Measurements of the branching fraction and decay distributions for K L → π± μ∓ νγ and KL → π± e∓ νγ

T. Alexopoulos; T. Andre; M. Arenton; R. F. Barbosa; A. R. Barker; L. Bellantoni; A. Bellavance; E. Blucher; G. J. Bock; E. Cheu; S. Childress; R. Coleman; M. D. Corcoran; B. Cox; A. R. Erwin; R. Ford; A. Glazov; A. Golossanov; J. Graham; J. Hamm; K. Hanagaki; Y. B. Hsiung; H. Huang; V. Jejer; D. A. Jensen; R. Kessler; H. G.E. Kobrak; K. Kotera; J. LaDue; A. Ledovskoy; P. L. McBride; E. Monnier; K. S. Nelson; H. Nguyen; R. Niclasen; V. Prasad; X. R. Qi; E. J. Ramberg; R. E. Ray; M. Ronquest; E. Santos; P. Shanahan; J. Shields; 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. Wilking; B. Winstein; R. Winston; E. T. Worcester; T. Yamanaka; E. D. Zimmerman

doi:10.1103/PhysRevD.71.012001

Measurements of the branching fraction and decay distributions for K _L → π^± μ^∓ νγ and K_L → π± e∓ νγ

T. Alexopoulos, T. Andre, M. Arenton, R. F. Barbosa, A. R. Barker, L. Bellantoni, A. Bellavance, E. Blucher, G. J. Bock, E. Cheu, S. Childress, R. Coleman, M. D. Corcoran, B. Cox, A. R. Erwin, R. Ford, A. Glazov, A. Golossanov, J. Graham, J. HammK. Hanagaki, Y. B. Hsiung, H. Huang, V. Jejer, D. A. Jensen, R. Kessler, H. G.E. Kobrak, K. Kotera, J. LaDue, A. Ledovskoy, P. L. McBride, E. Monnier, K. S. Nelson, H. Nguyen, R. Niclasen, V. Prasad, X. R. Qi, E. J. Ramberg, R. E. Ray, M. Ronquest, E. Santos, P. Shanahan, J. Shields, 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. Wilking, B. Winstein, R. Winston, E. T. Worcester, T. Yamanaka, E. D. Zimmerman

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Abstract

We present measurements of ℛℓ3γ ≡ Γ(K _L →^±ℓ∓ νγ E _γ^* > 10 MeV)/Γ(K_L →± ℓ∓ν), where ℓ = μ or e, and E _γ^* is the photon energy in the kaon rest frame. These measurements are based on K_L decays collected in 1997 by the KTeV (E832) experiment at Fermilab. With samples of 1385 K_L → π^± μ^∓ νγ and 14221 K^L → π^± e^∓ νγ candidates, we find ℛ_Kμ3γ = (0.530 ± 0.019)% and ℛ_Ke3γ = (4.942 ± 0.062)%. We also examine distributions of photon energy and lepton-photon angle.

Original language	English (US)
Article number	012001
Pages (from-to)	012001-1-012001-12
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	71
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevD.71.012001
State	Published - Jan 2005
Externally published	Yes

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10.1103/PhysRevD.71.012001

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Alexopoulos, T., Andre, T., Arenton, M., Barbosa, R. F., Barker, A. R., Bellantoni, L., Bellavance, A., Blucher, E., Bock, G. J., Cheu, E., Childress, S., Coleman, R., Corcoran, M. D., Cox, B., Erwin, A. R., Ford, R., Glazov, A., Golossanov, A., Graham, J., ... Zimmerman, E. D. (2005). Measurements of the branching fraction and decay distributions for K _L → π^± μ^∓ νγ and K_L → π± e∓ νγ. Physical Review D - Particles, Fields, Gravitation and Cosmology, 71(1), 012001-1-012001-12. Article 012001. https://doi.org/10.1103/PhysRevD.71.012001

Alexopoulos, T, Andre, T, Arenton, M, Barbosa, RF, Barker, AR, Bellantoni, L, Bellavance, A, Blucher, E, Bock, GJ, Cheu, E, Childress, S, Coleman, R, Corcoran, MD, Cox, B, Erwin, AR, Ford, R, Glazov, A, Golossanov, A, Graham, J, Hamm, J, Hanagaki, K, Hsiung, YB, Huang, H, Jejer, V, Jensen, DA, Kessler, R, Kobrak, HGE, Kotera, K, LaDue, J, Ledovskoy, A, McBride, PL, Monnier, E, Nelson, KS, Nguyen, H, Niclasen, R, Prasad, V, Qi, XR, Ramberg, EJ, Ray, RE, Ronquest, M, Santos, E, Shanahan, P, Shields, J, Slater, W, Smith, D, Solomey, N, Swallow, EC, Toale, PA, Tschirhart, R, Wah, YW, Wang, J, White, HB, Whitmore, J, Wilking, M, Winstein, B, Winston, R, Worcester, ET, Yamanaka, T & Zimmerman, ED 2005, 'Measurements of the branching fraction and decay distributions for K _L → π^± μ^∓ νγ and K_L → π± e∓ νγ', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 71, no. 1, 012001, pp. 012001-1-012001-12. https://doi.org/10.1103/PhysRevD.71.012001

