Partial twisting for scalar mesons

被引：16

作者：

Agadjanov, Dimitri ^{[1
,2
,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] St Andrew First Called Georgian Univ Patriarchate, GE-0162 Tbilisi, Georgia

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

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

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2014年 / 01期

基金：

美国国家科学基金会;

关键词：

Lattice QCD; Chiral Lagrangians; MULTIQUARK HADRONS; UNIFIED THEORY; FINITE-VOLUME; PHASE-SHIFTS; RESONANCE; F(0)(980); DECAYS; STATES;

D O I：

10.1007/JHEP01(2014)103

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 possibility of imposing partially twisted boundary conditions is investigated for the scalar sector of lattice QCD. According to the commonly shared belief, the presence of quark-antiquark annihilation diagrams in the intermediate state generally hinders the use of the partial twisting. Using effective field theory techniques in a finite volume, and studying the scalar sector of QCD with total isospin I = 1, we however demonstrate that partial twisting can still be performed, despite the fact that annihilation diagrams are present. The reason for this are delicate cancellations, which emerge due to the graded symmetry in partially quenched QCD with valence, sea and ghost quarks. The modified Luscher equation in case of partial twisting is given.

引用

页数：37

共 53 条

[1] New analysis of the KLOE data on the φ→ηπ0γ decay -: art. no. 014006 [J].

Achasov, NN ;

Kiselev, AV .

PHYSICAL REVIEW D, 2003, 68 (01)

[2] Lattice investigation of the scalar mesons a0(980) and κ using four-quark operators [J].

Alexandrou, Constantia ;

Daldrop, Jan Oliver ;

Dalla Brida, Mattia ;

Gravina, Mario ;

Scorzato, Luigi ;

Urbach, Carsten ;

Wagner, Marc .

JOURNAL OF HIGH ENERGY PHYSICS, 2013, (04)

[3] Flatte-like distributions and the a0(980)/f0(980) mesons [J].

Baru, V ;

Haidenbauer, J ;

Hanhart, C ;

Kudryavtsev, A ;

Meissner, UG .

EUROPEAN PHYSICAL JOURNAL A, 2005, 23 (03) :523-533

[4] Evidence that the a0(980) and f0(980) are not elementary particles [J].

Baru, V ;

Haidenbauer, J ;

Hanhart, C ;

Kalashnikova, Y ;

Kudryavtsev, A .

PHYSICS LETTERS B, 2004, 586 (1-2) :53-61

[5] A framework for exploring the interactions and decays of hyperons with lattice QCD [J].

Beane, SR ;

Bedaque, PF ;

Parreño, A ;

Savage, MJ .

NUCLEAR PHYSICS A, 2005, 747 (01) :55-74

[6] Twisted valence quarks and hadron interactions on the lattice [J].

Bedaque, PE ;

Chen, JW .

PHYSICS LETTERS B, 2005, 616 (3-4) :208-214

[7] Aharonov-Bohm effect and nucleon-nucleon phase shifts on the lattice [J].

Bedaque, PE .

PHYSICS LETTERS B, 2004, 593 :82-88

[8] On the foundations of partially quenched chiral perturbation theory [J].

Bernard, Claude ;

Golterman, Maarten .

PHYSICAL REVIEW D, 2013, 88 (01)

[9]

BERNARD V, 2008, JHEP, V8

[10]

BERNARD V, 2011, JHEP, V1

← 1 2 3 4 5 6 →