The B → K* form factors on the lattice

被引：27

作者：

Agadjanov, Andria ^{[1
,2
]}

Bernard, Veronique ^{[3
]}

Meissner, Ulf-G. ^{[1
,2
,4
,5
]}

Rusetsky, Akaki ^{[1
,2
]}

机构：

[1] Univ Bonn, Helmholtz Inst Strahlen & Kernphys Theorie, D-53115 Bonn, Germany

[2] Univ Bonn, Bethe Ctr Theoret Phys, D-53115 Bonn, Germany

[3] Univ Paris Saclay, Univ Paris 11, Inst Phys Nucl, UMR 8608,CNRS, F-91406 Orsay, France

[4] Forschungszentrum Julich, Inst Adv Simulat IAS 4, Inst Kernphys IKP 3, D-52425 Julich, Germany

[5] Forschungszentrum Julich, Julich Ctr Hadron Phys, D-52425 Julich, Germany

来源：

NUCLEAR PHYSICS B | 2016年 / 910卷

关键词：

PHASE-SHIFT ANALYSIS; SCATTERING; DECAYS; STATES; MATRIX; PROTON; CUSPS;

D O I：

10.1016/j.nuclphysb.2016.07.005

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

The extraction of the B -> K* transition form factors from lattice data is studied, applying non relativistic effective field theory in a finite volume. The possible mixing of pi K and eta K states is taken into account. The two-channel analogue of the Lellouch-Luscher formula is reproduced. Due to the resonance nature of the K*, an equation is derived, which allows to determine the form factors at the pole position in a process-independent manner. The infinitely-narrow width approximation of the results is discussed. (C) 2016 The Authors. Published by Elsevier B.V.

引用

页码：387 / 409

页数：23

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