Study of the decay K+→π+νν̄ in the momentum region 140<Pπ<199MeV/c

A. V. Artamonov, B. Bassalleck, B. Bhuyan, E. W. Blackmore, D. A. Bryman, S. Chen, I. H. Chiang, I. A. Christidi, P. S. Cooper, M. V. Diwan, J. S. Frank, T. Fujiwara, J. Hu, J. Ives, D. E. Jaffe, S. Kabe, S. H. Kettell, M. M. Khabibullin, A. N. Khotjantsev, P. KitchingM. Kobayashi, T. K. Komatsubara, A. Konaka, A. P. Kozhevnikov, Yu G. Kudenko, A. Kushnirenko, L. G. Landsberg, B. Lewis, K. K. Li, L. S. Littenberg, J. A. MacDonald, J. Mildenberger, O. V. Mineev, M. Miyajima, K. Mizouchi, V. A. Mukhin, N. Muramatsu, T. Nakano, M. Nomachi, T. Nomura, T. Numao, V. F. Obraztsov, K. Omata, D. I. Patalakha, S. V. Petrenko, R. Poutissou, E. J. Ramberg, G. Redlinger, T. Sato, T. Sekiguchi, T. Shinkawa, R. C. Strand, S. Sugimoto, Y. Tamagawa, R. Tschirhart, T. Tsunemi, D. V. Vavilov, B. Viren, Zhe Wang, N. V. Yershov, Y. Yoshimura, T. Yoshioka

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Abstract

Experiment E949 at Brookhaven National Laboratory has observed three new events consistent with the decay K+→π+νν̄ in the pion momentum region 140<Pπ<199MeV/c in an exposure of 1.71×1012 stopped kaons with an estimated total background of 0.93±0.17(stat)-0. 24+0.32(syst) events. This brings the total number of observed K+→π+νν̄ events to seven. Combining this observation with previous results, assuming the pion spectrum predicted by the standard model, results in a branching ratio of B(K+→π+νν̄)=(1.73-1.05+1.15) ×10-10. An interpretation of the results for alternative models of the decay K+→π++nothing is also presented.

Original languageEnglish
Article number092004
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume79
Issue number9
DOIs
Publication statusPublished - May 1 2009

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momentum
decay
pions
kaons

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Cite this

Study of the decay K+→π+νν̄ in the momentum region 140<Pπ<199MeV/c. / Artamonov, A. V.; Bassalleck, B.; Bhuyan, B.; Blackmore, E. W.; Bryman, D. A.; Chen, S.; Chiang, I. H.; Christidi, I. A.; Cooper, P. S.; Diwan, M. V.; Frank, J. S.; Fujiwara, T.; Hu, J.; Ives, J.; Jaffe, D. E.; Kabe, S.; Kettell, S. H.; Khabibullin, M. M.; Khotjantsev, A. N.; Kitching, P.; Kobayashi, M.; Komatsubara, T. K.; Konaka, A.; Kozhevnikov, A. P.; Kudenko, Yu G.; Kushnirenko, A.; Landsberg, L. G.; Lewis, B.; Li, K. K.; Littenberg, L. S.; MacDonald, J. A.; Mildenberger, J.; Mineev, O. V.; Miyajima, M.; Mizouchi, K.; Mukhin, V. A.; Muramatsu, N.; Nakano, T.; Nomachi, M.; Nomura, T.; Numao, T.; Obraztsov, V. F.; Omata, K.; Patalakha, D. I.; Petrenko, S. V.; Poutissou, R.; Ramberg, E. J.; Redlinger, G.; Sato, T.; Sekiguchi, T.; Shinkawa, T.; Strand, R. C.; Sugimoto, S.; Tamagawa, Y.; Tschirhart, R.; Tsunemi, T.; Vavilov, D. V.; Viren, B.; Wang, Zhe; Yershov, N. V.; Yoshimura, Y.; Yoshioka, T.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 79, No. 9, 092004, 01.05.2009.

