Results 11 to 20 of about 38,607,398 (267)

Tetra- and Penta-Quark Structures in the Constituent Quark Model [PDF]

open access: yesSymmetry, 2020
With the development of high energy physics experiments, a large amount of exotic states in the hadronic sector have been observed. In order to shed some light on the nature of the tetraquark and pentaquark candidates, a constituent quark model, along with the Gaussian expansion method, has been employed systematically in real- and complex-range ...
Jorge Segovia, Jialun Ping, Gang Yang
exaly   +5 more sources

Heavy Tetraquarks in the Relativistic Quark Model [PDF]

open access: yesUniverse, 2021
We give a review of the calculations of the masses of tetraquarks with two and four heavy quarks in the framework of the relativistic quark model based on the quasipotential approach and QCD.
Vladimir Galkin, Elena Savchenko
exaly   +2 more sources

Fully Heavy Tetraquark Spectroscopy in the Relativistic Quark Model [PDF]

open access: yesSymmetry, 2022
Masses of the ground and excited (1P, 2S, 1D, 2P, 3S) states of the fully heavy tetraquarks, composed of charm (c) and bottom (b) quarks and antiquarks, are calculated in the diquark–antidiquark picture within the relativistic quark model based on the ...
Vladimir Galkin   +2 more
exaly   +2 more sources

Tetraquarks and Pentaquarks from Quark Model Perspective

open access: yesSymmetry, 2023
According to the classification of the quark model, the hadrons going beyond three-quark baryon and quark-antiquark meson pictures are called exotic hadrons. Many new hadrons have been observed since 2003, some of which exhibit exotic behaviors.
Hongxia Huang   +2 more
exaly   +2 more sources

Excited bottom-charmed mesons in a nonrelativistic quark model [PDF]

open access: yesPhysical Review D, 2019
Using the newly measured masses of ${B}_{c}(1S)$ and ${B}_{c}(2S)$ from the CMS Collaboration and the $1S$ hyperfine splitting determined from the lattice QCD as constraints, we calculate the ${B}_{c}$ mass spectrum up to the $6S$ multiplet with a ...
Long-Cheng Gui, Qi-Fang Lu
exaly   +2 more sources

Excited bottom and bottom-strange mesons in the quark model [PDF]

open access: yesPhysical Review D, 2016
In order to understand the possible $q\overline{q}$ quark-model assignments of the ${B}_{J}(5840)$ and ${B}_{J}(5960)$ recently reported by the LHCb Collaboration, we evaluate mass spectra, strong decays, and radiative decays of bottom and bottom-strange
En Wang, Qi-Fang Lu
exaly   +2 more sources

Quark model estimate of hidden-charm pentaquark resonances [PDF]

open access: yesPhysical Review C, 2018
A quark model, which reproduces the ground-state mesons and baryons, i.e., the threshold energies, is applied to the $qqqc\bar c$ configurations, where $q$ is a light quark and~$c$ the charmed quark.
Jean-Marc Richard   +2 more
exaly   +2 more sources

Masses of doubly heavy-quark baryons in an extended chromomagnetic model [PDF]

open access: yesPhysical Review D, 2018
We extend the chromomagnetic model by further considering the effect of color interaction. The effective mass parameters between quark pairs ($m_{qq}$ or $m_{q\bar{q}}$) are introduced to account both the effective quark masses and the color interaction ...
Wei-Zhen Deng, Xin-Zhen Weng
exaly   +2 more sources

Search for a heavy top-quark partner in final states with two leptons with the ATLAS detector at the LHC [PDF]

open access: yes, 2012
Atlas Collaboration contributor: Paul Douglas Jackson and Nitesh Soni of School of Chemistry and Physics, University of Adelaide, North Terrace Campus, 5000, SA, Australia. Extent: 35p.The results of a search for direct pair production of heavy top-quark
G. Khoriauli   +999 more
core   +8 more sources

Quark Structure of the X (4500), X (4700) and χc(4P,5P) States

open access: yesFrontiers in Physics, 2021
We study some of the main properties (masses and open-flavor strong decay widths) of 4P and 5P charmonia. While there are two candidates for the χc0(4P,5P) states, the X(4500) and X(4700), the properties of the other members of the χc(4P,5P) multiplets ...
J. Ferretti, E. Santopinto
doaj   +1 more source

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