Study of Upsilon(1S) radiative decays to gamma pi(+)pi(-) and gamma K+ K-



Lees, JP, Poireau, V, Tisserand, V, Grauges, E, Giannuzzi, F, Palano, A, Eigen, G, Brown, DN, Kolomensky, Yu G, Fritsch, M
et al (show 228 more authors) (2018) Study of Upsilon(1S) radiative decays to gamma pi(+)pi(-) and gamma K+ K-. PHYSICAL REVIEW D, 97 (11).

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Abstract

We study the (1S) radiative decays to γπ+π- and γK+K- using data recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e+e- collider at center-of-mass energies at the (2S) and (3S) resonances. The (1S) resonance is reconstructed from the decay (nS)→π+π-(1S), n=2, 3. Branching fraction measurements and spin-parity analyses of (1S) radiative decays are reported for the I=0 S-wave and f2(1270) resonances in the π+π- mass spectrum, the f2′(1525) and f0(1500) in the K+K- mass spectrum, and the f0(1710) in both.

Item Type: Article
Depositing User: Symplectic Admin
Date Deposited: 28 Feb 2019 16:11
Last Modified: 19 Jan 2023 01:00
DOI: 10.1103/PhysRevD.97.112006
Open Access URL: https://doi.org/10.1103/PhysRevD.97.112006
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3033599