Strangeness-changing scalar form factors

被引：149

作者：

Jamin, M

Oller, JA

Pich, A

机构：

[1] Heidelberg Univ, Inst Theoret Phys, D-69120 Heidelberg, Germany

[2] Forschungszentrum Julich, Inst Kernphys Theorie, D-52425 Julich, Germany

[3] Univ Valencia, CSIC, Dept Fis Teor, IFIC, E-46071 Valencia, Spain

来源：

NUCLEAR PHYSICS B | 2002年 / 622卷 / 1-2期

关键词：

scalar form factors; chiral Lagrangians; meson-meson interactions; coupled channels; final state interactions;

D O I：

10.1016/S0550-3213(01)00605-8

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 derive expressions for strangeness-changing scalar form factors, which incorporate known theoretical constraints both at low and high energies. Their leading behaviour in the limit of a large number of colours is calculated from the resonance chiral Lagrangian, and a set of short-distance constraints on the scalar resonance couplings is obtained, imposing the form factors to vanish at infinite momentum transfer. The important effects of meson rescattering are taken into account by exploiting unitarity and analyticity. Making use of previous results on S-wave Kpi scattering [1], and a coupled-channel dispersion-relation analysis, the Kpi, Keta and Keta' scalar form factors are calculated up to 2 GeV These scalar form factors are a key ingredient in the determination of the corresponding scalar spectral function which is important in the extraction of the mass of the strange quark from QCD sum rules as well as hadronic tau decays. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：279 / 308

页数：30

共 60 条

[1] QCD isospin breaking in meson masses, decay constants and quark mass ratios [J].

Amoros, G ;

Bijnens, J ;

Talavera, P .

NUCLEAR PHYSICS B, 2001, 602 (1-2) :87-108

[2]

[Anonymous], 1992, SMR

[3]

[Anonymous], 1980, Gos. Izd-vo Fiz.-Mat. Literatury

[4] A STUDY OF K-PI+ SCATTERING IN THE REACTION K-P-]K-PI+N AT 11 GEV/C [J].

ASTON, D ;

AWAJI, N ;

BIENZ, T ;

BIRD, F ;

DAMORE, J ;

DUNWOODIE, W ;

ENDORF, R ;

FUJII, K ;

HAYASHII, H ;

IWATA, S ;

JOHNSON, WB ;

KAJIKAWA, R ;

KUNZ, P ;

LEITH, DWGS ;

LEVINSON, L ;

MATSUI, T ;

MEADOWS, BT ;

MIYAMOTO, A ;

NUSSBAUM, M ;

OZAKI, H ;

PAK, CO ;

RATCLIFF, BN ;

SCHULTZ, D ;

SHAPIRO, S ;

SHIMOMURA, T ;

SINERVO, PK ;

SUGIYAMA, A ;

SUZUKI, S ;

TARNOPOLSKY, G ;

TAUCHI, T ;

TOGE, N ;

UKAI, K ;

WAITE, A ;

WILLIAMS, S .

NUCLEAR PHYSICS B, 1988, 296 (03) :493-526

[5] UNITARITY AND INELASTIC FINAL-STATE INTERACTIONS [J].

BABELON, O ;

BASDEVANT, JL ;

CAILLERIE, D ;

MENNESSIER, G .

NUCLEAR PHYSICS B, 1976, 113 (03) :445-476

[6] Study of τ decays involving kaons, spectral functions and determination of the strange quark mass [J].

Barate, R ;

Decamp, D ;

Ghez, P ;

Goy, C ;

Lees, JP ;

Merle, E ;

Minard, MN ;

Pietrzyk, B ;

Alemany, R ;

Casado, MP ;

Chmeissani, M ;

Crespo, JM ;

Fernandez, E ;

Fernandez-Bosman, H ;

Garrido, L ;

Graugès, E ;

Juste, A ;

Martinez, M ;

Merino, G ;

Miquel, R ;

Mir, L ;

Pacheco, A ;

Park, IC ;

Riu, I ;

Colaleo, A ;

Creanza, D ;

de Palma, M ;

Gelao, G ;

Iaselli, G ;

Maggi, G ;

Maggi, M ;

Nuzzo, S ;

Ranieri, A ;

Raso, G ;

Ruggieri, F ;

Selvaggi, G ;

Silvestris, L ;

Tempesta, P ;

Tricomi, A ;

Zito, G ;

Huang, X ;

Lin, J ;

Ouyang, Q ;

Wang, T ;

Xie, Y ;

Xu, R ;

Xue, S ;

Zhang, J ;

Zhang, L ;

Zhao, W .

EUROPEAN PHYSICAL JOURNAL C, 1999, 11 (04) :599-618

[7] Extraction of light quark masses from sum rule analyses of axial vector and vector current Ward identities [J].

Bhattacharya, T ;

Gupta, R ;

Maltman, K .

PHYSICAL REVIEW D, 1998, 57 (09) :5455-5467

[8]

CHEN S, IN PRESS EUR PHYS J

[9] MASS SINGULARITIES IN LIGHT-QUARK CORRELATORS - THE STRANGE QUARK CASE [J].

CHETYRKIN, KG ;

DOMINGUEZ, CA ;

PIRJOL, D ;

SCHILCHER, K .

PHYSICAL REVIEW D, 1995, 51 (09) :5090-5100

[10] Order-alpha(3)(s) determination of the strange quark mass [J].

Chetyrkin, KG ;

Pirjol, D ;

Schilcher, K .

PHYSICS LETTERS B, 1997, 404 (3-4) :337-344

← 1 2 3 4 5 6 →