Exotic hadron bound state production at hadron colliders

Abstract

Chinese Physics C Vol. 41, No. 8 (2017) 083106 Exotic hadron bound state production at hadron colliders * Yi Jin( Abstract: The non-relativistic wave function framework is applied to study the production and decay of exotic hadrons, which can be effectively described as bound states of other hadrons. Employing the factorized formulation, with the help of event generators, we investigate the production of exotic hadrons in multiproduction processes at high energy hadron colliders. This study provides crucial information for the measurements of the relevant exotic hadrons.

NewBs0π±andDs±π±states in high energy multiproduction process

“…So this plays another support for us to deal it independently, ignoring the constrains from the unitarity as well as the general hadronization mechanism applied to the general hadrons. For other cases, the ζ is quite small, as the ansatz for the string model, a value of order of magnitude 10 per cent, so even the other combination can lead to a 4-quark state but no observable signal [7].…”

“…Now one can study their production mechanism which is tightly related with the inner structure of the relevant hadrons [7,8], in multi-production processes at high energy colliders like Tevatron and LHC. It is noticeable that in the high energy multi-production processes, the space-time evolution of the quark system and the produced hadron system are quite different from that of the decay processes.…”

“…When just the bottom quark is replaced by the charm quark in X(5568), assuming the structure hence the production mechanism for the corresponding four-quark charm hadron do not change, the production of the 'new D ± s π ± state' is studied. As mentioned above, the production mechanism is tightly related with the inner structure of the relevant hadron [7,8]. Our analysis starts from assuming X(5568) as four quark state and directly produced together with other general mesons and baryons, employing various hadronization mechanism [9].…”

“…All these possibilities add up to 1. This reflects the unitarity of the combination process [7,17], i.e., one quark can combine with many other quarks or clusters, according to some law, but the total probability must be 1, since the quark is confined and has to go into a hadron. For the calculation of ρ here, we can introduce a relative probability ζ = (b combines with any qq ′q′′ )/(b combines with anyq).…”

“…The key point is to describe its production in two steps, whatsoever taking it as a bound state of hadrons or 2-quark clusters, or even, two pieces of strings. And since this special production mechanism, the probability is not added with others to exhaust the unitarity constrain [7,17,18] mentioned above, besides not applied to other light flavours.…”