Measurement of the K+→π0μ+νμγ branching ratio

S. Adler; A. O. Bazarko; P. C. Bergbusch; E. W. Blackmore; D. A. Bryman; S. Chen; I. H. Chiang; M. V. Diwan; J. S. Frank; T. Fujiwara; J. S. Haggerty; J. Hu; T. Inagaki; M. M. Ito; D. E. Jaffe; V. Jain; S. Kabe; S. H. Kettell; P. Kitching; M. Kobayashi; T. K. Komatsubara; A. Konaka; Y. Kuno; M. Kuriki; K. K. Li; L. S. Littenberg; J. A. MacDonald; P. D. Meyers; J. Mildenberger; M. Miyajima; N. Muramatsu; T. Nakano; C. Ng; S. Ng; T. Nomura; T. Numao; J. M. Poutissou; R. Poutissou; G. Redlinger; T. Sato; K. Shimada; T. Shimoyama; T. Shinkawa; F. C. Shoemaker; J. R. Stone; R. C. Strand; S. Sugimoto; Y. Tamagawa; T. Tsunemi; C. Witzig; Y. Yoshimura

doi:10.1103/PhysRevD.81.092001

Measurement of the K⁺→π0μ⁺νμγ branching ratio

S. Adler, A. O. Bazarko, P. C. Bergbusch, E. W. Blackmore, D. A. Bryman, S. Chen, I. H. Chiang, M. V. Diwan, J. S. Frank, T. Fujiwara, J. S. Haggerty, J. Hu, T. Inagaki, M. M. Ito, D. E. Jaffe, V. Jain, S. Kabe, S. H. Kettell, P. Kitching, M. KobayashiT. K. Komatsubara, A. Konaka, Y. Kuno, M. Kuriki, K. K. Li, L. S. Littenberg, J. A. MacDonald, P. D. Meyers, J. Mildenberger, M. Miyajima, N. Muramatsu, T. Nakano, C. Ng, S. Ng, T. Nomura, T. Numao, J. M. Poutissou, R. Poutissou, G. Redlinger, T. Sato, K. Shimada, T. Shimoyama, T. Shinkawa, F. C. Shoemaker, J. R. Stone, R. C. Strand, S. Sugimoto, Y. Tamagawa, T. Tsunemi, C. Witzig, Y. Yoshimura

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Abstract

A measurement of the decay K⁺→π0μ⁺νμ γ has been performed with the E787 detector at Brookhaven National Laboratory. Forty events were observed in the signal region with the background expectation of (16.5±2.7) events. The branching ratio was measured to be (1.58±0.46(stat.)±0.08(syst.))×10^-5 in the kinematic region Eγ>30MeV and θμγ>20°, where Eγ is the energy of the emitted photon and θμγ is the angle between the muon and the photon in the K⁺ rest frame. The results were consistent with theoretical predictions.

Original language	English (US)
Article number	092001
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	81
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevD.81.092001
State	Published - May 3 2010

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

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10.1103/PhysRevD.81.092001

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Adler, S., Bazarko, A. O., Bergbusch, P. C., Blackmore, E. W., Bryman, D. A., Chen, S., Chiang, I. H., Diwan, M. V., Frank, J. S., Fujiwara, T., Haggerty, J. S., Hu, J., Inagaki, T., Ito, M. M., Jaffe, D. E., Jain, V., Kabe, S., Kettell, S. H., Kitching, P., ... Yoshimura, Y. (2010). Measurement of the K⁺→π0μ⁺νμγ branching ratio. Physical Review D - Particles, Fields, Gravitation and Cosmology, 81(9), Article 092001. https://doi.org/10.1103/PhysRevD.81.092001

