@misc{10481/78596,
year = {2022},
month = {11},
url = {https://hdl.handle.net/10481/78596},
abstract = {The LHCb collaboration has found that the production rate of Xð3872Þ in proton-proton collisions
decreases as final state particle multiplicity increases. Moreover, the ALICE experiment at CERN has
observed that the number of deuterons produced increaseswith multiplicity, a behavior that is qualitatively
different from that of the Xð3872Þ. These experimental findings may point to a compact structure for the
Xð3872Þ or, at least, that its hadronization could proceed through a charm-anticharm core. We have
recently used a diffusion Monte Carlo method to solve the 4-body Schrödinger equation that describes the
Xð3872Þ as a c¯cq¯q tetraquark systemwith quantum numbers IGðJPCÞ ¼ 0þð1þþÞ and 1−ð1þþÞ.According
to our structural analysis, the quark–(anti)quark correlations resemble light-meson–heavy-meson
molecules of type ωJ=ψ and ρJ=ψ, rather than the most extended DD¯   interpretation. It was argued
that this fact may be the key to make compatible the molecular features of the Xð3872Þwith its production
observables. The same formalism allows us to compute the first color excited c¯cq¯q tetraquark state with
either IGðJPCÞ ¼ 0þð1þþÞ or 1−ð1þþÞ. A bound-state is found in each channel, their masses are around
4.0 GeV which is an energy region where many new exotic candidates have been collected by the Particle
Data Group. Concerning their structural properties, these states cluster in a compact diquark-antidiquark
arrangement which matches perfectly with a so-called Born-Oppenheimer tetraquark configuration. The
promptly production rates of these states in proton-proton, proton-nucleus and nucleus-nucleus collisions
should fall off equal to or even faster than those of the Xð3872Þ.},
organization = {Spanish Government	P18-FR-5057},
organization = {Junta de Andalucia		
Operativo FEDER Andalucia	PAIDI FQM-205	
PID2019-107844GB-C22	
UHU-1264517},
publisher = {American Physical Society},
title = {X(3872)'s excitation and its connection with production at hadron colliders},
doi = {10.1103/PhysRevD.106.094004},
author = {Gordillo, M. C.},
}