Authors

Chen, S
Fast, J
Hinson, JW
Lee, J
Miller, DH
Shibata, EI
Shipsey, IPJ
Pavlunin, V
Cronin-Hennessy, D
Lyon, AL
Thorndike, EH
Savinov, V
Coan, TE
Fadeyev, V
Gao, YS
Maravin, Y
Narsky, I
Stroynowski, R
Ye, J
Wlodek, T
Artuso, M
Ayad, R
Boulahouache, C
Bukin, K
Dambasuren, E
Karamov, S
Majumder, G
Moneti, GC
Mountain, R
Schuh, S
Skwarnicki, T
Stone, S
Wang, JC
Wolf, A
Wu, J
Kopp, S
Kostin, M
Mahmood, AH
Csorna, SE
Danko, I
McLean, KW
Xu, Z
Godang, R
Bonvicini, G
Cinabro, D
Dubrovin, M
McGee, S
Zhou, GJ
Lipeles, E
Pappas, SP
Schmidtler, M
Shapiro, A
Sun, WM
Weinstein, AJ
Wurthwein, F
Jaffe, DE
Masek, G
Paar, HP
Potter, EM
Prell, S
Asner, DM
Eppich, A
Hill, TS
Morrison, RJ
Briere, RA
Chen, GP
Gritsan, A
Alexander, JP
Baker, R
Bebek, C
Berger, BE
Berkelman, K
Blanc, F
Boisvert, V
Cassel, DG
Drell, PS
Duboscq, JE
Ecklund, KM
Ehrlich, R
Foland, AD
Gaidarev, P
Gibbons, L
Gittelman, B
Gray, SW
Hartill, DL
Heltsley, BK
Hopman, PI
Hsu, L
Jones, CD
Kandaswamy, J
Kreinick, DL
Lohner, M
Magerkurth, A
Meyer, TO
Mistry, NB
Nordberg, E
Palmer, M
Patterson, JR
Peterson, D
Riley, D
Romano, A
Thayer, JG
Urner, D
Valant-Spaight, B
Viehhauser, G
Warburton, A
Avery, P
Prescott, C
Rubiera, AI
Stoeck, H
Yelton, J
Brandenburg, G
Ershov, A
Kim, DYJ
Wilson, R
Yamamoto, H
Bergfeld, T
Eisenstein, BI
Ernst, J
Gladding, GE
Gollin, GD
Hans, RM
Johnson, E
Karliner, I
Marsh, MA
Plager, C
Sedlack, C
Selen, M
Thaler, JJ
Williams, J
Edwards, KW
Janicek, R
Patel, PM
Sadoff, AJ
Ammar, R
Bean, A
Besson, D
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
Eckart, 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

Citation

S. Chen et al., Study of chi(c1) and chi(c2) meson production in B meson decays - art. no.031102, PHYS REV D, 6303(3), 2001, pp. 1102

Citations number

22

Language

INGLESE

art.tipo

Article

Categorie Soggetti

Physics

Journal title

PHYSICAL REVIEW D

ISSN journal

0556-2821
→ ACNP

Volume

6303

Issue

3

Year of publication

2001

Database

ISI

SICI code

0556-2821(20010201)6303:3<1102:SOCACM>2.0.ZU;2-X

Abstract

Using a sample of 9.7 X 10(6) B (B) over bar meson pairs collected with the
CLEO detector, we study B decays to the chi (c1) and chi (c2) charmonia st
ates, which are reconstructed via their radiative decays to J/psi. We first
measure the branching fraction for inclusive chi (c1) production in B deca
ys to be B(B --> chi X-c1) = (4.14 +/- 0.31 +/- 0.40) X 10(-3) where the fi
rst uncertainty is statistical and the second one is systematic. We derive
the branching fractions for direct chi (c1) and chi (c2) production in B de
cays by subtracting the known contribution of the decay chain B --> psi (2S
)X with psi (2S)--> chi (c1,2)gamma. We obtain B[B --> chi (c1) (direct)X]
=(3.83 +/- 0.31 +/- 0.40) X 10(-3). No statistically significant signal for
chi (c2) production is observed in either case. Using the Feldman-Cousins
approach, we determine the 95% confidence intervals to be [0.2.2.0] X 10(-3
) for B(B --> chi X-c2). [0.0,1.7] X 10(-3) for B[B --> chi (c2) (direct)X]
, and [0.00,0.44] for the ratio Gamma [B --> chi (c2) (direct)X-y]/Gamma [B
--> chi (c1) (direct)X-s]. We also measure the branching ratio Gamma [B --
> chi (c2) (direct)X-y]/Gamma [B --> chi (c1) (direct)X-s] for different X-
s configurations by reconstructing B decays into exclusive final states wit
h J/psi, gamma, a kaon, and up to four pions. For all the X-s configuration
s, we observe a strong chi (c1) signal yet no statistically significant chi
(c2) signal. We discuss how our results compare with theoretical predictio
ns in different models of charmonium production.