Finite size effects of a pion matrix element

被引：17
作者：
Guagnelli, M
Jansen, K
Palombi, F
Petronzio, R
Shindler, A
Wetzorke, I
机构：
[1] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy
[2] Ist Nazl Fis Nucl, Sez Roma 2, I-00133 Rome, Italy
[3] DESY, NIC, D-15738 Zeuthen, Germany
[4] E Fermi Res Ctr, Compendio Viminale, I-00184 Rome, Italy
来源：
PHYSICS LETTERS B | 2004年 / 597卷 / 02期
关键词：
D O I：
10.1016/j.physletb.2004.07.020
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We investigate finite size effects of the pion matrix element of the non-singlet, twist-2 operator corresponding to the average momentum of non-singlet quark densities. Using the quenched approximation, they come out to be surprisingly large when compared to the finite size effects of the pion mass. As a consequence, simulations of corresponding nucleon matrix elements could be affected by finite size effects even stronger which could lead to serious systematic uncertainties in their evaluation. (C) 2004 Elsevier B.V. All rights reserved.
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页码：216 / 221
页数：6
相关论文
共 22 条
[1]  
[Anonymous], NUCL PHYS B
[2]   FINITE-SIZE EFFECTS OF HADRON MASSES IN LATTICE QCD - A COMPARATIVE-STUDY FOR QUENCHED AND FULL QCD SIMULATIONS [J].
AOKI, S ;
UMEMURA, T ;
FUKUGITA, M ;
ISHIZUKA, N ;
MINO, H ;
OKAWA, M ;
UKAWA, A .
PHYSICAL REVIEW D, 1994, 50 (01) :486-494
[3]   Impact of the finite volume effects on the chiral behavior of fK and BK -: art. no. 054010 [J].
Becirevic, D ;
Villadoro, G .
PHYSICAL REVIEW D, 2004, 69 (05)
[4]   The pion mass in finite volume [J].
Colangelo, G ;
Dürr, S .
EUROPEAN PHYSICAL JOURNAL C, 2004, 33 (04) :543-553
[5]   Chiral extrapolation of lattice moments of proton quark distributions [J].
Detmold, W ;
Melnitchouk, W ;
Negele, JW ;
Renner, DB ;
Thomas, AW .
PHYSICAL REVIEW LETTERS, 2001, 87 (17) :172001-1
[6]  
DOLGOV D, 2000, PHYS REV D, V66, P4506
[7]   FINITE-SIZE EFFECT FOR HADRON MASSES IN LATTICE QCD [J].
FUKUGITA, M ;
MINO, H ;
OKAWA, M ;
PARISI, G ;
UKAWA, A .
PHYSICS LETTERS B, 1992, 294 (3-4) :380-384
[8]   Precision computation of the strange quark's mass in quenched QCD [J].
Garden, J ;
Heitger, J ;
Sommer, R ;
Wittig, H .
NUCLEAR PHYSICS B, 2000, 571 (1-2) :237-256
[9]   LIGHT QUARKS AT LOW-TEMPERATURES [J].
GASSER, J ;
LEUTWYLER, H .
PHYSICS LETTERS B, 1987, 184 (01) :83-88
[10]   Structure functions near the chiral limit [J].
Göckeler, M ;
Horsley, R ;
Pleiter, D ;
Rakow, PEL ;
Schierholz, G .
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS, 2003, 119 :398-400
123