Observation of high momentum ηl production in B decays

被引：65

作者：

Browder, TE ^{[1
]}

Li, Y

Rodriguez, JL

Bergfeld, T

Eisenstein, BI

Ernst, J

Gladding, GE

Gollin, GD

Hans, RM

Johnson, E

Karliner, I

Marsh, MA

Palmer, M

Selen, M

Thaler, JJ

Edwards, KW

Bellerive, A

Janicek, R

MacFarlane, DB

Patel, PM

Sadoff, AJ

Ammar, R

Baringer, P

Bean, A

Besson, D

Coppage, D

Darling, C

Davis, R

Kotov, S

Kravchenko, I

Kwak, N

Zhou, L

Anderson, S

Kubota, Y

Lee, SJ

O'Neill, JJ

Poling, R

Riehle, T

Smith, A

Alam, MS

Athar, SB

Ling, Z

Mahmood, AH

Timm, S

Wappler, F

Anastassov, A

Duboscq, JE

Fujino, D

Gan, KK

Hart, T

机构：

[1] Univ Hawaii Manoa, Honolulu, HI 96822 USA

[2] Univ Illinois, Urbana, IL 61801 USA

[3] Carleton Univ, Ottawa, ON K1S 5B6, Canada

[4] Inst Particle Phys, Montreal, PQ, Canada

[5] McGill Univ, Montreal, PQ H3A 2T8, Canada

[6] Ithaca Coll, Ithaca, NY 14850 USA

[7] Univ Kansas, Lawrence, KS 66045 USA

[8] Univ Minnesota, Minneapolis, MN 55455 USA

[9] SUNY Albany, Albany, NY 12222 USA

[10] Ohio State Univ, Columbus, OH 43210 USA

[11] Univ Oklahoma, Norman, OK 73019 USA

[12] Purdue Univ, W Lafayette, IN 47907 USA

[13] Univ Rochester, Rochester, NY 14627 USA

[14] Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA

[15] So Methodist Univ, Dallas, TX 75275 USA

[16] Syracuse Univ, Syracuse, NY 13244 USA

[17] Vanderbilt Univ, Nashville, TN 37235 USA

[18] Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA

[19] Wayne State Univ, Detroit, MI 48202 USA

[20] CALTECH, Pasadena, CA 91125 USA

[21] Univ Calif San Diego, La Jolla, CA 92093 USA

[22] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA

[23] Univ Colorado, Boulder, CO 80309 USA

[24] Cornell Univ, Ithaca, NY 14853 USA

[25] Univ Florida, Gainesville, FL 32611 USA

[26] Harvard Univ, Cambridge, MA 02138 USA

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.81.1786

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the first observation of B --> eta'X transitions with high momentum eta' mesons. We observe 39.0 +/- 11.6 B decay events with 2.0 < p(eta') < 2.7 GeV/c, the high momentum region where background from b --> c processes is suppressed. We discuss the physical interpretation of the signal, including the possibility that it is due to b sg transitions. Given that interpretation, we find B(B --> eta'X-s) = [6.2 +/- 1.6(stat) +/- 1.3(syst)(-1.5)(+0.0)(bkg)] x 10(-4) for 2.0 < p(eta') < 2.7 GeV/c.

引用

页码：1786 / 1790

页数：5

共 20 条

[1] SQUARK PRODUCTION AT THE FERMILAB TEVATRON [J].

BEENAKKER, W ;

HOPKER, R ;

SPIRA, M ;

ZERWAS, PM .

PHYSICAL REVIEW LETTERS, 1995, 74 (15) :2905-2908

[2]

[Anonymous], HEPPH9707354

[3] Beta->eta'+X and the QCD anomaly [J].

Atwood, D ;

Soni, A .

PHYSICS LETTERS B, 1997, 405 (1-2) :150-156

[4] Two-body B meson decays to η and η′:: Observation of B→η′K [J].

Behrens, BH ;

Ford, WT ;

Gritsan, A ;

Krieg, H ;

Roy, J ;

Smith, JG ;

Zhao, M ;

Alexander, JP ;

Baker, R ;

Bebek, C ;

Berger, BE ;

Berkelman, K ;

Bloom, K ;

Boisvert, V ;

Cassel, DG ;

Crowcroft, DS ;

Dickson, M ;

von Dombrowski, S ;

Drell, PS ;

Ecklund, KM ;

Ehrlich, R ;

Foland, AD ;

Gaidarev, P ;

Gibbons, L ;

Gittelman, B ;

Gray, SW ;

Hartill, DL ;

Heltsley, BK ;

Hopman, PI ;

Kandaswamy, J ;

Kim, PC ;

Kreinick, DL ;

Lee, T ;

Liu, Y ;

Mistry, NB ;

Ng, CR ;

Nordberg, E ;

Ogg, M ;

Patterson, JR ;

Peterson, D ;

Riley, D ;

Soffer, A ;

Valant-Spaight, B ;

Ward, C ;

Athanas, M ;

Avery, P ;

Jones, CD ;

Lohner, M ;

Patton, S ;

Prescott, C .

PHYSICAL REVIEW LETTERS, 1998, 80 (17) :3710-3714

[5] New measurement of B→D*π branching fractions [J].

Brandenburg, G ;

Briere, RA ;

Gao, YS ;

Kim, DYJ ;

Wilson, R ;

Yamamoto, H ;

Browder, TE ;

Li, F ;

Li, Y ;

Rodriguez, JL ;

Bergfeld, T ;

Eisenstein, BI ;

Ernst, J ;

Gladding, GE ;

Gollin, GD ;

Hans, RM ;

Johnson, E ;

Karliner, I ;

Marsh, MA ;

Palmer, M ;

Selen, M ;

Thaler, JJ ;

Edwards, KW ;

Bellerive, A ;

Janicek, R ;

MacFarlane, DB ;

McLean, KW ;

Patel, PM ;

Sadoff, AJ ;

Ammar, R ;

Baringer, P ;

Bean, A ;

Besson, D ;

Coppage, D ;

Darling, C ;

Davis, R ;

Hancock, N ;

Kotov, S ;

Kravchenko, I ;

Kwak, N ;

Anderson, S ;

Kubota, Y ;

Lattery, M ;

Lee, SJ ;

O'Neill, JJ ;

Patton, S ;

Poling, R ;

Riehle, T ;

Savinov, V ;

Smith, A .

PHYSICAL REVIEW LETTERS, 1998, 80 (13) :2762-2766

[6] Charmless B decays to η′ and η [J].

Cheng, HY ;

Tseng, B .

PHYSICS LETTERS B, 1997, 415 (03) :263-272

[7] Quasi-inclusive and exclusive decays of B to η′ [J].

Datta, A ;

He, XG ;

Pakvasa, S .

PHYSICS LETTERS B, 1998, 419 (1-4) :369-376

[8] 2 BODY NONLEPTONIC DECAYS OF B AND BS MESONS [J].

DEANDREA, A ;

DIBARTOLOMEO, N ;

GATTO, R ;

NARDULLI, G .

PHYSICS LETTERS B, 1993, 318 (03) :549-558

[9] Momentum spectrum of the η′ meson in the inclusive decay β→η′Xs [J].

Du, DS ;

Yang, MZ .

PHYSICAL REVIEW D, 1998, 57 (09) :R5332-R5334

[10] The gluonic decay of the b-quark and the η′-meson [J].

Fritzsch, H .

PHYSICS LETTERS B, 1997, 415 (01) :83-89

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