TY - JOUR
T1 - Study of B-meson decays to $\eta_c K^ (*) ,\, \eta_c(2S) K^ (*) $ and $\eta_c \gamma K^(*)$
AU - Lafferty, George
AU - Alwyn, Kim
AU - Barlow, Nicholas
AU - Barlow, Roger
AU - Chia, Yaw
AU - Edgar, Christina
AU - West, Timothy
AU - Yi, Jong
AU - The BaBar Collaboration
PY - 2008
Y1 - 2008
N2 - We study two-body B-meson decays to a charmonium state (ηc, ηc(2S) or hc) and a K+ or K*0(892)meson using a sample of 349 fb−1 of data collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at the Stanford Linear Accelerator Center. We measure B(B0→ηcK*0)=(5.7±0.6(stat)±0.9(syst))×
0−4, B(B0→ηc(2S)K*0)<3.9×10−4, B(B+→hcK+)×B(hc→ηcγ)<4.8×10−5 and B(B0→hcK*0)×B(hc→ηcγ)<2.2×10−4 at the 90% C.L., and B(ηc(2S)→K¯¯¯¯Kπ)=(1.9±0.4(stat)±1.1(syst))%. We also measure the mass and width of the ηc meson to be m(ηc)=(2985.8±1.5(stat)±3.1(syst)) MeV/c2 and Γ(ηc)=(36.3+3.7−3.6(stat)±4.4(syst)) MeV.
AB - We study two-body B-meson decays to a charmonium state (ηc, ηc(2S) or hc) and a K+ or K*0(892)meson using a sample of 349 fb−1 of data collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at the Stanford Linear Accelerator Center. We measure B(B0→ηcK*0)=(5.7±0.6(stat)±0.9(syst))×
0−4, B(B0→ηc(2S)K*0)<3.9×10−4, B(B+→hcK+)×B(hc→ηcγ)<4.8×10−5 and B(B0→hcK*0)×B(hc→ηcγ)<2.2×10−4 at the 90% C.L., and B(ηc(2S)→K¯¯¯¯Kπ)=(1.9±0.4(stat)±1.1(syst))%. We also measure the mass and width of the ηc meson to be m(ηc)=(2985.8±1.5(stat)±3.1(syst)) MeV/c2 and Γ(ηc)=(36.3+3.7−3.6(stat)±4.4(syst)) MeV.
U2 - 10.1103/PhysRevD.78.012006
DO - 10.1103/PhysRevD.78.012006
M3 - Article
SN - 1550-2368
SN - 2470-0029
VL - 78
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 1
M1 - 012006
ER -