Dispersive analysis of KLμ3 and KLe3 scalar and vector form factors using KTeV data

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; Véronique Bernard; Micaela Oertel; Emilie Passemar; Jan Stern

doi:10.1103/PhysRevD.81.052001

Dispersive analysis of KLμ3 and KLe3 scalar and vector form factors using KTeV data

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. LedovskoyP. 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, Véronique Bernard, Micaela Oertel, Emilie Passemar, Jan Stern

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Abstract

Using the published KTeV samples of KL→π^±e ^"ν and KL→π^±μ ^"ν decays, we perform a reanalysis of the scalar and vector form factors based on the dispersive parametrization. We obtain phase-space integrals IKe=0.15446±0.00025 and IKμ=0.10219±0.00025. For the scalar form factor parametrization, the only free parameter is the normalized form factor value at the Callan-Treiman point (C); our best-fit results in lnC=0.1915±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 FK/Fπ and f+(0).

Original language	English (US)
Article number	052001
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	81
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevD.81.052001
State	Published - Mar 4 2010
Externally published	Yes

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10.1103/PhysRevD.81.052001

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Abouzaid, E., Arenton, M., Barker, A. R., Bellantoni, L., Blucher, E., Bock, G. J., Cheu, E., Coleman, R., Corcoran, M. D., Cox, B., Erwin, A. R., Escobar, C. O., Glazov, A., Gomes, R. A., Gouffon, P., Hsiung, Y. B., Jensen, D. A., Kessler, R., Kotera, K., ... Stern, J. (2010). Dispersive analysis of KLμ3 and KLe3 scalar and vector form factors using KTeV data. Physical Review D - Particles, Fields, Gravitation and Cosmology, 81(5), Article 052001. https://doi.org/10.1103/PhysRevD.81.052001

Abouzaid, E, Arenton, M, Barker, AR, Bellantoni, L, Blucher, E, Bock, GJ, Cheu, E, Coleman, R, Corcoran, MD, Cox, B, Erwin, AR, Escobar, CO, Glazov, A, Gomes, RA, Gouffon, P, Hsiung, YB, Jensen, DA, Kessler, R, Kotera, K, Ledovskoy, A, McBride, PL, Monnier, E, Nguyen, H, Niclasen, R, Phillips, DG, Ramberg, EJ, Ray, RE, Ronquest, M, Santos, E, Slater, W, Smith, D, Solomey, N, Swallow, EC, Toale, PA, Tschirhart, R, Wah, YW, Wang, J, White, HB, Whitmore, J, Wilking, MJ, Winston, R, Worcester, ET, Yamanaka, T, Zimmerman, ED, Zukanovich, RF, Bernard, V, Oertel, M, Passemar, E & Stern, J 2010, 'Dispersive analysis of KLμ3 and KLe3 scalar and vector form factors using KTeV data', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 81, no. 5, 052001. https://doi.org/10.1103/PhysRevD.81.052001

@article{51c8e99d64d546ffb719e58a97bcd609,

title = "Dispersive analysis of KLμ3 and KLe3 scalar and vector form factors using KTeV data",

abstract = "Using the published KTeV samples of KL→π±e {"}ν and KL→π±μ {"}ν decays, we perform a reanalysis of the scalar and vector form factors based on the dispersive parametrization. We obtain phase-space integrals IKe=0.15446±0.00025 and IKμ=0.10219±0.00025. For the scalar form factor parametrization, the only free parameter is the normalized form factor value at the Callan-Treiman point (C); our best-fit results in lnC=0.1915±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 FK/Fπ and f+(0).",

