Phys. Rev. Lett.
74,
2880–2884
(1995)
Polarized Bhabha Scattering and a Precision Measurement of the Electron Neutral Current Couplings
K. Abe et al. SLD Collaboration
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K. Abe29, I. Abt14, C. J. Ahn26, T. Akagi27, W. W. Ash27, D. Aston27, N. Bacchetta21, K. G. Baird24, C. Baltay33, H. R. Band32, M. B. Barakat33, G. Baranko10, O. Bardon16, T. Barklow27, A. O. Bazarko11, R. Ben-David33, A. C. Benvenuti2, T. Bienz27, G. M. Bilei22, D. Bisello21, G. Blaylock7, J. R. Bogart27, T. Bolton11, G. R. Bower27, J. E. Brau20, M. Breidenbach27, W. M. Bugg28, D. Burke27, T. H. Burnett31, P. N. Burrows16, W. Busza16, A. Calcaterra13, D. O. Caldwell6, D. Calloway27, B. Camanzi12, M. Carpinelli23, R. Cassell27, R. Castaldi23, A. Castro21, M. Cavalli-Sforza7, E. Church31, H. O. Cohn28, J. A. Coller3, V. Cook31, R. Cotton4, R. F. Cowan16, D. G. Coyne7, A. D'Oliveira8, C. J. S. Damerell25, S. Dasu27, R. De Sangro13, P. De Simone13, R. Dell'Orso23, M. Dima9, P. Y. C. Du28, R. Dubois27, B. I. Eisenstein14, R. Elia27, D. Falciai22, C. Fan10, M. J. Fero16, R. Frey20, K. Furuno20, T. Gillman25, G. Gladding14, S. Gonzalez16, G. D. Hallewell27, E. L. Hart28, Y. Hasegawa29, S. Hedges4, S. S. Hertzbach17, M. D. Hildreth27, J. Huber20, M. E. Huffer27, E. W. Hughes27, H. Hwang20, Y. Iwasaki29, P. Jacques24, J. Jaros27, A. S. Johnson3, J. R. Johnson32, R. A. Johnson8, T. Junk27, R. Kajikawa19, M. Kalelkar24, I. Karliner14, H. Kawahara27, H. W. Kendall16, Y. Kim26, M. E. King27, R. King27, R. R. Kofler17, N. M. Krishna10, R. S. Kroeger18, J. F. Labs27, M. Langston20, A. Lath16, J. A. Lauber10, D. W. G. Leith27, X. Liu7, M. Loreti21, A. Lu6, H. L. Lynch27, J. Ma31, G. Mancinelli22, S. Manly33, G. Mantovani22, T. W. Markiewicz27, T. Maruyama27, R. Massetti22, H. Masuda27, E. Mazzucato12, A. K. McKemey4, B. T. Meadows8, R. Messner27, P. M. Mockett31, K. C. Moffeit27, B. Mours27, G. Müller27, D. Muller27, T. Nagamine27, U. Nauenberg10, H. Neal27, M. Nussbaum8, Y. Ohnishi19, L. S. Osborne16, R. S. Panvini30, H. Park20, T. J. Pavel27, I. Peruzzi13, L. Pescara21, M. Piccolo13, L. Piemontese12, E. Pieroni23, K. T. Pitts20, R. J. Plano24, R. Prepost32, C. Y. Prescott27, G. D. Punkar27, J. Quigley16, B. N. Ratcliff27, T. W. Reeves30, P. E. Rensing27, L. S. Rochester27, J. E. Rothberg31, P. C. Rowson11, J. J. Russell27, O. H. Saxton27, T. Schalk7, R. H. Schindler27, U. Schneekloth16, B. A. Schumm15, A. Seiden7, S. Sen33, V. V. Serbo32, M. H. Shaevitz11, J. T. Shank3, G. Shapiro15, S. L. Shapiro27, D. J. Sherden27, C. Simopoulos27, N. B. Sinev20, S. R. Smith27, J. A. Snyder33, P. Stamer24, H. Steiner15, R. Steiner1, M. G. Strauss17, D. Su27, F. Suekane29, A. Sugiyama19, S. Suzuki19, M. Swartz27, A. Szumilo31, T. Takahashi27, F. E. Taylor16, E. Torrence16, J. D. Turk33, T. Usher27, J. Va'vra27, C. Vannini23, E. Vella27, J. P. Venuti30, P. G. Verdini23, S. R. Wagner27, A. P. Waite27, S. J. Watts4, A. W. Weidemann28, J. S. Whitaker3, S. L. White28, F. J. Wickens25, D. A. Williams7, D. C. Williams16, S. H. Williams27, S. Willocq33, R. J. Wilson9, W. J. Wisniewski5, M. Woods27, G. B. Word24, J. Wyss21, R. K. Yamamoto16, J. M. Yamartino16, X. Q. Yang20, S. J. Yellin6, C. C. Young27, H. Yuta29, G. Zapalac32, R. W. Zdarko27, C. Zeitlin20, and J. Zhou20 (SLD Collaboration)
1Adelphi University, Garden City, New York 11530
2INFN Sezione di Bologna, I-40126 Bologna, Italy
3Boston University, Boston, Massachusetts 02215
4Brunel University, Uxbridge, Middlesex UB8 3PH, United Kingdom
5California Institute of Technology, Pasadena, California 91125
6University of California at Santa Barbara, Santa Barbara, California 93106
7University of California at Santa Cruz, Santa Cruz, California 95064
8University of Cincinnati, Cincinnati, Ohio 45221
9Colorado State University, Fort Collins, Colorado 80523
10University of Colorado, Boulder, Colorado 80309
11Columbia University, New York, New York 10027
12INFN Sezione di Ferrara and Università di Ferrara, I-44100 Ferrara, Italy
13INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy
14University of Illinois, Urbana, Illinois 61801
15Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720
16Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
17University of Massachusetts, Amherst, Massachusetts 01003
18University of Mississippi, University, Mississippi 38677
19Nagoya University, Chikusa-ku, Nagoya 464 Japan
20University of Oregon, Eugene, Oregon 97403
21INFN Sezione di Padova and Università di Padova, I-35100 Padova, Italy
22INFN Sezione di Perugia and Università di Perugia, I-06100 Perugia, Italy
23INFN Sezione di Pisa and Università di Pisa, I-56100 Pisa, Italy
24Rutgers University, Piscataway, New Jersey 08855
25Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX, United Kingdom
26Sogang University, Seoul, Korea
27Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309
28University of Tennessee, Knoxville, Tennessee 37996
29Tohoku University, Sendai 980, Japan
30Vanderbilt University, Nashville, Tennessee 37235
31University of Washington, Seattle, Washington 98195
32University of Wisconsin, Madison, Wisconsin 53706
33Yale University, New Haven, Connecticut 06511
Received 14 September 1994; published in the issue dated 10 April 1995
Bhabha scattering with polarized electrons at the Z0 resonance has been measured with the SLD experiment at the SLAC Linear Collider. The first measurement of the left-right asymmetry in Bhabha scattering is presented, yielding the effective weak mixing angle of sin2θWeff = 0.2245±0.0049±0.0010. The effective electron couplings to the Z0 are extracted from a combined analysis of polarized Bhabha scattering and the left-right asymmetry previously published: υe = -0.0414±0.0020 and ae = -0.4977±0.0045.
© 1995 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.74.2880
DOI:
10.1103/PhysRevLett.74.2880
PACS:
13.10.+q, 12.15.Mm, 14.70.Hp
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