Research output: Contribution to journalArticle

Artamonov, AV, Bassalleck, B, Bhuyan, B, Blackmore, EW, Bryman, DA, Chen, S, Chiang, IH, Christidi, IA, Cooper, PS, Diwan, MV, Frank, JS, Fujiwara, T, Hu, J, Ives, J, Jaffe, DE, Kabe, S, Kettell, SH, Khabibullin, MM, Khotjantsev, AN, Kitching, P, Kobayashi, M, Komatsubara, TK, Konaka, A, Kozhevnikov, AP, Kudenko, YG, Kushnirenko, A, Landsberg, LG, Lewis, B, Li, KK, Littenberg, LS, MacDonald, JA, Mildenberger, J, Mineev, OV, Miyajima, M, Mizouchi, K, Mukhin, VA, Muramatsu, N, Nakano, T, Nomachi, M, Nomura, T, Numao, T, Obraztsov, VF, Omata, K, Patalakha, DI, Petrenko, SV, Poutissou, R, Ramberg, EJ, Redlinger, G, Sato, T, Sekiguchi, T, Shinkawa, T, Strand, RC, Sugimoto, S, Tamagawa, Y, Tschirhart, R, Tsunemi, T, Vavilov, DV, Viren, B, Wang, Z, Yershov, NV, Yoshimura, Y & Yoshioka, T 2009, 'Study of the decay K+→π+νν̄ in the momentum region 140<Pπ<199MeV/c', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 79, no. 9, 092004. https://doi.org/10.1103/PhysRevD.79.092004
Artamonov, A. V. ; Bassalleck, B. ; Bhuyan, B. ; Blackmore, E. W. ; Bryman, D. A. ; Chen, S. ; Chiang, I. H. ; Christidi, I. A. ; Cooper, P. S. ; Diwan, M. V. ; Frank, J. S. ; Fujiwara, T. ; Hu, J. ; Ives, J. ; Jaffe, D. E. ; Kabe, S. ; Kettell, S. H. ; Khabibullin, M. M. ; Khotjantsev, A. N. ; Kitching, P. ; Kobayashi, M. ; Komatsubara, T. K. ; Konaka, A. ; Kozhevnikov, A. P. ; Kudenko, Yu G. ; Kushnirenko, A. ; Landsberg, L. G. ; Lewis, B. ; Li, K. K. ; Littenberg, L. S. ; MacDonald, J. A. ; Mildenberger, J. ; Mineev, O. V. ; Miyajima, M. ; Mizouchi, K. ; Mukhin, V. A. ; Muramatsu, N. ; Nakano, T. ; Nomachi, M. ; Nomura, T. ; Numao, T. ; Obraztsov, V. F. ; Omata, K. ; Patalakha, D. I. ; Petrenko, S. V. ; Poutissou, R. ; Ramberg, E. J. ; Redlinger, G. ; Sato, T. ; Sekiguchi, T. ; Shinkawa, T. ; Strand, R. C. ; Sugimoto, S. ; Tamagawa, Y. ; Tschirhart, R. ; Tsunemi, T. ; Vavilov, D. V. ; Viren, B. ; Wang, Zhe ; Yershov, N. V. ; Yoshimura, Y. ; Yoshioka, T. / Study of the decay K+→π+νν̄ in the momentum region 140<Pπ<199MeV/c. In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 2009 ; Vol. 79, No. 9.
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title = "Study of the decay K+→π+νν̄ in the momentum region 140<Pπ<199MeV/c",
abstract = "Experiment E949 at Brookhaven National Laboratory has observed three new events consistent with the decay K+→π+νν̄ in the pion momentum region 140<Pπ<199MeV/c in an exposure of 1.71×1012 stopped kaons with an estimated total background of 0.93±0.17(stat)-0. 24+0.32(syst) events. This brings the total number of observed K+→π+νν̄ events to seven. Combining this observation with previous results, assuming the pion spectrum predicted by the standard model, results in a branching ratio of B(K+→π+νν̄)=(1.73-1.05+1.15) ×10-10. An interpretation of the results for alternative models of the decay K+→π++nothing is also presented.",
author = "Artamonov, {A. V.} and B. Bassalleck and B. Bhuyan and Blackmore, {E. W.} and Bryman, {D. A.} and S. Chen and Chiang, {I. H.} and Christidi, {I. A.} and Cooper, {P. S.} and Diwan, {M. V.} and Frank, {J. S.} and T. Fujiwara and J. Hu and J. Ives and Jaffe, {D. E.} and S. Kabe and Kettell, {S. H.} and Khabibullin, {M. M.} and Khotjantsev, {A. N.} and P. Kitching and M. Kobayashi and Komatsubara, {T. K.} and A. Konaka and Kozhevnikov, {A. P.} and Kudenko, {Yu G.} and A. Kushnirenko and Landsberg, {L. G.} and B. Lewis and Li, {K. K.} and Littenberg, {L. S.} and MacDonald, {J. A.} and J. Mildenberger and Mineev, {O. V.} and M. Miyajima and K. Mizouchi and Mukhin, {V. A.} and N. Muramatsu and T. Nakano and M. Nomachi and T. Nomura and T. Numao and Obraztsov, {V. F.} and K. Omata and Patalakha, {D. I.} and Petrenko, {S. V.} and R. Poutissou and Ramberg, {E. J.} and G. Redlinger and T. Sato and T. Sekiguchi and T. Shinkawa and Strand, {R. C.} and S. Sugimoto and Y. Tamagawa and R. Tschirhart and T. Tsunemi and Vavilov, {D. V.} and B. Viren and Zhe Wang and Yershov, {N. V.} and Y. Yoshimura and T. Yoshioka",
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T1 - Study of the decay K+→π+νν̄ in the momentum region 140<Pπ<199MeV/c

