Aubert, B. et al. (2005) e+e-→π+π-π+π-, K+K-π+π-, and K+K-K+K- cross sections at center-of-mass energies 0.5–4.5 GeV measured with initial-state radiation. Physical Review D, 71 (5). 052001. ISSN 1550-7998
Metadata only available from this repository.Abstract
We study the process e+e-→π+π-π+π-γ, with a hard photon radiated from the initial state. About 60 000 fully reconstructed events have been selected from 89 fb-1 of BABAR data. The invariant mass of the hadronic final state defines the effective e+e- e+e- center-of-mass energy, so that these data can be compared with the corresponding direct e+e- measurements. From the 4π -mass spectrum, the cross section for the process e+e- →π+π-π+π- is measured for center-of-mass energies from 0.6 to 4.5 GeV. The uncertainty in the cross section measurement is typically 5%. We also measure the cross sections for the final states K+K-π+π- and K+K-K+K-. We observe the J/ψ in all three final states and measure the corresponding branching fractions. We search for X(3872) in J/ψ(→μ+μ-)π+π- and obtain an upper limit on the product of the e+e- width of the X(3872) and the branching fraction for X(3872)→J/ψπ+π-.
Item Type: | Article |
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Subjects: | Q Science > QC Physics |
Schools: | School of Applied Sciences |
Related URLs: | |
Depositing User: | Sharon Beastall |
Date Deposited: | 30 Jun 2011 09:02 |
Last Modified: | 28 Aug 2021 11:08 |
URI: | http://eprints.hud.ac.uk/id/eprint/10837 |
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