Aubert, B. et al. (2007) e+e-→K+K-π+π-, K+K-π0π0 and K+K-K+K- cross sections measured with initial-state radiation. Physical Review D, 76 (1). 012008. ISSN 1550-7998
Metadata only available from this repository.Abstract
We study the processes e+e-→K+K-π+π-γ, K+K-π0π0γ and K+K-K+K-γ, where the photon is radiated from the initial state. About 34 600, 4400 and 2300 fully reconstructed events, respectively, are selected from 232 fb-1 of BABAR data. The invariant mass of the hadronic final state defines the effective e+e- center-of-mass energy, so that the K+K-π+π-γ data can be compared with direct measurements of the e+e-→K+K-π+π- reaction; no direct measurements exist for the e+e-→K+K-π0π0 or e+e-→K+K-K+K- reactions. Studying the structure of these events, we find contributions from a number of intermediate states, and we extract their cross sections where possible. In particular, we isolate the contribution from e+e-→ϕ(1020)f0(980) and study its structure near threshold. In the charmonium region, we observe the J/ψ in all three final states and several intermediate states, as well as the ψ(2S) in some modes, and measure the corresponding branching fractions. We see no signal for the Y(4260) and obtain an upper limit of BY(4260)→ϕπ+π-·ΓeeY<0.4 eV at 90% C.L.
Item Type: | Article |
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Subjects: | Q Science > QC Physics |
Schools: | School of Applied Sciences |
Depositing User: | Sharon Beastall |
Date Deposited: | 10 Jun 2011 08:37 |
Last Modified: | 28 Aug 2021 11:07 |
URI: | http://eprints.hud.ac.uk/id/eprint/10750 |
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