Ishiwata, Koji and Wise, Mark B. (2011) Fourth generation bound states. Physical Review D, 83 (7). 074015. ISSN 2470-0010. doi:10.1103/PhysRevD.83.074015. https://resolver.caltech.edu/CaltechAUTHORS:20110502-112029805
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Abstract
We investigate the spectrum and wave functions of q̅ ′q′ bound states for heavy fourth generation quarks (q′) that have a very small mixing with the three observed generations of standard model quarks. Such bound states come with different color, spin and flavor quantum numbers. Since the fourth generation Yukawa coupling, λ_q′, is large we include all perturbative corrections to the potential between the heavy quark and antiquark of order λ_(q′)^(2)N_c/16π^2 where N_c is the number of colors, as well as relativistic corrections suppressed by (v/c)^2. We find that the lightest fourth generation quark masses for which a bound state exists for color octet states. For the color singlet states, which always have a bound state, we analyze the influence that the Higgs couplings have on the size and binding energy of the bound states.
Item Type: | Article | |||||||||
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Additional Information: | © 2011 American Physical Society. Received 9 March 2011; published 14 April 2011. The work was supported in part by the U.S. Department of Energy under Contract No. DE-FG02-92ER40701, and by the Gordon and Betty Moore Foundation. We are grateful to B. Grinstein for useful discussions. | |||||||||
Group: | Caltech Theory, Moore Center for Theoretical Cosmology and Physics | |||||||||
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Issue or Number: | 7 | |||||||||
Classification Code: | PACS: 14.65.Jk, 12.60.-i | |||||||||
DOI: | 10.1103/PhysRevD.83.074015 | |||||||||
Record Number: | CaltechAUTHORS:20110502-112029805 | |||||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20110502-112029805 | |||||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
ID Code: | 23520 | |||||||||
Collection: | CaltechAUTHORS | |||||||||
Deposited By: | INVALID USER | |||||||||
Deposited On: | 03 May 2011 14:38 | |||||||||
Last Modified: | 09 Nov 2021 16:15 |
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