Measurement of e+eωπ0, K*(892)K¯ and K2*(1430)K¯ at s near 10.6 GeV

C. P. Shen et al. (Belle Collaboration)
Phys. Rev. D 88, 052019 – Published 27 September 2013

Abstract

Using data samples of 89fb1, 703fb1, and 121fb1 collected with the Belle detector at the KEKB asymmetric-energy e+e collider at center-of-mass energies 10.52 GeV, 10.58 GeV, and 10.876 GeV, respectively, we study the exclusive reactions e+eωπ0, K*(892)K¯, and K2*(1430)K¯. (Charge-conjugate modes are included implicitly.) Significant signals of ωπ0, K*(892)0K¯0, and K2*(1430)K+ are observed for the first time at these energies, and the energy dependencies of the cross sections are presented. On the other hand, no significant excesses for K*(892)K+ and K2*(1430)0K¯0 are found, and we set limits on the cross section ratios RVP=σB(e+eK*(892)0K¯0)σB(e+eK*(892)K+)>4.3, 20.0, and 5.4, and RTP=σB(e+eK2*(1430)0K¯0)σB(e+eK2*(1430)K+)<1.1, 0.4, and 0.6, for center-of-mass energies of 10.52 GeV, 10.58 GeV, and 10.876 GeV, respectively, at the 90% C.L.

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  • Received 2 September 2013

DOI:https://doi.org/10.1103/PhysRevD.88.052019

© 2013 American Physical Society

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Vol. 88, Iss. 5 — 1 September 2013

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