@article{4694268de4bd44fe99e82740ecb3301b,

title = "Measurements of the branching fraction and decay distributions for K L → π± μ∓ νγ and KL → π± e∓ νγ",

abstract = "We present measurements of ℛℓ3γ ≡ Γ(K L →±ℓ∓ νγ E γ* > 10 MeV)/Γ(KL →± ℓ∓ν), where ℓ = μ or e, and E γ* is the photon energy in the kaon rest frame. These measurements are based on KL decays collected in 1997 by the KTeV (E832) experiment at Fermilab. With samples of 1385 KL → π± μ∓ νγ and 14221 KL → π± e∓ νγ candidates, we find ℛKμ3γ = (0.530 ± 0.019)% and ℛKe3γ = (4.942 ± 0.062)%. We also examine distributions of photon energy and lepton-photon angle.",

author = "T. Alexopoulos and T. Andre and M. Arenton and Barbosa, {R. F.} and Barker, {A. R.} and L. Bellantoni and A. Bellavance and E. Blucher and Bock, {G. J.} and E. Cheu and S. Childress and R. Coleman and Corcoran, {M. D.} and B. Cox and Erwin, {A. R.} and R. Ford and A. Glazov and A. Golossanov and J. Graham and J. Hamm and K. Hanagaki and Hsiung, {Y. B.} and H. Huang and V. Jejer and Jensen, {D. A.} and R. Kessler and Kobrak, {H. G.E.} and K. Kotera and J. LaDue and A. Ledovskoy and McBride, {P. L.} and E. Monnier and Nelson, {K. S.} and H. Nguyen and R. Niclasen and V. Prasad and Qi, {X. R.} and Ramberg, {E. J.} and Ray, {R. E.} and M. Ronquest and E. Santos and P. Shanahan and J. Shields 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 M. Wilking and B. Winstein and R. Winston and Worcester, {E. T.} and T. Yamanaka and Zimmerman, {E. D.}",

year = "2005",

month = jan,

doi = "10.1103/PhysRevD.71.012001",

language = "English (US)",

volume = "71",

pages = "012001--1--012001--12",

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

issn = "1550-7998",

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TY - JOUR

T1 - Measurements of the branching fraction and decay distributions for K L → π± μ∓ νγ and KL → π± e∓ νγ

AU - Alexopoulos, T.

AU - Andre, T.

AU - Arenton, M.

AU - Barbosa, R. F.

AU - Barker, A. R.

AU - Bellantoni, L.

AU - Bellavance, A.

AU - Blucher, E.

AU - Bock, G. J.

AU - Cheu, E.

AU - Childress, S.

AU - Coleman, R.

AU - Corcoran, M. D.

AU - Cox, B.

AU - Erwin, A. R.

AU - Ford, R.

AU - Glazov, A.

AU - Golossanov, A.

AU - Graham, J.

AU - Hamm, J.

AU - Hanagaki, K.

AU - Hsiung, Y. B.

AU - Huang, H.

AU - Jejer, V.

AU - Jensen, D. A.

AU - Kessler, R.

AU - Kobrak, H. G.E.

AU - Kotera, K.

AU - LaDue, J.

AU - Ledovskoy, A.

AU - McBride, P. L.

AU - Monnier, E.

AU - Nelson, K. S.

AU - Nguyen, H.

AU - Niclasen, R.

AU - Prasad, V.

AU - Qi, X. R.

AU - Ramberg, E. J.

AU - Ray, R. E.

AU - Ronquest, M.

AU - Santos, E.

AU - Shanahan, P.

AU - Shields, J.

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.

AU - Winstein, B.

AU - Winston, R.

AU - Worcester, E. T.

AU - Yamanaka, T.

AU - Zimmerman, E. D.

PY - 2005/1

Y1 - 2005/1

N2 - We present measurements of ℛℓ3γ ≡ Γ(K L →±ℓ∓ νγ E γ* > 10 MeV)/Γ(KL →± ℓ∓ν), where ℓ = μ or e, and E γ* is the photon energy in the kaon rest frame. These measurements are based on KL decays collected in 1997 by the KTeV (E832) experiment at Fermilab. With samples of 1385 KL → π± μ∓ νγ and 14221 KL → π± e∓ νγ candidates, we find ℛKμ3γ = (0.530 ± 0.019)% and ℛKe3γ = (4.942 ± 0.062)%. We also examine distributions of photon energy and lepton-photon angle.

AB - We present measurements of ℛℓ3γ ≡ Γ(K L →±ℓ∓ νγ E γ* > 10 MeV)/Γ(KL →± ℓ∓ν), where ℓ = μ or e, and E γ* is the photon energy in the kaon rest frame. These measurements are based on KL decays collected in 1997 by the KTeV (E832) experiment at Fermilab. With samples of 1385 KL → π± μ∓ νγ and 14221 KL → π± e∓ νγ candidates, we find ℛKμ3γ = (0.530 ± 0.019)% and ℛKe3γ = (4.942 ± 0.062)%. We also examine distributions of photon energy and lepton-photon angle.

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U2 - 10.1103/PhysRevD.71.012001

DO - 10.1103/PhysRevD.71.012001

M3 - Article

AN - SCOPUS:84927762453

SN - 1550-7998

VL - 71

SP - 012001-1-012001-12

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

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

IS - 1

M1 - 012001

ER -

Measurements of the branching fraction and decay distributions for K _L → π^± μ^∓ νγ and K_L → π± e∓ νγ

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