AU - Artamonov, A. V.

AU - Bassalleck, B.

AU - Bhuyan, B.

AU - Blackmore, E. W.

AU - Bryman, D. A.

AU - Chen, S.

AU - Chiang, I. H.

AU - Christidi, I. A.

AU - Cooper, P. S.

AU - Diwan, M. V.

AU - Frank, J. S.

AU - Fujiwara, T.

AU - Hu, J.

AU - Ives, J.

AU - Jaffe, D. E.

AU - Kabe, S.

AU - Kettell, S. H.

AU - Khabibullin, M. M.

AU - Khotjantsev, A. N.

AU - Kitching, P.

AU - Kobayashi, M.

AU - Komatsubara, T. K.

AU - Konaka, A.

AU - Kozhevnikov, A. P.

AU - Kudenko, Yu G.

AU - Kushnirenko, A.

AU - Landsberg, L. G.

AU - Lewis, B.

AU - Li, K. K.

AU - Littenberg, L. S.

AU - MacDonald, J. A.

AU - Mildenberger, J.

AU - Mineev, O. V.

AU - Miyajima, M.

AU - Mizouchi, K.

AU - Mukhin, V. A.

AU - Muramatsu, N.

AU - Nakano, T.

AU - Nomachi, M.

AU - Nomura, T.

AU - Numao, T.

AU - Obraztsov, V. F.

AU - Omata, K.

AU - Patalakha, D. I.

AU - Petrenko, S. V.

AU - Poutissou, R.

AU - Ramberg, E. J.

AU - Redlinger, G.

AU - Sato, T.

AU - Sekiguchi, T.

AU - Shinkawa, T.

AU - Strand, R. C.

AU - Sugimoto, S.

AU - Tamagawa, Y.

AU - Tschirhart, R.

AU - Tsunemi, T.

AU - Vavilov, D. V.

AU - Viren, B.

AU - Wang, Zhe

AU - Yershov, N. V.

AU - Yoshimura, Y.

AU - Yoshioka, T.

PY - 2009/5/1

Y1 - 2009/5/1

N2 - Experiment E949 at Brookhaven National Laboratory has observed three new events consistent with the decay K+→π+νν̄ in the pion momentum region 140<Pπ<199MeV/c in an exposure of 1.71×1012 stopped kaons with an estimated total background of 0.93±0.17(stat)-0. 24+0.32(syst) events. This brings the total number of observed K+→π+νν̄ events to seven. Combining this observation with previous results, assuming the pion spectrum predicted by the standard model, results in a branching ratio of B(K+→π+νν̄)=(1.73-1.05+1.15) ×10-10. An interpretation of the results for alternative models of the decay K+→π++nothing is also presented.

AB - Experiment E949 at Brookhaven National Laboratory has observed three new events consistent with the decay K+→π+νν̄ in the pion momentum region 140<Pπ<199MeV/c in an exposure of 1.71×1012 stopped kaons with an estimated total background of 0.93±0.17(stat)-0. 24+0.32(syst) events. This brings the total number of observed K+→π+νν̄ events to seven. Combining this observation with previous results, assuming the pion spectrum predicted by the standard model, results in a branching ratio of B(K+→π+νν̄)=(1.73-1.05+1.15) ×10-10. An interpretation of the results for alternative models of the decay K+→π++nothing is also presented.

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U2 - 10.1103/PhysRevD.79.092004

DO - 10.1103/PhysRevD.79.092004

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