Charmed-strange Mesons Experimental Results

TL;DR

This paper reports the discovery of two new narrow charm-strange meson states, DsJ(2317) and DsJ(2460), observed in various decay modes, contributing to understanding P-wave charm anti-strange mesons.

Contribution

It presents experimental evidence for two new charm-strange mesons and discusses their properties and possible theoretical interpretations.

Findings

Observation of DsJ(2317) in Ds pi0 mode

Observation of DsJ(2460) in Ds* pi0, Ds gamma, and Ds pi+ pi- modes

Identification of these states as 0+ and 1+ P-wave charm anti-strange mesons

Abstract

Two new states in the charm strange sector, DsJ(2317) and DsJ(2460), have recently been discovered at electron positron collider experiments. The new states are first observed in the dominant Ds pi0 and Ds* pi0 modes respectively and are very narrow. They are consistent with 0+ and 1+ P-wave charm anti-strange mesons. The DsJ(2460) meson is also observed in Ds gamma and Ds pi+ pi- modes. A review of the discoveries and possible explanations is given.