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http://hdl.handle.net/2445/131449
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DC Field | Value | Language |
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dc.contributor.author | Garra Ticó, Jordi | - |
dc.contributor.author | Graugés Pous, Eugeni | - |
dc.contributor.author | BABAR Collaboration | - |
dc.date.accessioned | 2019-04-04T13:54:53Z | - |
dc.date.available | 2019-04-04T13:54:53Z | - |
dc.date.issued | 2007-07-31 | - |
dc.identifier.issn | 1550-7998 | - |
dc.identifier.uri | http://hdl.handle.net/2445/131449 | - |
dc.description.abstract | We study the processes e + e − → K + K − π + π − γ , K + K − π 0 π 0 γ 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 − π 0 π 0 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 ) f 0 ( 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 ( 2 S ) in some modes, and measure the corresponding branching fractions. We see no signal for the Y ( 4260 ) and obtain an upper limit of B Y ( 4260 ) → ϕ π + π − ⋅ Γ Y e e < 0.4 eV at 90% C.L. | - |
dc.format.extent | 33 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | American Physical Society | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.76.012008 | - |
dc.relation.ispartof | Physical Review D, 2007, vol. 76, num. 1, p. 012008 | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevD.76.012008 | - |
dc.rights | (c) American Physical Society, 2007 | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Física de partícules | - |
dc.subject.classification | Experiments | - |
dc.subject.other | Particle physics | - |
dc.subject.other | Experiments | - |
dc.title | e+e− → K+K−π+π−, K+K−π0π0 and K+K−K+K− cross sections measured with initial-state radiation | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 558196 | - |
dc.date.updated | 2019-04-04T13:54:54Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
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558196.pdf | 2.23 MB | Adobe PDF | View/Open |
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