Journal article 971 views
Mesons in large-N QCD
Gunnar Bali,
Francis Bursa,
Luca Castagnini,
Sara Collins,
Luigi Debbio,
Biagio Lucini
,
Marco Panero
Journal of High Energy Physics, Volume: 2013, Issue: 6
Swansea University Author:
Biagio Lucini
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DOI (Published version): 10.1007/JHEP06(2013)071
Abstract
We present the results of a systematic, first-principles study of the spectrum and decay constants of mesons for different numbers of color charges N, via lattice computations. We restrict our attention to states in the non-zero isospin sector, evaluating the masses associated with the ground-state...
Published in: | Journal of High Energy Physics |
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ISSN: | 1029-8479 |
Published: |
2013
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Online Access: |
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URI: | https://cronfa.swan.ac.uk/Record/cronfa15285 |
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Abstract: |
We present the results of a systematic, first-principles study of the spectrum and decay constants of mesons for different numbers of color charges N, via lattice computations. We restrict our attention to states in the non-zero isospin sector, evaluating the masses associated with the ground-state and first excitation in the pseudoscalar, vector, scalar, and axial vector channels. Our results are based on a new set of simulations of four dimensional SU(N) Yang-Mills theories with the number of colors ranging from N = 2 to N =17;the spectra and the decay constants are computed in the quenched approximation (which becomes exact in the ’t Hooft limit) using Wilson fermions. After discussing the extrapolations to the chiral and large-N limits, we present a comparison of our results to some of the numerical computations and analytical predictions available in the literature — including, in particular, those from holographic computations. |
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Keywords: |
Lattice QCD, AdS-CFT Correspondence, 1/N Expansion |
College: |
Faculty of Science and Engineering |
Issue: |
6 |