Hadron structure from lattice QCD

被引：7

作者：

Alexandrou, C. ^{[1
,2
]}

Jansen, K. ^{[3
]}

机构：

[1] Univ Cyprus, Dept Phys, CY-1678 Nicosia, Cyprus

[2] Cyprus Inst, Computat Based Sci & Technol Res Ctr, CY-2121 Nicosia, Cyprus

[3] DESY, John von Neumann Inst Comp, D-15738 Zeuthen, Germany

来源：

NUCLEAR AND PARTICLE PHYSICS PROCEEDINGS | 2015年 / 261卷

关键词：

Lattice QCD; hadron spectrum; moments of parton distribution functions; dis-connected quark loops; nucleon form factors; TWISTED MASS FERMIONS; NONPERTURBATIVE RENORMALIZATION; PARTON DISTRIBUTIONS; DARK-MATTER; NUCLEON; QUARK; REPRESENTATIONS; SIMULATION; SYMMETRY; MOMENTUM;

D O I：

10.1016/j.nuclphysbps.2015.03.015

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：

We review results for hadron masses and hadron structure using maximally twisted mass fermions for our non-perturbative studies of lattice QCD. We demonstrate that hadron masses can be computed reliably in this setup and that a nice agreement with the experimentally determined spectra is found. In addition, we give examples that lattice QCD can also provide predictions of masses for a number of yet not discovered states. We present a number of results for moments of parton distribution functions and form factors and show that simulations at the physical value of the pion mass have the promising potential to reconcile older discrepancies between lattice results and those from experiment or phenomenology. In addition, we show that it is also possible to include dis-connected quark loop contributions in the analysis when a large enough statistics is invested. Finally, we give an outlook for future lattice calculations of hadron structure by discussing the gluon moment, first results of a direct computation of the parton distribution functions and mention the neutron electric dipole moment.

引用

页码：202 / 217

页数：16

共 123 条

[11] Nucleon form factors and moments of generalized parton distributions using Nf=2+1+1 twisted mass fermions [J].

Alexandrou, C. ;

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Koutsou, G. .

PHYSICAL REVIEW D, 2013, 88 (01)

[12] Evaluation of fermion loops applied to the calculation of the η′ mass and the nucleon scalar and electromagnetic form factors [J].

Alexandrou, C. ;

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COMPUTER PHYSICS COMMUNICATIONS, 2012, 183 (06) :1215-1224

[13] Moments of nucleon generalized parton distributions from lattice QCD [J].

Alexandrou, C. ;

Carbonell, J. ;

Constantinou, M. ;

Harraud, P. A. ;

Guichon, P. ;

Jansen, K. ;

Kallidonis, C. ;

Korzec, T. ;

Papinutto, M. .

PHYSICAL REVIEW D, 2011, 83 (11)

[14] Nucleon electromagnetic form factors in twisted mass lattice QCD [J].

Alexandrou, C. ;

Brinet, M. ;

Carbonell, J. ;

Constantinou, M. ;

Harraud, P. A. ;

Guichon, P. ;

Jansen, K. ;

Korzec, T. ;

Papinutto, M. .

PHYSICAL REVIEW D, 2011, 83 (09)

[15] Axial nucleon form factors from lattice QCD [J].

Alexandrou, C. ;

Brinet, M. ;

Carbonell, J. ;

Constantinou, M. ;

Harraud, P. A. ;

Guichon, P. ;

Jansen, K. ;

Korzec, T. ;

Papinutto, M. .

PHYSICAL REVIEW D, 2011, 83 (04)

[16] Renormalization constants for 2-twist operators in twisted mass QCD [J].

Alexandrou, C. ;

Constantinou, M. ;

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Panagopoulos, H. ;

Stylianou, F. .

PHYSICAL REVIEW D, 2011, 83 (01)

[17] Low-lying baryon spectrum with two dynamical twisted mass fermions [J].

Alexandrou, C. ;

Baron, R. ;

Carbonell, J. ;

Drach, V. ;

Guichon, P. ;

Jansen, K. ;

Korzec, T. ;

Pene, O. .

PHYSICAL REVIEW D, 2009, 80 (11)

[18] Light baryon masses with dynamical twisted mass fermions [J].

Alexandrou, C. ;

Baron, R. ;

Blossier, B. ;

Brinet, M. ;

Carbonell, J. ;

Dimopoulos, P. ;

Drach, V. ;

Farchioni, F. ;

Frezzotti, R. ;

Guichon, P. ;

Herdoiza, G. ;

Jansen, K. ;

Korzec, T. ;

Koutsou, G. ;

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Pene, O. ;

Shindler, A. ;

Urbach, C. ;

Wenger, U. .

PHYSICAL REVIEW D, 2008, 78 (01)

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