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Production of exotic tetraquarks QQ q q in heavy-ion collisions at the LHC PRODUCTION of EXOTIC TETRAQUARKS QQ q q in ⋯ C. E. FONTOURA et al.
(2019-05-01)
We investigate the production of exotic tetraquarks, QQqqTQQ (Q=c or b and q=u or d), in relativistic heavy-ion collisions using the quark coalescence model. The TQQ yield is given by the overlap of the density matrix of ...
Production of exotic tetraquarks QQ(q)over-bar (q)over-bar in heavy-ion collisions at the LHC
(Amer Physical Soc, 2019-05-28)
We investigate the production of exotic tetraquarks, QQ (q) over bar (q) over bar T-QQ (Q = c or b and q = u or d), in relativistic heavy-ion collisions using the quark coalescence model. The T-QQ yield is given by the ...
QCD sum rules for the 'Z POT + IND C' (3900) state.
(World Scientific Publishing Company, 2014-01-22)
We use the QCD sum rules to study the recently observed charmonium-like structure
Z+
c (3900) as a tetraquark state. We evaluate the three-point function and extract the
coupling constants of the Z+
c J/ψ π+, Z+
c ηc ...
Tetraquark production in hadronic collisions
(Karger, 2016)
We develop a formalism to study the tetraquark production in hadronic collisions. We focus on double parton scattering and formulate a version of the color evaporation model for the production of the T-4c tetraquark, a ...
Issues and Opportunities in Exotic Hadrons
(Chinese Physical Soc, 2016-04-01)
The last few years have been witness to a proliferation of new results concerning heavy exotic hadrons. Experimentally, many new signals have been discovered that could be pointing towards the existence of tetraquarks, ...
Nuclear effects on tetraquark production by double parton scattering
(E D P Sciences, 2017)
In this work we study the nuclear effects in exotic meson production. We estimate the total cross section as a function of the energy for pPb scattering using a version of the color evaporation model (CEM) adapted to Double ...
Y(4260) as a mixed charmonium-tetraquark state
(AMER PHYSICAL SOCCOLLEGE PK, 2012)
Using the QCD sum rule approach we study the Y(4260) state assuming that it can be described by a mixed charmonium-tetraquark current with J(PC) = 1(--) quantum numbers. For the mixing angle around theta approximate to ...
The meson Z(+) (4430) as a tetraquark state
(ELSEVIER SCIENCE BV, 2009)
We test the validity of the QCD sum rules applied to the meson Z(+)(4430). by considering a diquark-antidiquark type of current with J(P) = 0(-) and with J(P) = 1(-). We find that, with the studied currents, it is possible ...
Width of exotics from QCD sum rules : Tetraquarks or molecules?
(AMER PHYSICAL SOC, 2008)
We investigate the widths of the recently observed charmonium like resonances X(3872), Z(4430), and Z(2)(4250) using QCD sum rules. Extending previous analyses regarding these states as diquark-antiquark states or molecules ...