skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Strong decays of heavy-light mesons in a chiral quark model

Abstract

We carry out a systematic study of the heavy-light meson strong decays in a chiral quark model. For the S-wave vectors [D*(2007), D*{sup {+-}}(2010)], P-wave scalars [D{sub 0}*(2400), B{sub 0}*(5730)], and tensors [D{sub 2}*(2460), D{sub s2}*(2573)], we obtain results in good agreement with the experimental data. For the axial vectors D{sub 1}(2420) and D{sub 1}{sup '}(2430), a state mixing scheme between 1{sup 1}P{sub 1} and 1{sup 3}P{sub 1} is favored with a mixing angle {phi}{approx_equal}-(55{+-}5) deg., which is consistent with previous theoretical predictions. The same mixing scheme also applies to D{sub s1}(2460) and D{sub s1}(2536) that accounts for the narrow width of the D{sub s1}(2536) and its dominant decay into D*K. For B{sub 1}(5725) and B{sub 1}{sup '}(5732), such a mixing explains well the decay width of the former but leads to an even broader B{sub 1}{sup '}(5732). Predictions for the strange-bottom axial vectors are also made. For the undetermined meson D*(2640), we find that they fit well in the radially excited state 2{sup 3}S{sub 1} according to its decay mode. The newly observed D{sub sJ}*(2860) strongly favors the D-wave excited state 1{sup 3}D{sub 3}. For D{sub sJ}*(2632) and D{sub sJ}*(2690), we find they are difficult to fit in anymore » D{sub s} excitations in that mass region, if the experimental data are accurate. Theoretical predictions for decay modes of those unobserved states as multiplets of 2S and 1D waves are also presented, which should be useful for the further experimental search for those states.« less

Authors:
 [1];  [1]
  1. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049 (China)
Publication Date:
OSTI Identifier:
21250235
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 78; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevD.78.014029; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CHIRALITY; D MESONS; D S MESONS; D WAVES; EXCITATION; EXCITED STATES; FORECASTING; MASS; MIXING; MULTIPLETS; P WAVES; PARTICLE DECAY; QUARK MODEL; S WAVES; SIMULATION; WEINBERG ANGLE

Citation Formats

Xianhui, Zhong, Theoretical Physics Center for Science Facilities, Chinese Academy of Sciences, Beijing 100049, Qiang, Zhao, Department of Physics, University of Surrey, Guildford, GU2 7XH, and Theoretical Physics Center for Science Facilities, Chinese Academy of Sciences, Beijing 100049. Strong decays of heavy-light mesons in a chiral quark model. United States: N. p., 2008. Web. doi:10.1103/PHYSREVD.78.014029.
Xianhui, Zhong, Theoretical Physics Center for Science Facilities, Chinese Academy of Sciences, Beijing 100049, Qiang, Zhao, Department of Physics, University of Surrey, Guildford, GU2 7XH, & Theoretical Physics Center for Science Facilities, Chinese Academy of Sciences, Beijing 100049. Strong decays of heavy-light mesons in a chiral quark model. United States. https://doi.org/10.1103/PHYSREVD.78.014029
Xianhui, Zhong, Theoretical Physics Center for Science Facilities, Chinese Academy of Sciences, Beijing 100049, Qiang, Zhao, Department of Physics, University of Surrey, Guildford, GU2 7XH, and Theoretical Physics Center for Science Facilities, Chinese Academy of Sciences, Beijing 100049. 2008. "Strong decays of heavy-light mesons in a chiral quark model". United States. https://doi.org/10.1103/PHYSREVD.78.014029.
@article{osti_21250235,
title = {Strong decays of heavy-light mesons in a chiral quark model},
author = {Xianhui, Zhong and Theoretical Physics Center for Science Facilities, Chinese Academy of Sciences, Beijing 100049 and Qiang, Zhao and Department of Physics, University of Surrey, Guildford, GU2 7XH and Theoretical Physics Center for Science Facilities, Chinese Academy of Sciences, Beijing 100049},
abstractNote = {We carry out a systematic study of the heavy-light meson strong decays in a chiral quark model. For the S-wave vectors [D*(2007), D*{sup {+-}}(2010)], P-wave scalars [D{sub 0}*(2400), B{sub 0}*(5730)], and tensors [D{sub 2}*(2460), D{sub s2}*(2573)], we obtain results in good agreement with the experimental data. For the axial vectors D{sub 1}(2420) and D{sub 1}{sup '}(2430), a state mixing scheme between 1{sup 1}P{sub 1} and 1{sup 3}P{sub 1} is favored with a mixing angle {phi}{approx_equal}-(55{+-}5) deg., which is consistent with previous theoretical predictions. The same mixing scheme also applies to D{sub s1}(2460) and D{sub s1}(2536) that accounts for the narrow width of the D{sub s1}(2536) and its dominant decay into D*K. For B{sub 1}(5725) and B{sub 1}{sup '}(5732), such a mixing explains well the decay width of the former but leads to an even broader B{sub 1}{sup '}(5732). Predictions for the strange-bottom axial vectors are also made. For the undetermined meson D*(2640), we find that they fit well in the radially excited state 2{sup 3}S{sub 1} according to its decay mode. The newly observed D{sub sJ}*(2860) strongly favors the D-wave excited state 1{sup 3}D{sub 3}. For D{sub sJ}*(2632) and D{sub sJ}*(2690), we find they are difficult to fit in any D{sub s} excitations in that mass region, if the experimental data are accurate. Theoretical predictions for decay modes of those unobserved states as multiplets of 2S and 1D waves are also presented, which should be useful for the further experimental search for those states.},
doi = {10.1103/PHYSREVD.78.014029},
url = {https://www.osti.gov/biblio/21250235}, journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 1,
volume = 78,
place = {United States},
year = {Tue Jul 01 00:00:00 EDT 2008},
month = {Tue Jul 01 00:00:00 EDT 2008}
}