@article{ee4c5e10b7af4322a4304631a9ec158b,

title = "Measurement of the K+→π0μ+νμγ branching ratio",

abstract = "A measurement of the decay K+→π0μ+νμ γ has been performed with the E787 detector at Brookhaven National Laboratory. Forty events were observed in the signal region with the background expectation of (16.5±2.7) events. The branching ratio was measured to be (1.58±0.46(stat.)±0.08(syst.))×10-5 in the kinematic region Eγ>30MeV and θμγ>20°, where Eγ is the energy of the emitted photon and θμγ is the angle between the muon and the photon in the K+ rest frame. The results were consistent with theoretical predictions.",

author = "S. Adler and Bazarko, {A. O.} and Bergbusch, {P. C.} and Blackmore, {E. W.} and Bryman, {D. A.} and S. Chen and Chiang, {I. H.} and Diwan, {M. V.} and Frank, {J. S.} and T. Fujiwara and Haggerty, {J. S.} and J. Hu and T. Inagaki and Ito, {M. M.} and Jaffe, {D. E.} and V. Jain and S. Kabe and Kettell, {S. H.} and P. Kitching and M. Kobayashi and Komatsubara, {T. K.} and A. Konaka and Y. Kuno and M. Kuriki and Li, {K. K.} and Littenberg, {L. S.} and MacDonald, {J. A.} and Meyers, {P. D.} and J. Mildenberger and M. Miyajima and N. Muramatsu and T. Nakano and C. Ng and S. Ng and T. Nomura and T. Numao and Poutissou, {J. M.} and R. Poutissou and G. Redlinger and T. Sato and K. Shimada and T. Shimoyama and T. Shinkawa and Shoemaker, {F. C.} and Stone, {J. R.} and Strand, {R. C.} and S. Sugimoto and Y. Tamagawa and T. Tsunemi and C. Witzig and Y. Yoshimura",

note = "Funding Information: Our profound thanks are due to the State Government and Forest Department of Sarawak for their helpful support. We also wish to thank Datuk Leo Chai C. L., Drs. S. Tamura, Y. Takai, and K. Ogino for their attentive suggestions during the research. We are particularly indebted to Mr. E. O. Chai and the staff at the Silviculture Research Office, Sibu, Sarawak for their friendly collaboration and extraordinary contribution to the establishment of the research plot. We would also like to thank Dr. Lee Hua Seng, Hj. Abang Abdul Hamid, and Dr. James V. LaFrankie for their helpful collaboration. Dr. T. Ohkubo and Mr. P. Palmiotto kindly permitted us to use their original data and Mr. J. Melton edited the English text. This study was financially supported by Nippon Life Insurance Foundation, International Scientific Research Program from Ministry of Education, Sport, Science and Culture, Japan and the National Science Foundation, USA (DEB-9629601).",

year = "2010",

month = may,

day = "3",

doi = "10.1103/PhysRevD.81.092001",

language = "English (US)",

volume = "81",

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

issn = "1550-7998",

number = "9",

}

Adler, S, Bazarko, AO, Bergbusch, PC, Blackmore, EW, Bryman, DA, Chen, S, Chiang, IH, Diwan, MV, Frank, JS, Fujiwara, T, Haggerty, JS, Hu, J, Inagaki, T, Ito, MM, Jaffe, DE, Jain, V, Kabe, S, Kettell, SH, Kitching, P, Kobayashi, M, Komatsubara, TK, Konaka, A, Kuno, Y, Kuriki, M, Li, KK, Littenberg, LS, MacDonald, JA, Meyers, PD, Mildenberger, J, Miyajima, M, Muramatsu, N, Nakano, T, Ng, C, Ng, S, Nomura, T, Numao, T, Poutissou, JM, Poutissou, R, Redlinger, G, Sato, T, Shimada, K, Shimoyama, T, Shinkawa, T, Shoemaker, FC, Stone, JR, Strand, RC, Sugimoto, S, Tamagawa, Y, Tsunemi, T, Witzig, C & Yoshimura, Y 2010, 'Measurement of the K⁺→π0μ⁺νμγ branching ratio', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 81, no. 9, 092001. https://doi.org/10.1103/PhysRevD.81.092001

TY - JOUR

T1 - Measurement of the K+→π0μ+νμγ branching ratio

AU - Adler, S.

