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Journal articles
Dispersive analysis of K_{L mu3} and K_{L e3} scalar and vector form factors using KTeV data
V. Bernard
1
M. Oertel
2
E. Passemar
1
J. Stern
1
E. Abouzaid
M. Arenton
A.R. Barker
L. Bellantoni
E. Blucher
G. J. Bock
E. Cheu
R. Coleman
M.D. Corcoran
B. Cox
A.R. Erwin
C.O. Escobar
A. Glazov
R.A. Gomes
P. Gouffon
Y. B. Hsiung
D.A. Jensen
R. Kessler
K. Kotera
A. Ledovskoy
P. L. Mcbride
E. Monnier
H. Nguyen
R. Niclasen
D.G. Phillips
E.J. Ramberg
R.E. Ray
M. Ronquest
E. Santos
W. Slater
D. Smith
N. Solomey
E. C. Swallow
P. A. Toale
R. Tschirhart
Y. W. Wah
J. Wang
H. B. White
J. Whitmore
M. J. Wilking
R. Winston
E.T. Worcester
T. Yamanaka
E. D. Zimmerman
R.F. Zukanovich
R.F. Zukanovich
Author
1
IPNO - Institut de Physique Nucléaire d'Orsay (IPN - 15, rue Georges Clemenceau - 91406 ORSAY CEDEX - France)
- CNRS - Centre National de la Recherche Scientifique : UMR8608 (France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- UP11 - Université Paris-Sud - Paris 11 (Bâtiment 300 - 91405 Orsay cedex - France)
2
LUTH (UMR_8102) - Laboratoire Univers et Théories (5 place Jules Janssen 92195 Meudon cedex - France)
- INSU - CNRS - Institut national des sciences de l'Univers (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- Observatoire de Paris (61 Av de l'Observatoire 75014 PARIS - France)
- PSL - Université Paris sciences et lettres (60 rue Mazarine 75006 Paris - France)
- UPD7 - Université Paris Diderot - Paris 7 : UMR_8102 (5 rue Thomas-Mann - 75205 Paris cedex 13 - France)
- CNRS - Centre National de la Recherche Scientifique : UMR_8102 (France)
Abstract : Using the published KTeV samples of K_L --> pi^{\pm} e^{\mp} nu and K_L --> pi^{\pm} mu^{\mp} nu decays [1], we perform a reanalysis of the scalar and vector form factors based on the dispersive parameterization [2,3]. We obtain phase space integrals I^e_K = 0.15446 \pm 0.00025 and I^{mu}_K = 0.10219 \pm 0.00025. For the scalar form factor parameterization, the only free parameter is the normalized form factor value at the Callan-Treiman point (C); our best fit results in ln C = 0.1915 \pm 0.0122. We also study the sensitivity of C to different parametrizations of the vector form factor. The results for the phase space integrals and C are then used to make tests of the Standard Model. Finally, we compare our results with lattice QCD calculations of F_K/F_pi and f_+(0).
Document type :
Journal articles
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http://hal.in2p3.fr/in2p3-00454551
Contributor : Sophie Heurteau <>
Submitted on : Tuesday, February 9, 2010 - 2:51:05 PM
Last modification on : Wednesday, September 23, 2020 - 4:38:16 AM
Contributor : Sophie Heurteau <>
Submitted on : Tuesday, February 9, 2010 - 2:51:05 PM
Last modification on : Wednesday, September 23, 2020 - 4:38:16 AM
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- HAL Id : in2p3-00454551, version 1
- ARXIV : 0912.1291
- DOI : 10.1103/PhysRevD.81.052001
Collections
IPNO | CNRS | LUTH | INSU | OBSPM | IN2P3 | UNIV-PARIS7 | USPC | UP-SCIENCES | PSL
Citation
V. Bernard, M. Oertel, E. Passemar, J. Stern, E. Abouzaid, et al.. Dispersive analysis of K_{L mu3} and K_{L e3} scalar and vector form factors using KTeV data. Physical Review D, American Physical Society, 2010, 81, pp.052001. ⟨10.1103/PhysRevD.81.052001⟩. ⟨in2p3-00454551⟩
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