Study of B decays to charmonium states:: B → ηcK and B → χc0K

被引：65

作者：

Edwards, KW ^{[1
]}

Janicek, R

Patel, PM

Sadoff, AJ

Ammar, R

Bean, A

Besson, D

Davis, R

Kwak, N

Zhao, X

Anderson, S

Frolov, VV

Kubota, Y

Lee, SJ

Mahapatra, R

O'Neill, JJ

Poling, R

Riehle, T

Smith, A

Stepaniak, CJ

Urheim, J

Ahmed, S

Alam, MS

Athar, SB

Jian, L

Ling, L

Saleem, M

Timm, S

Wappler, F

Anastassov, A

Duboscq, JE

Eckhart, E

Gan, KK

Gwon, C

Hart, T

Honscheid, K

Hufnagel, D

Kagan, H

Kass, R

Pedlar, TK

Schwarthoff, H

Thayer, JB

von Toerne, E

Zoeller, MM

Richichi, SJ

Severini, H

Skubic, P

Undrus, A

Chen, S

Fast, J

机构：

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

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

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

[4] Ithaca Coll, Ithaca, NY 14850 USA

[5] Univ Kansas, Lawrence, KS 66045 USA

[6] Univ Minnesota, Minneapolis, MN 55455 USA

[7] SUNY Albany, Albany, NY 12222 USA

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

[9] Univ Oklahoma, Norman, OK 73019 USA

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

[11] Univ Rochester, Rochester, NY 14627 USA

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

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

[14] Syracuse Univ, Syracuse, NY 13244 USA

[15] Univ Texas, Austin, TX 78712 USA

[16] Univ Texas Pan Amer, Edinburg, TX 78539 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] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA

[24] Univ Colorado, Boulder, CO 80309 USA

[25] Cornell Univ, Ithaca, NY 14853 USA

[26] Univ Florida, Gainesville, FL 32611 USA

[27] Harvard Univ, Cambridge, MA 02138 USA

[28] Univ Hawaii, Honolulu, HI 96822 USA

[29] Univ Illinois, Urbana, IL 61801 USA

[30] Univ Cincinnati, Cincinnati, OH 45221 USA

[31] MIT, Cambridge, MA 02139 USA

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 01期

基金：

巴西圣保罗研究基金会;

关键词：

D O I：

10.1103/PhysRevLett.86.30

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In a sample of 9.66 x 10(6) B(B) over bar pairs collected with the CLEO detector we make the first observation of B decays to an eta (c) and a kaon. We measure branching fractions B(B+ --> eta K-c(+)) = (0.69(-0.21)(+0.26) +/- 0.08 +/- 0.20) x 10(-3) and B(B degrees --> eta K-c degrees) = (1.09(-0.42)(+0.55) +/- 0.12 +/- 0.31) x 10(-3), where the first error is statistical, the second is systematic, and the third is from the eta (c) branching fraction uncertainty. From these we extract the eta (c) decay constant in the factorization approximation, f(eta), = 335 +/- 75 MeV. We also search for B decays to a chi (c0) and a kaon. No evidence for a signal is found and we set 90% C.L. upper limits: B(B+ --> chi K-c0(+)) < 4.8 x 10(-4) and B(B<degrees> --> chi K-c0 degrees) < 5.0 x 10(-4).

引用

页码：30 / 34

页数：5

共 23 条

[1] A THEORETICAL PREDICTION FOR EXCLUSIVE DECAYS B-]K(K-ASTERISK)ETA(C) [J].

AHMADY, MR ;

MENDEL, RR .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1995, 65 (02) :263-265

[2] Study of the P-wave charmonium state χcJ in ψ/(2S) decays [J].

Bai, JZ ;

Bian, JG ;

Blum, I ;

Chai, ZW ;

Chen, GP ;

Chen, HF ;

Chen, J ;

Chen, JC ;

Chen, Y ;

Chen, YB ;

Chen, YQ ;

Cheng, BS ;

Cui, XZ ;

Ding, HL ;

Ding, LY ;

Dong, LY ;

Du, ZZ ;

Dunwoodie, W ;

Feng, S ;

Gao, CS ;

Cao, ML ;

Gao, SQ ;

Gratton, P ;

Gu, JH ;

Gu, SD ;

Gu, WX ;

Gu, YF ;

Guo, YN ;

Han, SW ;

Han, Y ;

Harris, FA ;

He, J ;

He, JT ;

He, M ;

Hitlin, DG ;

Hu, GY ;

Hu, HM ;

Hu, JL ;

Hu, QH ;

Hu, T ;

Hu, XQ ;

Huang, JD ;

Huang, YZ ;

Izen, JM ;

Jiang, CH ;

Jin, Y ;

Ke, ZJ ;

Kelsey, MH ;

Kim, BK ;

Kong, D .

PHYSICAL REVIEW LETTERS, 1998, 81 (15) :3091-3095

[3]

BALEST R, 1995, PHYS REV D, V52, P2661, DOI 10.1103/PhysRevD.52.2661

[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] QCD analysis of inclusive B decay into charmonium -: art. no. 054003 [J].

Beneke, M ;

Maltoni, F ;

Rothstein, IZ .

PHYSICAL REVIEW D, 1999, 59 (05)

[6] P-WAVE CHARMONIUM PRODUCTION IN B-MESON DECAYS [J].

BODWIN, GT ;

BRAATEN, E ;

YUAN, TC ;

LEPAGE, GP .

PHYSICAL REVIEW D, 1992, 46 (09) :R3703-R3707

[7] Observation of high momentum ηl production in B decays [J].

Browder, TE ;

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 .

PHYSICAL REVIEW LETTERS, 1998, 81 (09) :1786-1790

[8]

BRUN R, DDEE841 CERN

[9] Review of Particle Physics [J].

The European Physical Journal C - Particles and Fields, 1998, 3 (1-4) :1-783

[10] PARITY DETERMINATION FOR THE NEW GENERATION OF HEAVY NEUTRAL MESONS [J].

CHANG, NP ;

NELSON, CA .

PHYSICAL REVIEW D, 1979, 20 (11) :2923-2927

← 1 2 3 →