X(3872)production in high energy heavy ion collisions

2014/05/29 by A. Martinez Torres, A. Martínez Torres, Kanchan Khemchandani +4 · 1 citation
Chemistry · Mathematics · Physics and Astronomy · #Atomic physics #Bar (unit) #Chemistry #Combinatorics #Crystallography #Formalism (music) #Hadron #High-Energy Particle Collisions Research #Mathematics #Meson #Particle physics #Particle physics theoretical and experimental studies #Physics #Production (economics) #Quantum Chromodynamics and Particle Interactions #Vertex (graph theory) #X(3872) #hep-ph #nucl-th

paper · pdf · doi:10.1103/physrevd.90.114023

published as Phys. Rev. D 90, 114023 (2014)

arxiv created 2014/05/29 · openalex publication_date 2014/12/18 · arxiv updated 2014/12/24 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We have determined the production cross sections of the X(3872) state in the reactions DD\ensuremath→\ensuremathπX, D^*D\ensuremath→\ensuremathπX, and D^*D^*\ensuremath→\ensuremathπX, information which is useful for studies of the X(3872) meson abundance in heavy ion collisions. We construct a formalism considering X as a molecular bound state of D⁰D^*0\ensuremath-c.c., D^\ensuremath-D^*+\ensuremath-c.c., and D_s^\ensuremath-D_s^*+\ensuremath-c.c. To obtain the amplitudes related to these processes we have made use of effective field Lagrangians. The evaluation of the cross section of the processes involving D^* meson(s) requires the calculation of an anomalous vertex, XD^*D^*, which has been obtained by considering triangular loops motivated by the molecular nature of X(3872). Proceeding in this way, we have evaluated the cross section for the reaction D^*D\ensuremath→\ensuremathπX, and find that the diagrams involving the XD^*D^* vertex give a large contribution. Encouraged by this finding we estimate the XD^*D^* coupling, which turns out to be 1.95\ifmmode±\else\textpm\fi0.22. We then use it to obtain the cross section for the reaction D^*D^*\ensuremath→\ensuremathπX and find that, in this case too, the XD^*D^* vertex is relevant. We also discuss the role of the charged components of X in the determination of the production cross sections.

Citations

• The D threshold resonance
• Observation and Properties of theX(3872)Decaying toJ/ψπ+π−inpp¯Collisions ats=1.96 TeV
• J/ψabsorption byπandρmesons in a meson exchange model with anomalous parity interactions
• Global aspects of current algebra
• Heavy quark symmetry predictions for weakly boundB-meson molecules
• One-photon decay of the tetraquark stateX(3872)→γ+J/ψin a relativistic constituent quark model with infrared confinement
• Is theρMeson a Dynamical Gauge Boson of Hidden Local Symmetry?
• Short range structure in the X(3872)
• Diquark-antidiquark states with hidden or open charm and the nature ofX(3872)
• Hadronic interactions of theJ/ψ
• Model of charmonium absorption by light mesons
• Meson loops in the f0(980) and a0(980) radiative decays into ρ , ω
• Study of theB−→J/ψK−π+π−decay and measurement of theB−→X(3872)K−branching fraction
• Pion interactions in theX(3872)
• Production of theX(3872)at the Tevatron and the LHC
• Experimental and theoretical challenges in the search for the quark–gluon plasma: The STAR Collaboration's critical assessment of the evidence from RHIC collisions
• Observation of a New Narrow Charmonium State in Exclusive B+-->K+ pi+pi- J/psi Decays
• Charmonium–pion cross section from QCD sum rules
• Charm Physics

Cited by

• Production of multicharmed hadrons by recombination in heavy ion collisions