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

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