Light-cone QCD sum rules for the Λ baryon electromagnetic form factors and its magnetic moment

被引：12
作者：
Liu, Yong-Lu [1 ]
Huang, Ming-Qiu [1 ]
Wang, Dao-Wei [1 ]
机构：
[1] Natl Univ Def Technol, Dept Phys, Changsha 410073, Hunan, Peoples R China
来源：
EUROPEAN PHYSICAL JOURNAL C | 2009年 / 60卷 / 04期
基金：
中国国家自然科学基金;
关键词：
CHARGED-PION ELECTROPRODUCTION; DECAY SIGMA+->P-GAMMA; RESONANCE PHYSICS; 8.83 (GEV/C)(2); OCTET BARYONS; NUCLEON; PROTON; Q(2)=1.75; NEUTRON; MESON;
D O I：
10.1140/epjc/s10052-009-0971-9
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 present the light-cone QCD sum rules up to twist 6 for the electromagnetic form factors of the Lambda baryon. To estimate the magnetic moment of the baryon, the magnetic form factor is fitted by the dipole formula. The numerical value of our estimation is mu(Lambda) =-(0.64 +/- 0.04) mu(N), which is in accordance with the experimental data and the existing theoretical results. We find that it is twist 4 but not the leading twist distribution amplitudes that dominate the results.
引用
收藏
页码：593 / 601
页数：9
相关论文
共 68 条
  • [1] Octet baryon magnetic moments in light cone QCD sum rules (vol 66, art no 016002, 2002) -: art. no. 039901
    Aliev, TM
    Özpineci, A
    Savci, M
    [J]. PHYSICAL REVIEW D, 2003, 67 (03):
  • [2] Octet baryon magnetic moments in light cone QCD sum rules
    Aliev, TM
    Ozpineci, A
    Savci, M
    [J]. PHYSICAL REVIEW D, 2002, 66 (01) : 160021 - 1600210
  • [3] Aliev TM, 2002, PHYS REV D, V65, DOI 10.1103/PhysRevD.65.056008
  • [4] Magnetic moment of the ρ meson in QCD light cone sum rules -: art. no. 056002
    Aliev, TM
    Kanik, I
    Savci, M
    [J]. PHYSICAL REVIEW D, 2003, 68 (05)
  • [5] Aliev TM, 2002, PHYS REV D, V65, DOI 10.1103/PhysRevD.65.096004
  • [6] Magnetic moments of decuplet baryons in light cone QCD -: art. no. 053012
    Aliev, TM
    Özpineci, A
    Savci, M
    [J]. PHYSICAL REVIEW D, 2000, 62 (05): : 1 - 8
  • [7] ALIEV TM, ARXIV08034420
  • [8] Review of particle physics
    Amsler, C.
    Doser, M.
    Antonelli, M.
    Asner, D. M.
    Babu, K. S.
    Baer, H.
    Band, H. R.
    Barnett, R. M.
    Bergren, E.
    Beringer, J.
    Bernardi, G.
    Bertl, W.
    Bichsel, H.
    Biebel, O.
    Bloch, P.
    Blucher, E.
    Blusk, S.
    Cahn, R. N.
    Carena, M.
    Caso, C.
    Cecccci, A.
    Chakraborty, D.
    Chen, M. -C.
    Chivukula, R. S.
    Cowan, G.
    Dahl, O.
    D'Ambrosio, G.
    Damour, T.
    de Gouvea, A.
    DeGrand, T.
    Dobrescu, B.
    Drees, M.
    Edwards, D. A.
    Eidelman, S.
    Elvira, V. D.
    Erler, J.
    Ezhela, V. V.
    Feng, J. L.
    Fetscher, W.
    Fields, B. D.
    Foster, B.
    Gaisser, T. K.
    Garren, L.
    Gerber, H. -J.
    Gerbier, G.
    Gherghetta, T.
    Giudice, G. F.
    Goodman, M.
    Grab, C.
    Gritsan, A. V.
    [J]. PHYSICS LETTERS B, 2008, 667 (1-5) : 1 - +
  • [9] MEASUREMENTS OF THE ELECTRIC AND MAGNETIC FORM-FACTORS OF THE PROTON FROM Q(2)=1.75 TO 8.83 (GEV/C)(2)
    ANDIVAHIS, L
    BOSTED, PE
    LUNG, A
    STUART, LM
    ALSTER, J
    ARNOLD, RG
    CHANG, CC
    DIETRICH, FS
    DODGE, W
    GEARHART, R
    GOMEZ, J
    GRIFFIOEN, KA
    HICKS, RS
    HYDEWRIGHT, CE
    KEPPEL, C
    KUHN, SE
    LICHTENSTADT, J
    MISKIMEN, RA
    PETERSON, GA
    PETRATOS, GG
    ROCK, SE
    ROKNI, S
    SAKUMOTO, WK
    SPENGOS, M
    SWARTZ, K
    SZALATA, Z
    TAO, LH
    [J]. PHYSICAL REVIEW D, 1994, 50 (09) : 5491 - 5517
  • [10] Precise measurements of the neutron magnetic form factor
    Anklin, H
    deBever, LJ
    Blomqvist, KI
    Boeglin, WU
    Bohm, R
    Distler, M
    Edelhoff, R
    Friedrich, J
    Fritschi, D
    Geiges, R
    Gotz, J
    Honegger, A
    Jennewein, P
    Jourdan, J
    Kahrau, M
    Korn, M
    Kramer, H
    Krygier, KW
    Kubon, G
    Kunde, V
    Liesenfeld, A
    Masson, G
    Merle, K
    Neuhausen, R
    Offermann, EAJM
    Petitjean, T
    Pospischil, T
    Potokar, M
    Qin, LM
    Richter, AW
    Rokavec, A
    Rosner, G
    Sauer, P
    Schardt, S
    Sick, I
    Sirca, S
    Trueb, P
    Tuccillo, M
    Vodenik, B
    Wagner, A
    Walcher, T
    Warren, G
    Wolf, S
    Zhao, J
    Zeier, M
    Zihlmann, B
    [J]. PHYSICS LETTERS B, 1998, 428 (3-4) : 248 - 253
1234567