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Title: Polarization states in B{yields}{rho}K* and new physics

Abstract

The standard model explanations of the anomalously-large transverse polarization fraction f{sub T} in B{yields}{phi}K* can be tested by measuring the polarizations of the two decays B{sup +}{yields}{rho}{sup +}K*{sup 0} and B{sup +}{yields}{rho}{sup 0}K*{sup +}. For the scenario in which the transverse polarizations of both B{yields}{rho}K* decays are predicted to be large, we derive a simple relation between the f{sub T}'s of these decays. If this relation is not confirmed experimentally, this would yield an unambiguous signal for new physics. The new-physics operators which can account for the discrepancy in B{yields}{pi}K decays will also contribute to the polarization states of B{yields}{rho}K*. We compute these contributions and show that there are only two operators which can simultaneously account for the present B{yields}{pi}K and B{yields}{rho}K* data. If the new physics obeys an approximate U-spin symmetry, the B{yields}{phi}K* measurements can also be explained.

Authors:
; ;  [1];  [2];  [3]
  1. Physique des Particules, Universite de Montreal, C.P. 6128, succ. centre-ville, Montreal, QC, H3C 3J7 (Canada)
  2. Department of Physics, University of Toronto, 60 St. George Street, Toronto, ON, M5S 1A7 (Canada)
  3. Physics Department, McGill University, 3600 University St., Montreal, Quebec, H3A 2T8 (Canada)
Publication Date:
OSTI Identifier:
20713822
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 72; Journal Issue: 9; Other Information: DOI: 10.1103/PhysRevD.72.094008; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; K*-892 MESONS; PARTICLE DECAY; PHI-1020 MESONS; PIONS; POLARIZATION; RHO-770 MESONS; SPIN; STANDARD MODEL; SYMMETRY

Citation Formats

Baek, Seungwon, Hamel, Philippe, London, David, Datta, Alakabha, and Hernandez, Oscar F. Polarization states in B{yields}{rho}K* and new physics. United States: N. p., 2005. Web. doi:10.1103/PhysRevD.72.094008.
Baek, Seungwon, Hamel, Philippe, London, David, Datta, Alakabha, & Hernandez, Oscar F. Polarization states in B{yields}{rho}K* and new physics. United States. doi:10.1103/PhysRevD.72.094008.
Baek, Seungwon, Hamel, Philippe, London, David, Datta, Alakabha, and Hernandez, Oscar F. Tue . "Polarization states in B{yields}{rho}K* and new physics". United States. doi:10.1103/PhysRevD.72.094008.
@article{osti_20713822,
title = {Polarization states in B{yields}{rho}K* and new physics},
author = {Baek, Seungwon and Hamel, Philippe and London, David and Datta, Alakabha and Hernandez, Oscar F.},
abstractNote = {The standard model explanations of the anomalously-large transverse polarization fraction f{sub T} in B{yields}{phi}K* can be tested by measuring the polarizations of the two decays B{sup +}{yields}{rho}{sup +}K*{sup 0} and B{sup +}{yields}{rho}{sup 0}K*{sup +}. For the scenario in which the transverse polarizations of both B{yields}{rho}K* decays are predicted to be large, we derive a simple relation between the f{sub T}'s of these decays. If this relation is not confirmed experimentally, this would yield an unambiguous signal for new physics. The new-physics operators which can account for the discrepancy in B{yields}{pi}K decays will also contribute to the polarization states of B{yields}{rho}K*. We compute these contributions and show that there are only two operators which can simultaneously account for the present B{yields}{pi}K and B{yields}{rho}K* data. If the new physics obeys an approximate U-spin symmetry, the B{yields}{phi}K* measurements can also be explained.},
doi = {10.1103/PhysRevD.72.094008},
journal = {Physical Review. D, Particles Fields},
number = 9,
volume = 72,
place = {United States},
year = {Tue Nov 01 00:00:00 EST 2005},
month = {Tue Nov 01 00:00:00 EST 2005}
}