TY - JOUR
T1 - Above-threshold poles in model-independent form factor parametrizations
AU - Grinstein, Benjamín
AU - Lebed, Richard
N1 - Publisher Copyright:
© 2015 American Physical Society.
PY - 2015/12/1
Y1 - 2015/12/1
N2 - The model-independent parametrization for exclusive hadronic form factors commonly used for semileptonic decays is generalized to allow for the inclusion of above-threshold resonant poles of known mass and width. We discuss the interpretation of such poles, particularly with respect to the analytic structure of the relevant two-point Green's function in which they reside. Their presence has a remarkably small effect on the parametrization, as we show explicitly for the case of D→πe+νe.
AB - The model-independent parametrization for exclusive hadronic form factors commonly used for semileptonic decays is generalized to allow for the inclusion of above-threshold resonant poles of known mass and width. We discuss the interpretation of such poles, particularly with respect to the analytic structure of the relevant two-point Green's function in which they reside. Their presence has a remarkably small effect on the parametrization, as we show explicitly for the case of D→πe+νe.
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U2 - 10.1103/PhysRevD.92.116001
DO - 10.1103/PhysRevD.92.116001
M3 - Article
AN - SCOPUS:84950341910
SN - 1550-7998
VL - 92
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 11
M1 - 116001
ER -