B-factory signals for a warped extra dimension

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We study predictions for B-physics in a class of models, recently introduced, with a non-supersymmetric warped extra dimension. In these models few ({approx} 3) TeV Kaluza-Klein masses are consistent with electroweak data due to bulk custodial symmetry. Furthermore, there is an analog of GIM mechanism which is violated by the heavy top quark (just as in SM) leading to striking signals at B-factories: (1) New Physics (NP) contributions to {Delta}F = 2 transitions are comparable to SM. This implies that, within this NP framework, the success of the SM unitarity triangle fit is a ''coincidence''. Thus, clean extractions of unitarity ... continued below

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Agashe, Kaustubh; Perez, Gilad & Soni, Amarjit August 24, 2004.

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We study predictions for B-physics in a class of models, recently introduced, with a non-supersymmetric warped extra dimension. In these models few ({approx} 3) TeV Kaluza-Klein masses are consistent with electroweak data due to bulk custodial symmetry. Furthermore, there is an analog of GIM mechanism which is violated by the heavy top quark (just as in SM) leading to striking signals at B-factories: (1) New Physics (NP) contributions to {Delta}F = 2 transitions are comparable to SM. This implies that, within this NP framework, the success of the SM unitarity triangle fit is a ''coincidence''. Thus, clean extractions of unitarity angles via e.g. B {yields} {pi}{pi}, {rho}{pi}, {rho}{rho}, DK are likely to be affected, in addition to O(1) deviation from SM prediction in Bs mixing. (2) O(1) deviation from SM predictions for B {yields} X{sub s}{ell}{sup +}{ell}{sup -} in rate as well as in forward-backward and direct CP asymmetry. (3) Large mixing-induced CP asymmetry in radiative B decays, wherein the SM unambiguously predicts very small asymmetries. Also, with KK masses 3 TeV or less, and with anarchic Yukawa masses, contributions to electric dipole moments of the neutron are roughly 20 times larger than the current experimental bound so that this framework has a ''CP problem''.

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  • Journal Name: Physical Review Letters; Journal Volume: 93; Related Information: Journal Publication Date: 2004

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  • Report No.: LBNL--55324
  • Grant Number: DE-AC02-05CH11231
  • DOI: 10.1103/PhysRevLett.93.201804 | External Link
  • Office of Scientific & Technical Information Report Number: 861503
  • Archival Resource Key: ark:/67531/metadc793293

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  • August 24, 2004

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  • Dec. 19, 2015, 7:14 p.m.

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  • April 1, 2016, 7:16 p.m.

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Agashe, Kaustubh; Perez, Gilad & Soni, Amarjit. B-factory signals for a warped extra dimension, article, August 24, 2004; Berkeley, California. (https://digital.library.unt.edu/ark:/67531/metadc793293/: accessed May 25, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.