Test of h1(1830) made of with the decay

Xiu-Lei Ren; Li-Sheng Geng; E. Oset; Jie Meng

doi:10.1140/epja/i2014-14133-7

EPJ

Test of h₁(1830) made of $K^* \bar K^*$ with the $\eta _c \to \varphi K^* \bar K^*$ decay

Xiu-Lei Ren¹, Li-Sheng Geng¹^*, E. Oset¹^,2 and Jie Meng¹^,3^,4

¹ School of Physics and Nuclear Energy Engineering & International Research Center for Nuclei and Particles in the Cosmos, Beihang University, 100191, Beijing, China
² Departamento de Física Teórica and IFIC, Centro Mixto Universidad de Valencia-CSIC, Institutos de Investigación de Paterna, Apartado 22085, 46071, Valencia, Spain
³ State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, 100871, Beijing, China
⁴ Department of Physics, University of Stellenbosch, 7602, Stellenbosch, South Africa

Received: 9 May 2014
Revised: 23 June 2014
Accepted: 3 July 2014
Published online: 27 August 2014

Abstract

We present a new reaction, complementary to $J/\psi \to \eta K^{*0} \bar K^{*0}$ from which an h ₁ resonance with mass around 1830 MeV was reported from a BESIII experiment. The new reaction is $\eta _c \to \varphi K^* \bar K^*$ , or $\eta _c (2S) \to \varphi K^* \bar K^*$ . Using the information from the analysis of $J/\psi \to \eta K^{*0} \bar K^{*0}$ , we find that the $K^* \bar K^*$ invariant mass distribution for those two Η decays exhibits a clear peak around 1830 MeV perfectly distinguishable from what one obtains with pure phase space. We suggest the implementation of these reactions to assert the existence of this elusive resonance which, by its nature as a vector-vector molecule with 0⁻(1⁺⁻) quantum numbers, only couples to the $K^* \bar K^*$ channel.

12 Internat. Congress of the Balkan Physical Union
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EPJ

Test of h₁(1830) made of $K^* \bar K^$ with the $\eta _c \to \varphi K^ \bar K^*$ decay

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