Form factors and equal-time commutators

T. C. Yang

doi:10.1007/bf02729553

Form factors and equal-time commutators

Il Nuovo Cimento A ◽

10.1007/bf02729553 ◽

1972 ◽

Vol 12 (2) ◽

pp. 387-408 ◽

Cited By ~ 2

Author(s):

T. C. Yang

Keyword(s):

Form Factors ◽

Equal Time

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Equal-Time Commutators and Form Factors in Quantum Electrodynamics with Internal Symmetry

Physical Review ◽

10.1103/physrev.184.1577 ◽

1969 ◽

Vol 184 (5) ◽

pp. 1577-1593 ◽

Cited By ~ 4

Author(s):

J. Katz ◽

J. Langerholc

Keyword(s):

Quantum Electrodynamics ◽

Form Factors ◽

Internal Symmetry ◽

Equal Time

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FORM FACTORS FOR B→πlν DECAY IN A MODEL CONSTRAINED BY CHIRAL SYMMETRY AND QUARK MODEL

International Journal of Modern Physics A ◽

10.1142/s0217751x02012326 ◽

2002 ◽

Vol 17 (32) ◽

pp. 4927-4938 ◽

Cited By ~ 6

Author(s):

RIAZUDDIN ◽

T. A. AL-AITHAN ◽

AMJAD HUSSAIN SHAH GILANI

Keyword(s):

Vector Meson ◽

Quark Model ◽

Chiral Symmetry ◽

B Meson ◽

Valence Quark ◽

Form Factors ◽

Pole Mass ◽

Equal Time ◽

Quark Contribution ◽

Momentum Transfer Range

The form factors for the B→π transition are evaluated in the entire momentum transfer range by using the constraints obtained in the framework combining the heavy quark expansion and chiral symmetry for light quarks and the quark model. In particular, we calculate the valence quark contribution and show that it together with the equal time commutator contribution give to the form factors a pole behavior with the heavy (B-meson in our case) mass as the pole mass. This is in addition to the usual vector meson B*-pole diagram for B→πlν in the above framework. We discuss the predictions in our model, which provide an estimate of |Vub|2.

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