Study of B Decays to Charmonium States: B-->eta(c)K and B --> chi(c0)K

Study of B Decays to Charmonium States: B-->eta(c)K and B --> chi(c0)K

In a sample of 9.66x10(6)B 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(c)K+) = (0.69(+0.26)(-0.21)+/-0.08+/-0.20)x10(-3) and B(B degrees -->eta(c)K degrees ) = (1.09(+0.55)(-0.42)+/-0.12+/-0...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Physical review letters 2001-01, Vol.86 (1), p.30-34
Hauptverfasser: Edwards, KW, 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, Hinson, JW, Lee, J, Miller, DH, Shibata, EI, Shipsey, IP, Pavlunin, V, V, Cronin-Hennessy, D, Lyon, AL, Thorndike, EH, Jessop, CP, Marsiske, H, Perl, ML, Savinov, V, V, Ugolini, D, Zhou, X, Coan, TE, Fadeyev, V, V, Maravin, Y, Narsky, I, 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, Viehhauser, G, Wang, JC, Wolf, A, Wu, J, Kopp, S, Mahmood, AH, Csorna, SE, Danko, I, I, McLean, KW, Márka, S, Xu, Z, Godang, R, Kinoshita, K, Lai, IC, Schrenk, S, Bonvicini, G
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:In a sample of 9.66x10(6)B 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(c)K+) = (0.69(+0.26)(-0.21)+/-0.08+/-0.20)x10(-3) and B(B degrees -->eta(c)K degrees ) = (1.09(+0.55)(-0.42)+/-0.12+/-0.31)x10(-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(c)) = 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(c0)K+)chi(c0)K degrees )
ISSN:1079-7114