scholarly journals Heavy baryon production with an instanton interaction

2020 ◽  
Vol 2020 (5) ◽  
Author(s):  
Sang-In Shim ◽  
Atsushi Hosaka ◽  
Hyun-Chul Kim
Keyword(s):  
Reaction Mechanism ◽  
Quark Model ◽  
Heavy Baryon ◽  
Wave Functions ◽  
Baryon Production ◽  
Production Rates ◽  
Charmed Baryons ◽  
Charmed Baryon ◽  
Strange Baryons ◽  
Large Production

Abstract We propose a new reaction mechanism for the study of strange and charmed baryon production. In this mechanism we consider the correlation of two quarks in baryons, so it can be called the two-quark process. As in the previously studied one-quark process, we find large production rates for charmed baryons in comparison with strange baryons. Moreover, the new mechanism causes the excitation of both the $\rho$ mode and the $\lambda$ mode. Using the wave functions for baryons from a quark model, we compute the production rates of various baryon states. We find that the production rates reflect the structure of the wave functions that imply the usefulness of the reactions for the study of baryon structures.

scholarly journals Recent developments in charmed baryon spectroscopy

2018 ◽  
Vol 191 ◽  
pp. 02013
Author(s):  
Elena Solovieva
Keyword(s):  
Quark Model ◽  
Excited States ◽  
Energy Levels ◽  
Ground States ◽  
Charmed Baryons ◽  
Charmed Baryon ◽  
Recent Developments ◽  
Baryon Spectroscopy

An overview of recent developments in charmed baryon spectroscopy is given. The classification of charmed baryons is presented, a quark model for ground states is briefly described, and the energy levels of excited states are analyzed.

scholarly journals Quark-model calculation of charmed-baryon production by neutrinos

1978 ◽  
Vol 17 (3) ◽  
pp. 709-724 ◽  
Author(s):  
C. Avilez ◽  
T. Kobayashi ◽  
J. G. Körner
Keyword(s):  
Quark Model ◽  
Model Calculation ◽  
Baryon Production ◽  
Charmed Baryon

RECENT CLEO RESULTS ON CHARMED BARYONS

2001 ◽  
Vol 16 (supp01b) ◽  
pp. 495-501
Author(s):  
◽  
HORST SEVERINI
Keyword(s):  
Quark Model ◽  
Excited States ◽  
Ground State ◽  
Quantum Mechanical ◽  
Charmed Baryons ◽  
Charmed Baryon ◽  
Cleo Collaboration ◽  
Theoretical Predictions ◽  
State Formula ◽  
Using Data

Using data recorded by the CLEO II and CLEO II.V detectors at CESR, we report new measurements of the [Formula: see text] and [Formula: see text] masses, and the first measurements of their intrinsic widths. The measured widths of these particles agree with the theoretical predictions. We also present a new measurement of the mass of the [Formula: see text] charmed baryon, observed by its decay into [Formula: see text], and the first observation of a new state which is identified as the [Formula: see text], the isospin partner of the previously discovered [Formula: see text] and [Formula: see text]. The quark model predicts many excited states of Λc and Σc baryons, some of which cannot, because of quantum mechanical conservations rules, decay via one pion to the ground state. We present results of a search for such states decaying via dipion decays into the ground state [Formula: see text] Recently, The CLEO collaboration also reported the existence of a pair of excited Ξc particles decaying into [Formula: see text]. These are thought to be orbitally excited Ξc' s with JP = 3/2-. Here we present a search for the analogous JP=1/2- particles, which are predicted to decay into [Formula: see text].

CH2 + O2: Reaction mechanism, biradical and zwitterionic character, and formation of CH2OO, the simplest Criegee Intermediate

2021 ◽  
Author(s):  
Elham Mazarei ◽  
John R. Barker
Keyword(s):  
Reaction Mechanism ◽  
Wave Functions ◽  
Title Reaction ◽  
Potential Surfaces

The singlet and triplet potential surfaces for the title reaction were investigated using the CBS-QB3 level of theory. The wave functions for some species exhibited multireference character and required the...

scholarly journals Masses of fully heavy tetraquarks $$QQ {\bar{Q}} {\bar{Q}}$$ in an extended relativized quark model

2020 ◽  
Vol 80 (9) ◽  
Author(s):  
Qi-Fang Lü ◽  
Dian-Yong Chen ◽  
Yu-Bing Dong
Keyword(s):  
Quark Model ◽  
Mass Spectra ◽  
Ground States ◽  
Lhcb Collaboration ◽  
Wave Functions ◽  
Recent Measurement ◽  
Heavy Quarkonium ◽  
Radial Excitation ◽  
Broad Structure ◽  
Narrow Structure

AbstractInspired by recent measurement of possible fully charmed tetraquarks in LHCb Collaboration, we investigate the mass spectra of fully heavy tetraquarks $$QQ {\bar{Q}} {\bar{Q}}$$ Q Q Q ¯ Q ¯ in an extended relativized quark model. Our estimations indicate that the broad structure around 6.4 GeV should contain one or more ground states for $$cc {\bar{c}} {\bar{c}}$$ c c c ¯ c ¯ tetraquarks, while the narrow structure near 6.9 GeV can be categorized as the first radial excitation of $$cc {\bar{c}} {\bar{c}}$$ c c c ¯ c ¯ system. Moreover, with the wave functions of the tetraquarks and mesons, the strong decays of tetraquarks into heavy quarkonium pair are qualitatively discussed, which can be further checked by the LHCb and CMS Collaborations.

scholarly journals Charmed baryon decay to a strange baryon plus a pion using QCD sum rules

2019 ◽  
Vol 34 (03n04) ◽  
pp. 1950015 ◽  
Author(s):  
Leonard S. Kisslinger ◽  
Bijit Singha
Keyword(s):  
Sum Rules ◽  
Qcd Sum Rules ◽  
Charmed Baryons ◽  
Charmed Baryon ◽  
Strange Baryon ◽  
Weak Decays ◽  
Baryon Decay

This is an extension of the prediction of strange baryon decays to the decays of charmed baryons using QCD sum rules. Using QCD sum rules, we estimate the decay [Formula: see text]. Although some weak decays of the [Formula: see text] have been measured, since it is difficult to measure [Formula: see text] our estimates should be useful for future experiments.

scholarly journals Symmetries in subatomic multi-quark systems

2018 ◽  
Vol 27 (12) ◽  
pp. 1840003
Author(s):  
J. D. Vergados ◽  
D. Strottman
Keyword(s):  
Quantum Chromodynamics ◽  
Quark Model ◽  
Spin Symmetry ◽  
Wave Functions ◽  
Low Energy ◽  
Isospin Symmetry ◽  
Permutation Symmetry

We discus the role of Quantum Chromodynamics (QCD) in low energy phenomena involving the color-spin symmetry of the quark model. We then combine it with orbital and isospin symmetry to obtain wave functions with the proper permutation symmetry, focusing on multi-quark systems.

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