinari, G ;
Arisawa, T ;
Asakawa, T ;
Ashmanskas, W ;
Atac, M ;
Azzi-Bacchetta, P ;
Bacchetta, N ;
Bagdasarov, S ;
Bailey, MW ;
de Barbaro, P ;
Barbaro-Galtieri, A ;
Barnes, VE ;
Barnett, BA ;
Barone, M ;
Bauer, G ;
Baumann, T ;
Bedeschi, F ;
Behrends, S ;
Belforte, S ;
Bellettini, G ;
Bellinger, J ;
Benjamin, D ;
Bensinger, J ;
Beretvas, A ;
Berge, JP ;
Berryhill, J ;
Bertolucci, S ;
Bettelli, S ;
Bevensee, B ;
Bhatti, A ;
Biery, K ;
Bigongiari, C ;
Binkley, M ;
Bisello, D ;
Blair, RE ;
Blocker, C ;
Blusk, S ;
Bodek, A ;
Bokhari, W ;
Bolla, G ;
Bonushkin, Y .
PHYSICAL REVIEW LETTERS, 1998, 81 (26) :5754-5759
[4]   Measurements of inclusive W and Z cross sections in p(p)over-bar collisions at √s=1.96 TeV [J].
Abulencia, A. ;
Acosta, D. ;
Adelman, J. ;
Affolder, T. ;
Akimoto, T. ;
Albrow, M. G. ;
Ambrose, D. ;
Amerio, S. ;
Amidei, D. ;
Anastassov, A. ;
Anikeev, K. ;
Annovi, A. ;
Antos, J. ;
Aoki, M. ;
Apollinari, G. ;
Arguin, J-F ;
Arisawa, T. ;
Artikov, A. ;
Ashmanskas, W. ;
Attal, A. ;
Azfar, F. ;
Azzi-Bacchetta, P. ;
Azzurri, P. ;
Bacchetta, N. ;
Bachacou, H. ;
Badgett, W. ;
Barbaro-Galtieri, A. ;
Barnes, V. E. ;
Barnett, B. A. ;
Baroiant, S. ;
Bartsch, V. ;
Bauer, G. ;
Bedeschi, F. ;
Behari, S. ;
Belforte, S. ;
Bellettini, G. ;
Bellinger, J. ;
Belloni, A. ;
Ben-Haim, E. ;
Benjamin, D. ;
Beretvas, A. ;
Beringer, J. ;
Berry, T. ;
Bhatti, A. ;
Binkley, M. ;
Bisello, D. ;
Bishai, M. ;
Blair, R. E. ;
Blocker, C. ;
Bloom, K. .
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 2007, 34 (12) :2457-2544
[5]   Measurement of the forward-backward charge asymmetry from W → ev production in p(p)over-bar collisions at √s=1.96 TeV -: art. no. 051104 [J].
Acosta, D ;
Adelman, J ;
Affolder, T ;
Akimoto, T ;
Albrow, MG ;
Ambrose, D ;
Amerio, S ;
Amidei, D ;
Anastassov, A ;
Anikeev, K ;
Annovi, A ;
Antos, J ;
Aoki, M ;
Apollinari, G ;
Arisawa, T ;
Arguin, JF ;
Artikov, A ;
Ashmanskas, W ;
Attal, A ;
Azfar, F ;
Azzi-Bacchetta, P ;
Bacchetta, N ;
Bachacou, H ;
Badgett, W ;
Barbaro-Galtieri, A ;
Barker, GJ ;
Barnes, VE ;
Barnett, BA ;
Baroiant, S ;
Barone, M ;
Bauer, G ;
Bedeschi, F ;
Behari, S ;
Belforte, S ;
Bellettini, G ;
Bellinger, J ;
Ben-Haim, E ;
Benjamin, D ;
Beretvas, A ;
Bhatti, A ;
Binkley, M ;
Bisello, D ;
Bishai, M ;
Blair, RE ;
Blocker, C ;
Bloom, K ;
Blumenfeld, B ;
Bocci, A ;
Bodek, A ;
Bolla, G .
PHYSICAL REVIEW D, 2005, 71 (05) :1-9
[6]   Measurement of the J/ψ meson and b-hadron production cross sections in p(p)over-bar collisions at √s=1960 GeV -: art. no. 032001 [J].
