Phys. Rev. D
65,
092006
(2002)
[12 pages]
Measurement of the b-quark fragmentation function in Z0 decays
Koya Abe et al. (SLD Collaboration)
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Koya Abe24, Kenji Abe15, T. Abe21, I. Adam21, H. Akimoto21, D. Aston21, K. G. Baird11, C. Baltay30, H. R. Band29, T. L. Barklow21, J. M. Bauer12, G. Bellodi17, R. Berger21, G. Blaylock11, J. R. Bogart21, G. R. Bower21, J. E. Brau16, M. Breidenbach21, W. M. Bugg23, D. Burke21, T. H. Burnett28, P. N. Burrows17, A. Calcaterra8, R. Cassell21, A. Chou21, H. O. Cohn23, J. A. Coller4, M. R. Convery21, V. Cook28, R. F. Cowan13, G. Crawford21, C. J. S. Damerell19, M. Daoudi21, N. de Groot2, R. de Sangro8, D. N. Dong13, M. Doser21, R. Dubois21, I. Erofeeva14, V. Eschenburg12, E. Etzion29, S. Fahey5, D. Falciai8, J. P. Fernandez26, K. Flood11, R. Frey16, E. L. Hart23, K. Hasuko24, S. S. Hertzbach11, M. E. Huffer21, X. Huynh21, M. Iwasaki16, D. J. Jackson19, P. Jacques20, J. A. Jaros21, Z. Y. Jiang21, A. S. Johnson21, J. R. Johnson29, R. Kajikawa15, M. Kalelkar20, H. J. Kang20, R. R. Kofler11, R. S. Kroeger12, M. Langston16, D. W. G. Leith21, V. Lia13, C. Lin11, G. Mancinelli20, S. Manly30, G. Mantovani18, T. W. Markiewicz21, T. Maruyama21, A. K. McKemey3, R. Messner21, K. C. Moffeit21, T. B. Moore30, M. Morii21, D. Muller21, V. Murzin14, S. Narita24, U. Nauenberg5, H. Neal30, G. Nesom17, N. Oishi15, D. Onoprienko23, L. S. Osborne13, R. S. Panvini27, C. H. Park22, I. Peruzzi8, M. Piccolo8, L. Piemontese7, R. J. Plano20, R. Prepost29, C. Y. Prescott21, B. N. Ratcliff21, J. Reidy12, P. L. Reinertsen26, L. S. Rochester21, P. C. Rowson21, J. J. Russell21, O. H. Saxton21, T. Schalk26, B. A. Schumm26, J. Schwiening21, V. V. Serbo21, G. Shapiro10, N. B. Sinev16, J. A. Snyder30, H. Staengle6, A. Stahl21, P. Stamer20, H. Steiner10, D. Su21, F. Suekane24, A. Sugiyama15, A. Suzuki15, M. Swartz9, F. E. Taylor13, J. Thom21, E. Torrence13, T. Usher21, J. Va’vra21, R. Verdier13, D. L. Wagner5, A. P. Waite21, S. Walston16, A. W. Weidemann23, E. R. Weiss28, J. S. Whitaker4, S. H. Williams21, S. Willocq11, R. J. Wilson6, W. J. Wisniewski21, J. L. Wittlin11, M. Woods21, T. R. Wright29, R. K. Yamamoto13, J. Yashima24, S. J. Yellin25, C. C. Young21, and H. Yuta1 (SLD Collaboration)
Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309
1Aomori University, Aomori, 030, Japan
2University of Bristol, Bristol, United Kingdom
3Brunel University, Uxbridge, Middlesex UB8 3PH, United Kingdom
4Boston University, Boston, Massachusetts 02215
5University of Colorado, Boulder, Colorado 80309
6Colorado State University, Fort Collins, Colorado 80523
7INFN Sezione di Ferrara and Universita di Ferrara, I-44100 Ferrara, Italy
8INFN Laboratori Nazionali di Frascati, I-00044 Frascati, Italy
9Johns Hopkins University, Baltimore, Maryland 21218-2686
10Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720
11University of Massachusetts, Amherst, Massachusetts 01003
12University of Mississippi, University, Mississippi 38677
13Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
14Institute of Nuclear Physics, Moscow State University, 119899 Moscow, Russia
15Nagoya University, Chikusa-ku, Nagoya, 464, Japan
16University of Oregon, Eugene, Oregon 97403
17Oxford University, Oxford OX1 3RH, United Kingdom
18INFN Sezione di Perugia and Universita di Perugia, I-06100 Perugia, Italy
19Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX, United Kingdom
20Rutgers University, Piscataway, New Jersey 08855
21Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309
22Soongsil University, Seoul 156-743, Korea
23University of Tennessee, Knoxville, Tennessee 37996
24Tohoku University, Sendai, 980, Japan
25University of California at Santa Barbara, Santa Barbara, California 93106
26University of California at Santa Cruz, Santa Cruz, California 95064
27Vanderbilt University, Nashville, Tennessee 37235
28University of Washington, Seattle, Washington 98105
29University of Wisconsin, Madison, Wisconsin 53706
30Yale University, New Haven, Connecticut 06511
See Also:
Erratum
Received 19 February 2002; published 16 May 2002
We present a measurement of the b-quark inclusive fragmentation function in Z0 decays using a novel kinematic B-hadron energy reconstruction technique. The measurement was performed using 350 000 hadronic Z0 events recorded in the SLD experiment at SLAC between 1997 and 1998. The small and stable SLC beam spot and the charge-coupled-device–based vertex detector were used to reconstruct B-decay vertices with high efficiency and purity, and to provide precise measurements of the kinematic quantities used in this technique. We measured the B energy with good efficiency and resolution over the full kinematic range. We compared the scaled B-hadron energy distribution with models of b-quark fragmentation and with several ad hoc functional forms. A number of models and functions are excluded by the data. The average scaled energy of weakly decaying B hadrons was measured to be 〈xb〉=0.709±0.003(stat)±0.003(syst)±0.002(model).
© 2002 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevD.65.092006
DOI:
10.1103/PhysRevD.65.092006
See Also
Erratum:
Koya Abe et al. (SLD Collaboration),
Erratum: Measurement of the b-quark fragmentation function in Z0 decays [Phys. Rev. D 65, 092006 (2002)],
Phys. Rev. D 66, 079905 (2002).
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