A light-cone QCD sum rule approach for the Ξ baryon electromagnetic form factors and the semileptonic decay Ξc → Ξe+νe

被引：16

作者：

Liu, Yong-Lu ^{[1
]}

Huang, Ming-Qiu ^{[1
]}

机构：

[1] Natl Univ Def Technol, Dept Phys, Changsha 410073, Hunan, Peoples R China

来源：

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 2010年 / 37卷 / 11期

关键词：

MAGNETIC-MOMENTS; SU(3); CURRENTS;

D O I：

10.1088/0954-3899/37/11/115010

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The electromagnetic form factors of the Xi baryons and the semileptonic decay process Xi(c) -> Xi e(+)nu(e) are investigated in the frame work of the light-cone QCD sum rule method with Ioffe-type interpolating currents. Our estimates on the magnetic moments are mu(Xi)0 = -(1.75 +/- 0.21)mu(N) and mu(Xi)- = -(1.01 +/- 0.11)mu(N). The decay width of the semileptonic process is expected to be Gamma(Xi(c) -> Xi e(+)nu(e)) = (6.17(-2.48)(+2.24)) x 10(-14) GeV. The results show that the adoption of this type of interpolating current improves the calculations of the magnetic form factors and gives more reliable prediction for the analysis of the semileptonic decay process.

引用

页数：13

共 43 条

[1] FIRST OBSERVATION OF THE DECAY XI(+)(C)-]XI(0)E+NU(E) AND AN ESTIMATE OF THE XI(+)(C)/XI(0)(C) LIFETIME RATIO [J].

ALEXANDER, JP ;

BEBEK, C ;

BERKELMAN, K ;

BLOOM, K ;

BROWDER, TE ;

CASSEL, DG ;

CHO, HA ;

COFFMAN, DM ;

CROWCROFT, DS ;

DRELL, PS ;

DUMAS, D ;

EHRLICH, R ;

GAIDAREV, P ;

GARCIASCIVERES, M ;

GEISER, B ;

GITTELMAN, B ;

GRAY, SW ;

HARTILL, DL ;

HELTSLEY, BK ;

HENDERSON, S ;

JONES, CD ;

JONES, SL ;

KANDASWAMY, J ;

KATAYAMA, N ;

KIM, PC ;

KREINICK, DL ;

LUDWIG, GS ;

MASUI, J ;

MEVISSEN, J ;

MISTRY, NB ;

NG, CR ;

NORDBERG, E ;

PATTERSON, JR ;

PETERSON, D ;

RILEY, D ;

SALMAN, S ;

SAPPER, M ;

WURTHWEIN, F ;

AVERY, P ;

FREYBERGER, A ;

RODRIGUEZ, J ;

YANG, S ;

YELTON, J ;

CINABRO, D ;

LIU, T ;

SAULNIER, H ;

WILSON, R ;

YAMAMOTO, H ;

BERGFELD, T ;

EISENSTEIN, BI .

PHYSICAL REVIEW LETTERS, 1995, 74 (16) :3113-3117

[2] FIRST OBSERVATION OF XI(C)(+)-]XI(0)E(+)NU(E) AND AN ESTIMATE OF THE XI(+)(C)/XI(0)(C) LIFETIME RATIO (VOL 74, PG 3133, 1995) [J].

ALEXANDER, JP ;

BEBEK, C ;

BERKELMAN, K ;

BLOOM, K ;

BROWDER, TE ;

CASSEL, DG ;

CHO, HA ;

COFFMAN, DM ;

CROWCROFT, DS ;

DRELL, PS ;

DUMAS, D ;

EHRLICH, R ;

GAIDAREV, P ;

GARCIASCIVERES, M ;

GEISER, B ;

GITTELMAN, B ;

GRAY, SW ;

HARTILL, DL ;

HELTSLEY, BK ;

HENDERSON, S ;

JONES, CD ;

JONES, SL ;

KANDASWAMY, J ;

KATAYAMA, N ;

KIM, PC ;

KREINICK, DL ;

LUDWIG, GS ;

MASUI, J ;

MEVISSEN, J ;

MISTRY, NB ;

NG, CR ;

NORDBERG, E ;

PATTERSON, JR ;

PETERSON, D ;

RILEY, D ;

SALMAN, S ;

SAPPER, M ;

WURTHWEIN, F ;

AVERY, P ;

FREYBERGER, A ;

RODRIGUEZ, J ;

YANG, S ;

YELTON, J ;

CINABRO, D ;

LIU, T ;

SAULNIER, M ;

WILSON, R ;

YAMAMOTO, H ;

BERGFELD, T ;

EISENSTEIN, BI .

PHYSICAL REVIEW LETTERS, 1995, 75 (22) :4155-4155

[3] Analysis of the Λb → Λl+l- decay in QCD [J].

Aliev, T. M. ;

Azizi, K. ;

Savci, M. .

PHYSICAL REVIEW D, 2010, 81 (05)

[4] Nucleon electromagnetic form factors in QCD [J].

Aliev, T. M. ;

Azizi, K. ;

Ozpineci, A. ;

Savci, M. .

PHYSICAL REVIEW D, 2008, 77 (11)

[5] Octet baryon magnetic moments in light cone QCD sum rules [J].

Aliev, TM ;

Ozpineci, A ;

Savci, M .

PHYSICAL REVIEW D, 2002, 66 (01) :160021-1600210

[6] Review of particle physics [J].

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. .

PHYSICS LETTERS B, 2008, 667 (1-5) :1-+

[7] Tree level semileptonic Σb to nucleon decay in light cone QCD sum rules [J].

Azizi, K. ;

Bayar, M. ;

Ozpineci, A. ;

Sarac, Y. .

PHYSICAL REVIEW D, 2009, 80 (03)

[8] Nucleon form factors in QCD [J].

Braun, V. M. ;

Lenz, A. ;

Wittmann, M. .

PHYSICAL REVIEW D, 2006, 73 (09)

[9] Light-cone sum rules for the nucleon form factors [J].

Braun, VM ;

Lenz, A ;

Mahnke, N ;

Stein, E .

PHYSICAL REVIEW D, 2002, 65 (07) :740111-7401114

[10] 1/M corrections to baryonic form factors in the quark model [J].

Cheng, HY ;

Tseng, B .

PHYSICAL REVIEW D, 1996, 53 (03) :1457-1469

← 1 2 3 4 5 →