AU - Bazarko, A. O.

AU - Bergbusch, P. C.

AU - Blackmore, E. W.

AU - Bryman, D. A.

AU - Chen, S.

AU - Chiang, I. H.

AU - Diwan, M. V.

AU - Frank, J. S.

AU - Fujiwara, T.

AU - Haggerty, J. S.

AU - Hu, J.

AU - Inagaki, T.

AU - Ito, M. M.

AU - Jaffe, D. E.

AU - Jain, V.

AU - Kabe, S.

AU - Kettell, S. H.

AU - Kitching, P.

AU - Kobayashi, M.

AU - Komatsubara, T. K.

AU - Konaka, A.

AU - Kuno, Y.

AU - Kuriki, M.

AU - Li, K. K.

AU - Littenberg, L. S.

AU - MacDonald, J. A.

AU - Meyers, P. D.

AU - Mildenberger, J.

AU - Miyajima, M.

AU - Muramatsu, N.

AU - Nakano, T.

AU - Ng, C.

AU - Ng, S.

AU - Nomura, T.

AU - Numao, T.

AU - Poutissou, J. M.

AU - Poutissou, R.

AU - Redlinger, G.

AU - Sato, T.

AU - Shimada, K.

AU - Shimoyama, T.

AU - Shinkawa, T.

AU - Shoemaker, F. C.

AU - Stone, J. R.

AU - Strand, R. C.

AU - Sugimoto, S.

AU - Tamagawa, Y.

AU - Tsunemi, T.

AU - Witzig, C.

AU - Yoshimura, Y.

N1 - Funding Information: Our profound thanks are due to the State Government and Forest Department of Sarawak for their helpful support. We also wish to thank Datuk Leo Chai C. L., Drs. S. Tamura, Y. Takai, and K. Ogino for their attentive suggestions during the research. We are particularly indebted to Mr. E. O. Chai and the staff at the Silviculture Research Office, Sibu, Sarawak for their friendly collaboration and extraordinary contribution to the establishment of the research plot. We would also like to thank Dr. Lee Hua Seng, Hj. Abang Abdul Hamid, and Dr. James V. LaFrankie for their helpful collaboration. Dr. T. Ohkubo and Mr. P. Palmiotto kindly permitted us to use their original data and Mr. J. Melton edited the English text. This study was financially supported by Nippon Life Insurance Foundation, International Scientific Research Program from Ministry of Education, Sport, Science and Culture, Japan and the National Science Foundation, USA (DEB-9629601).

PY - 2010/5/3

Y1 - 2010/5/3

N2 - A measurement of the decay K+→π0μ+νμ γ has been performed with the E787 detector at Brookhaven National Laboratory. Forty events were observed in the signal region with the background expectation of (16.5±2.7) events. The branching ratio was measured to be (1.58±0.46(stat.)±0.08(syst.))×10-5 in the kinematic region Eγ>30MeV and θμγ>20°, where Eγ is the energy of the emitted photon and θμγ is the angle between the muon and the photon in the K+ rest frame. The results were consistent with theoretical predictions.

AB - A measurement of the decay K+→π0μ+νμ γ has been performed with the E787 detector at Brookhaven National Laboratory. Forty events were observed in the signal region with the background expectation of (16.5±2.7) events. The branching ratio was measured to be (1.58±0.46(stat.)±0.08(syst.))×10-5 in the kinematic region Eγ>30MeV and θμγ>20°, where Eγ is the energy of the emitted photon and θμγ is the angle between the muon and the photon in the K+ rest frame. The results were consistent with theoretical predictions.

UR - http://www.scopus.com/inward/record.url?scp=77953143872&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77953143872&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.81.092001

DO - 10.1103/PhysRevD.81.092001

M3 - Article

AN - SCOPUS:77953143872

SN - 1550-7998

VL - 81

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

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

IS - 9

M1 - 092001

ER -

Measurement of the K⁺→π0μ⁺νμγ branching ratio

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