TY  - JOUR
AU  - BABAR Collaboration (del Amo Sanchez, P. et al
AU  - Lopez-March, N.
AU  - Martinez-Vidal, F.
AU  - Milanes, D. A.
AU  - Oyanguren, A.
PY  - 2011
DA  - 2011//
TI  - Observation of eta(c) (1S) and eta(c) (2S) decays to K(+)K(-) pi(+) pi(-) pi(0) in two-photon interactions
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 012004
EP  - 9pp
VL  - 84
IS  - 1
PB  - Amer Physical Soc
AB  - We study the processes gamma gamma -> K(S)(0) K(-+) pi(-+) and gamma gamma -> K(+)K(-) pi(+)pi(-)pi(0) using a data sample of 519: 2fb(-1) recorded by the BABAR detector at the PEP-II asymmetric-energy e(+)e(-) collider at center-of-mass energies near the Y(nS) (n = 2, 3, 4) resonances. We observe the eta(c) (1S), chi(c0) (1P) and eta(c) (2S) resonances produced in two-photon interactions and decaying to K(+)K(-) pi(+)pi(-)pi(0), with significances of 18.1, 5.4 and 5.3 standard deviations (including systematic errors), respectively, and report 4.0 sigma evidence of the X(c2)(1P) decay to this final state. We measure the eta(c)(2S) mass and width in K(S)(0) K(+-) pi(+-) decays, and obtain the values m(eta(c)(2S)) = 3638: 5 +/- 1.5 +/- 0.8 MeV/c(2) and Gamma(eta(c)(2S)) = 13.4 +/- 4: 6 +/- 3.2 MeV, where the first uncertainty is statistical and the second is systematic. We measure the two-photon width times branching fraction for the reported resonance signals, and search for the X(c2) (2P) resonance, but no significant signal is observed.
SN  - 1550-7998
UR  - http://arxiv.org/abs/arXiv:1103.3971
UR  - https://doi.org/10.1103/PhysRevD.84.012004
DO  - 10.1103/PhysRevD.84.012004
LA  - English
N1  - WOS:000292768900001
ID  - BABARCollaborationdelAmoSanchez_etal2011
ER  -