FORM-FACTORS OF SEMILEPTONIC D-DECAYS FROM QCD SUM-RULES

被引:214
作者
BALL, P
BRAUN, VM
DOSCH, HG
机构
[1] Institut F̈r Theoretische Physik, Universität Heidelberg, D-6900 Heidelberg
[2] Leningrad Nuclear Physics Institute
来源
PHYSICAL REVIEW D | 1991年 / 44卷 / 11期
关键词
D O I
10.1103/PhysRevD.44.3567
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We give a detailed QCD sum-rule analysis of the semileptonic decays D+ --> K0e+-nu(e)BAR and D+ --> K0*e+-nu(e)BAR. We use the standard method based on expansion in Euclidean distance as well as a new set of sum rules on the light cone. We compare the results with current experimental data and results from quark models. Special attention is paid to the t dependence of the form factors. We find from our sum-rule analysis that for the vector form factors the usual pole model approximation works perfectly well, but is not adequate for the axial-vector form factors.
引用
收藏
页码:3567 / 3581
页数:15
相关论文
共 39 条
  • [1] OBSERVATION OF THE DECAYS DS--]PHI-E-NU-BAR AND D--]K-STAR0E-NU-BAR
    ALBRECHT, H
    [J]. PHYSICS LETTERS B, 1991, 255 (04) : 634 - 638
  • [2] ALIEV TM, 1983, SOV J NUCL PHYS+, V38, P936
  • [3] ALIEV TM, 1984, SOV J NUCL PHYS+, V40, P527
  • [4] ALIEV TM, IC89382 TRIEST REP
  • [5] WEAK MIXING ANGLES FROM SEMILEPTONIC DECAYS IN THE QUARK-MODEL - COMMENT
    ALTOMARI, T
    WOLFENSTEIN, L
    [J]. PHYSICAL REVIEW LETTERS, 1987, 58 (15) : 1583 - 1583
  • [6] CONSTRAINTS ON SEMILEPTONIC B-DECAYS FROM THE MEASUREMENT OF THE D-STAR POLARIZATION IN B-]D-STARE-NUBAR
    ALTOMARI, T
    WOLFENSTEIN, L
    [J]. PHYSICAL REVIEW D, 1988, 37 (03): : 681 - 687
  • [7] EXPERIMENTAL-STUDY OF THE SEMILEPTONIC DECAY D+-]KBAR-STAR-0E+NU-E
    ANJOS, JC
    APPEL, JA
    BEAN, A
    BRACKER, SB
    BROWDER, TE
    CREMALDI, LM
    DUBOSCQ, JE
    ELLIOTT, JR
    ESCOBAR, CO
    ESTABROOKS, P
    GIBNEY, MC
    HARTNER, GF
    KARCHIN, PE
    KUMAR, BR
    LOSTY, MJ
    LUSTE, GJ
    MANTSCH, PM
    MARTIN, JF
    MCHUGH, S
    MENARY, SR
    MORRISON, RJ
    NASH, T
    ONG, P
    PINFOLD, J
    PUNKAR, G
    PUROHIT, MV
    RAAB, JR
    SANTORO, AFS
    SIDHU, JS
    SLIWA, K
    SOKOLOFF, MD
    SOUZA, MHG
    SPALDING, WJ
    STREETMAN, ME
    STUNDZIA, AB
    WITHERELL, MS
    [J]. PHYSICAL REVIEW LETTERS, 1989, 62 (07) : 722 - 725
  • [8] MEASUREMENT OF THE FORM-FACTORS IN THE DECAY D+-]KBAR-STAROE+VE
    ANJOS, JC
    APPEL, JA
    BEAN, A
    BRACKER, SB
    BROWDER, TE
    CREMALDI, LM
    DUBOSCQ, JE
    ELLIOTT, JR
    ESCOBAR, CO
    GIBNEY, MC
    HARTNER, GF
    KARCHIN, PE
    KUMAR, BR
    LOSTY, MJ
    LUSTE, GJ
    MANTSCH, PM
    MARTIN, JF
    MCHUGH, S
    MENARY, SR
    MORRISON, RJ
    NASH, T
    ONG, P
    PINFOLD, J
    PUNKAR, G
    PUROHIT, MV
    SANTORO, AFS
    SCHMIDT, DM
    SIDHU, JS
    SLIWA, K
    SOKOLOFF, MD
    SOUZA, MHG
    SPALDING, WJ
    STREETMAN, ME
    STUNDZIA, AB
    WITHERELL, MS
    [J]. PHYSICAL REVIEW LETTERS, 1990, 65 (21) : 2630 - 2633
  • [9] MEASUREMENT OF THE HADRONIC STRUCTURE OF SEMILEPTONIC D(0) AND D(+) DECAYS
    BAI, Z
    [J]. PHYSICAL REVIEW LETTERS, 1991, 66 (08) : 1011 - 1014
  • [10] DECAY-B-]DL-NU-BAR FROM QCD SUM-RULES
    BAIER, VN
    GROZIN, AG
    [J]. ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1990, 47 (04): : 669 - 675