Publication

Observation of Two Charged Bottomoniumlike Resonances in Y(5S) Decays

Olivier Schneider, Remi Léandre Albert Louvot
2012
Journal Articles

Abstract

We report the observation of two narrow structures in the mass spectra of the pi(+/-) Y(nS) (n = 1, 2, 3) and pi(+/-) h(b)(mP) (m = 1, 2) pairs that are produced in association with a single charged pion in Y(5S) decays. The measured masses and widths of the two structures averaged over the five final states are M-1 = (10 607.2 +/- 2.0) MeV/c(2), Gamma(1) =(18.4 +/- 2.4) MeV, and M-2 = (10 652.2 +/- 1.5) MeV/c(2), Gamma(2) = (11.5 +/- 2.2) MeV. The results are obtained with a 121.4 fb(-1) data sample collected with the Belle detector in the vicinity of the Y(5S) resonance at the KEKB asymmetric-energy e(+)e(-) collider.

Official source

https://infoscience.epfl.ch/entities/publication/f2d8977c-e4d1-48cc-bbc1-8d6d373c6e77

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Observation of Two Charged Bottomoniumlike Resonances in Y(5S) Decays

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