Acosta, D ;
Adelman, J ;
Affolder, T ;
Akimoto, T ;
Albrow, MG ;
Ambrose, D ;
Amerio, S ;
Amidei, D ;
Anastassov, A ;
Anikeev, K ;
Annovi, A ;
Antos, J ;
Aoki, M ;
Apollinari, G ;
Arisawa, T ;
Arguin, JF ;
Artikov, A ;
Ashmanskas, W ;
Attal, A ;
Azfar, F ;
Azzi-Bacchetta, P ;
Bacchetta, N ;
Bachacou, H ;
Badgett, W ;
Barbaro-Galtieri, A ;
Barker, GJ ;
Barnes, VE ;
Barnett, BA ;
Baroiant, S ;
Barone, M ;
Bauer, G ;
Bedeschi, F ;
Behari, S ;
Belforte, S ;
Bellettini, G ;
Bellinger, J ;
Ben-Haim, E ;
Benjamin, D ;
Beretvas, A ;
Bhatti, A ;
Binkley, M ;
Bisello, D ;
Bishai, M ;
Blair, RE ;
Blocker, C ;
Bloom, K ;
Blumenfeld, B ;
Bocci, A ;
Bodek, A ;
Bolla, G .
PHYSICAL REVIEW D, 2005, 71 (03) :032001-1
[7]   Intermediate silicon layers detector for the CDF experiment [J].
Affolder, A ;
Azzi-Bacchetta, P ;
Bacchetta, N ;
Barker, G ;
Barbaro-Galtieri, A ;
Basti, A ;
Bedeschi, F ;
Bisello, D ;
Blusk, S ;
Caskey, WP ;
Chiarelli, G ;
Connolly, A ;
Demina, R ;
Ely, R ;
Field, R ;
Garcia-Sciveres, M ;
Giolo, K ;
Goldstein, D ;
Goldstein, J ;
Grim, GP ;
Guerzoni, M ;
Haas, R ;
Haber, C ;
Hara, K ;
Hartmann, F ;
Heiss, A ;
Hill, C ;
Hrycyk, M ;
Incandela, J ;
Kato, Y ;
Knoblauch, D ;
Kruse, M ;
Lander, RL ;
Lei, CM ;
Leonardi, GL ;
Leone, S ;
Miyazaki, Y ;
Moggi, A ;
Muller, T ;
Munar-Ara, A ;
Okusawa, T ;
Palmonari, F ;
Paulini, M ;
Piacentino, G ;
Pellett, DE ;
Raffaelli, F ;
Roederer, F ;
Saltzberg, D ;
Shimojima, M ;
Stuart, D .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2000, 453 (1-2) :84-88
[8]   CDF central outer tracker [J].
Affolder, T ;
Allspach, D ;
Ambrose, D ;
Bialek, J ;
Bokhari, W ;
Brozovic, M ;
Binkley, M ;
Burkett, K ;
Byon-Wagner, A ;
Cogswell, F ;
Dressnandt, N ;
Feng, Z ;
Franklin, M ;
Galtieri, L ;
Gerdes, DW ;
Greenwood, J ;
Guarino, V ;
da Costa, JG ;
Haggerty, R ;
Hall, C ;
Heinrich, J ;
Holloway, A ;
Jacobi, T ;
Kephart, K ;
Khazins, D ;
Kim, YK ;
Kirby, M ;
Kononenko, W ;
Kotwal, AV ;
Kraus, J ;
Liss, TM ;
Lockyer, N ;
Madrak, R ;
Miao, T ;
Mukherjee, A ;
Neu, C ;
Newcomer, M ;
Niczyporuk, JM ;
Nodulman, L ;
Orejudous, W ;
Phillips, TJ ;
Pitts, KT ;
Reigler, W ;
Richards, R ;
Rivetta, C ;
Robertson, WJ ;
Roser, R ;
Sadler, L ;
Sandberg, R ;
Sansone, S .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2004, 526 (03) :249-299
[9]   The CDF plug upgrade electromagnetic calorimeter: test beam results [J].
Albrow, M ;
Aota, S ;
Apollinari, G ;
Asakawa, T ;
Bailey, M ;
de Barbaro, P ;
Barnes, V ;
Biery, K ;
Bodek, A ;
Breccia, L ;
Brunetti, R ;
Budd, H ;
Cauz, D ;
Demortier, L ;
Fiori, I ;
Frautschi, M ;
Fukui, Y ;
Ganel, O ;
Gotra, Y ;
Hahn, S ;
Handa, T ;
Hatakeyama, K ;
Ikeda, H ;
Introzzi, G ;
Iwai, J ;
Kikuchi, T ;
Kim, SH ;
Kowald, W ;
Laasanen, A ;
Lamoureux, J ;
Lindgren, M ;
Liu, J ;
Lusin, S ;
Melese, P ;
Minato, H ;
Murgia, S ;
Nakada, H ;
Patrick, J ;
Pauletta, G ;
Sakumoto, W ;
Santi, L ;
Seiya, Y ;
Solodsky, A ;
Wigmans, R ;
Zucchelli, S .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2002, 480 (2-3) :524-546
[10]   High-precision QCD at hadron colliders: Electroweak gauge boson rapidity distributions at next-to-next-to leading order [J].
Anastasiou, C ;
Dixon, L ;
Melnikov, K ;
Petriello, F .
PHYSICAL REVIEW D, 2004, 69 (09) :27