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2014-05-06

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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/131192

Cross sections for the reactions e+e− → K0SK0L, K0SK0Lπ+π−, K0SK0Sπ+π−, and K0SK0SK+K− from events with initial-state radiation

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https://doi.org/10.1103/PhysRevD.89.092002

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We study the processes e + e − → K 0 S K 0 L γ , K 0 S K 0 L π + π − γ , K 0 S K 0 S π + π − γ , and K 0 S K 0 S K + K − γ , where the photon is radiated from the initial state, providing cross section measurements for the hadronic states over a continuum of center-of-mass energies. The results are based on 469   fb − 1 of data collected with the BABAR detector at SLAC. We observe the ϕ ( 1020 ) resonance in the K 0 S K 0 L final state and measure the product of its electronic width and branching fraction with about 3% uncertainty. We present a measurement of the e + e − → K 0 S K 0 L cross section in the energy range from 1.06 to 2.2 GeV and observe the production of a resonance at 1.67 GeV. We present the first measurements of the e + e − → K 0 S K 0 L π + π − , K 0 S K 0 S π + π − , and K 0 S K 0 S K + K − cross sections and study the intermediate resonance structures. We obtain the first observations of J / ψ decay to the K 0 S K 0 L π + π − , K 0 S K 0 S π + π − , and K 0 S K 0 S K + K − final states.

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Física de partícules, Experiments

Matèries (anglès)

Particle physics, Experiments

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Articles publicats en revistes (Física Quàntica i Astrofísica)

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GRAUGÉS POUS, Eugeni and BABAR Collaboration. Cross sections for the reactions e+e− → K0SK0L, K0SK0Lπ+π−, K0SK0Sπ+π−, and K0SK0SK+K− from events with initial-state radiation. Physical Review D. 2014. Vol. 89, num. 9, pags. 092002. ISSN 1550-7998. [consulted: 21 of August of 2026]. Available at: https://hdl.handle.net/2445/131192

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