학술논문
Study of the B- → J/ΨK -π+π- decay and measurement of the B - → X(3872)K- branching fraction
Document Type
article
Author
Aubert, B; Barate, R; Boutigny, D; Couderc, F; Gaillard, JM; Hicheur, A; Karyotakis, Y; Lees, JP; Tisserand, V; Zghiche, A; Palano, A; Pompili, A; Chen, JC; Qi, ND; Rong, G; Wang, P; Zhu, YS; Eigen, G; Ofte, I; Stugu, B; Abrams, GS; Borgland, AW; Breon, AB; Brown, DN; Button-Shafer, J; Cahn, RN; Charles, E; Day, CT; Gill, MS; Gritsan, AV; Groysman, Y; Jacobsen, RG; Kadel, RW; Kadyk, J; Kerth, LT; Kolomensky, YG; Kukartsev, G; LeClerc, C; Lynch, G; Merchant, AM; Mir, LM; Oddone, PJ; Orimoto, TJ; Pripstein, M; Roe, NA; Ronan, MT; Shelkov, VG; Wenzel, WA; Ford, K; Harrison, TJ; Hawkes, CM; Morgan, SE; Watson, AT; Fritsch, M; Goetzen, K; Held, T; Koch, H; Lewandowski, B; Pelizaeus, M; Steinke, M; Boyd, JT; Chevalier, N; Cottingham, WN; Kelly, MP; Latham, TE; Wilson, FF; Cuhadar-Donszelmann, T; Hearty, C; Knecht, NS; Mattison, TS; McKenna, JA; Thiessen, D; Khan, A; Kyberd, P; Teodorescu, L; Blinov, VE; Bukin, AD; Druzhinin, VP; Golubev, VB; Ivanchenko, VN; Kravchenko, EA; Onuchin, AP; Serednyakov, SI; Skovpen, YI; Solodov, EP; Yushkov, AN; Best, D; Bruinsma, M; Chao, M; Eschrich, I; Kirkby, D; Lankford, AJ; Mandelkern, M; Mommsen, RK; Roethel, W; Stoker, DP; Buchanan, C; Hartfiel, BL; Gary, JW; Shen, BC
Source
Physical Review D - Particles, Fields, Gravitation and Cosmology. 71(7)
Subject
Language
Abstract
We study the decay B- → J/ΨK -π+π- using 117×106 BB̄ events collected at the Y(4S) resonance with the BABAR detector at the PEP-II e+e- asymmetric-energy storage ring. We measure the branching fractions ℬ (B- → J/ΨK -π+π-) = (116±7(stat.) ±9(syst.))×10-5 and ℬ (B- → X(3872)K-) × ℬ (X(3872) → J/Ψπ+π -) = (1.28±0.41)×10-5 and find the mass of the X(3872) to be 3873.4±1.4 MeV/c2. We search for the h c narrow state in the decay B- → hcK -, hc → J/Ψπ+π- and for the decay B- → J/ΨD0π-, with D0 → K-π+. We set the 90% C.L. limits ℬ(B- → hcK-) × ℬ(h c → J/Ψπ+π-)