author = "E. Abouzaid and M. Arenton and Barker, {A. R.} and L. Bellantoni and E. Blucher and Bock, {G. J.} and E. Cheu and R. Coleman and Corcoran, {M. D.} and B. Cox and Erwin, {A. R.} and Escobar, {C. O.} and A. Glazov and Gomes, {R. A.} and P. Gouffon and Hsiung, {Y. B.} and Jensen, {D. A.} and R. Kessler and K. Kotera and A. Ledovskoy and McBride, {P. L.} and E. Monnier and H. Nguyen and R. Niclasen and Phillips, {D. G.} and Ramberg, {E. J.} and Ray, {R. E.} and M. Ronquest and E. Santos and W. Slater and D. Smith and N. Solomey and Swallow, {E. C.} and Toale, {P. A.} and R. Tschirhart and Wah, {Y. W.} and J. Wang and White, {H. B.} and J. Whitmore and Wilking, {M. J.} and R. Winston and Worcester, {E. T.} and T. Yamanaka and Zimmerman, {E. D.} and Zukanovich, {R. F.} and V{\'e}ronique Bernard and Micaela Oertel and Emilie Passemar and Jan Stern",

year = "2010",

month = mar,

day = "4",

doi = "10.1103/PhysRevD.81.052001",

language = "English (US)",

volume = "81",

journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",

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TY - JOUR

T1 - Dispersive analysis of KLμ3 and KLe3 scalar and vector form factors using KTeV data

AU - Abouzaid, E.

AU - Arenton, M.

AU - Barker, A. R.

AU - Bellantoni, L.

AU - Blucher, E.

AU - Bock, G. J.

AU - Cheu, E.

AU - Coleman, R.

AU - Corcoran, M. D.

AU - Cox, B.

AU - Erwin, A. R.

AU - Escobar, C. O.

AU - Glazov, A.

AU - Gomes, R. A.

AU - Gouffon, P.

AU - Hsiung, Y. B.

AU - Jensen, D. A.

AU - Kessler, R.

AU - Kotera, K.

AU - Ledovskoy, A.

AU - McBride, P. L.

AU - Monnier, E.

AU - Nguyen, H.

AU - Niclasen, R.

AU - Phillips, D. G.

AU - Ramberg, E. J.

AU - Ray, R. E.

AU - Ronquest, M.

AU - Santos, E.

AU - Slater, W.

AU - Smith, D.

AU - Solomey, N.

AU - Swallow, E. C.

AU - Toale, P. A.

AU - Tschirhart, R.

AU - Wah, Y. W.

AU - Wang, J.

AU - White, H. B.

AU - Whitmore, J.

AU - Wilking, M. J.

AU - Winston, R.

AU - Worcester, E. T.

AU - Yamanaka, T.

AU - Zimmerman, E. D.

AU - Zukanovich, R. F.

AU - Bernard, Véronique

AU - Oertel, Micaela

AU - Passemar, Emilie

AU - Stern, Jan

PY - 2010/3/4

Y1 - 2010/3/4

N2 - Using the published KTeV samples of KL→π±e "ν and KL→π±μ "ν decays, we perform a reanalysis of the scalar and vector form factors based on the dispersive parametrization. We obtain phase-space integrals IKe=0.15446±0.00025 and IKμ=0.10219±0.00025. For the scalar form factor parametrization, the only free parameter is the normalized form factor value at the Callan-Treiman point (C); our best-fit results in lnC=0.1915±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 FK/Fπ and f+(0).

AB - Using the published KTeV samples of KL→π±e "ν and KL→π±μ "ν decays, we perform a reanalysis of the scalar and vector form factors based on the dispersive parametrization. We obtain phase-space integrals IKe=0.15446±0.00025 and IKμ=0.10219±0.00025. For the scalar form factor parametrization, the only free parameter is the normalized form factor value at the Callan-Treiman point (C); our best-fit results in lnC=0.1915±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 FK/Fπ and f+(0).

UR - http://www.scopus.com/inward/record.url?scp=77950590105&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77950590105&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.81.052001

DO - 10.1103/PhysRevD.81.052001

M3 - Article

AN - SCOPUS:77950590105

SN - 1550-7998

VL - 81

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

IS - 5

M1 - 052001

ER -

Dispersive analysis of KLμ3 and KLe3 scalar and vector form factors using KTeV data

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