Large production rate of new $B^0_s \pi^{\pm}$ and $D^{\pm}_s \pi^{\pm}$ states in high energy multi-production process

TL;DR

This paper investigates the unexpectedly high production rates of certain exotic meson states in high-energy collisions, proposing a new resonance production model and analyzing detection challenges.

Contribution

It introduces an inclusive resonance production formulation to explain large production rates and discusses detection issues related to pion momentum in these states.

Findings

Large production rates of $B^0_s o ext{states}$ and $D_s o ext{states}$ are predicted.

Standard models cannot account for the observed high production rates.

Detection of signal pions is hindered by low transverse momentum requirements.

Abstract

The production rate of the X(5568) observed by D0 collabotation is quite large and can not be understood by various general hadronization mechanism. We propose an inclusive resonance production formulation to calculate the cross section and extract the value of the effective wave function at origin. Based on these results we suspect X($D_s \pi^{\pm}$) can be copiously produced and observable at high enenrgy scatterings (the relative production ratio to D_s is larger than 10 %). In the updated version the discussions on cluster model and FI are added. Both cases can not give large rate. Then we show that pion in X(5568) decay can only gain a very small momentum. In the pseudo-rapidity region [2,5], large part of the signal pions will be dismissed by the detector since the transverse mometum is too small and/or total momentum too small. If further requirement on pion tranverse mometum larger than 1GeV/c added, almost all signal pions are rejected. But for the charm partner, this problem does not exist since the charm partner can give a larger boost factor. A 3D distribution of signal pions are added