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13 results on '"Atiya MS"'

1. Measurement of direct photon emission in K+-->pi(+)pi(0)gamma decay

Author

Adler S, Aoki M, Ardebili M, Atiya MS, Bergbusch PC, Blackmore EW, Bryman DA, Chiang IH, Convery MR, Diwan MV, Frank JS, Haggerty JS, Inagaki T, Ito MM, Kabe S, Kettell SH, Kishi Y, Kitching P, Kobayashi M, Komatsubara TK, Konaka A, Kuno Y, Kuriki M, Kycia TF, Li KK, and Littenberg LS

Abstract

We have performed a measurement of the K+-->pi(+)pi(0)gamma decay and have observed 2x10(4) events. The best fit to the decay spectrum gives a branching ratio for direct photon emission of (4.7+/-0.8+/-0. 3)x10(-6) in the pi(+) kinetic energy region of 55 to 90 MeV and requires no component due to interference with inner bremsstrahlung.

Published
2000
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2. Measurement of structure-dependent K+ --> &mgr;(+)nu(&mgr;)gamma decay

Author

Adler S, Atiya MS, Chiang IH, Diwan MV, Frank JS, Haggerty JS, Kettell SH, Kycia TF, Li KK, Littenberg LS, Sambamurti A, Stevens A, Strand RC, Witzig C, Komatsubara TK, Kuriki M, Muramatsu N, Sugimoto S, Inagaki T, Kabe S, Kobayashi M, Kuno Y, Sato T, Shinkawa T, Yoshimura Y, and Kishi Y

Abstract

We report the first measurement of a structure-dependent component in the decay K+-->&mgr;(+)nu(&mgr;)gamma. Using the kinematic region where the muon kinetic energy is greater than 137 MeV and the photon energy is greater than 90 MeV, we find that the absolute value of the sum of the vector and axial-vector form factors is |F(V)+F(A)| = 0.165+/-0.007+/-0.011. This corresponds to a branching ratio of B(SD+) = (1.33+/-0.12+/-0.18)x10(-5). We also set the limit -0. 04

Published
2000
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3. Further search for the decay K+-->pi(+)nunu;

Author

Adler S, Atiya MS, Chiang IH, Diwan MV, Frank JS, Haggerty JS, Jain V V, Kettell SH, Kycia TF, Li KK, Littenberg LS, Ng C, Strand RC, Witzig C, Kazumori M, Komatsubara TK, Kuriki M, Muramatsu N, Otomo A, Sugimoto S, Inagaki T, Kabe S, Kobayashi M, Kuno Y, Sato T, and Shinkawa T

Abstract

A search for additional evidence for the rare kaon decay K+-->pi(+)nunu; has been made with a new data set comparable in sensitivity to the previous exposure that produced a single event. No new events were found in the pion momentum region examined, 211pi(+)nunu;) = 1.5(+3.4)(-1.2)x10(-10).

Published
2000
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4. Search for the decay K+--> pi + nu nu -bar.

Author

Adler S, Atiya MS, Chiang IH, Frank JS, Haggerty JS, Kycia TF, Li KK, Littenberg LS, Sambamurti A, Stevens A, Strand RC, Witzig C, Louis WC, Akerib DS, Ardebili M, Convery MR, Ito MM, Marlow DR, McPherson RA, Meyers PD, Selen MA, Shoemaker FC, Smith AJ, Blackmore EW, Bryman DA, Felawka L, Kitching P, Konaka A, Kujala VA, Kuno Y, Macdonald JA, Nakano T, Numao T, Padley P, Poutissou JM, Poutissou R, Roy J, Soluk R, and Turcot AS

Published
1996
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6. Search for the decay K+--> pi + nu nu -bar.

Author

Atiya MS, Chiang IH, Frank JS, Haggerty JS, Ito MM, Kycia TF, Li KK, Littenberg LS, Sambamurti A, Stevens A, Strand RC, Louis WC, Akerib DS, Marlow DR, Meyers PD, Selen MA, Shoemaker FC, Smith AJ, Blackmore EW, Bryman DA, Felawka L, Kitching P, Konaka A, Kuno Y, Macdonald JA, Numao T, Padley P, Poutissou JM, Poutissou R, Roy J, Soluk R, and Turcot AS

Published
1993
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7. Search for the decay pi 0--> gamma +X.

Author

Atiya MS, Chiang IH, Frank JS, Haggerty JS, Ito MM, Kycia TF, Li KK, Littenberg LS, Stevens AJ, Sambamurti A, Strand RC, Louis WC, Akerib DS, Marlow DR, Meyers PD, Selen MA, Shoemaker FC, Smith AJ, Blackmore EW, Bryman DA, Felawka L, Kitching P, Konaka A, Kuno Y, Macdonald JA, Numao T, Padley P, Poutissou JM, Poutissou R, Roy J, and Turcot AS

Published
1992
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8. Upper limit on the branching ratio for the decay pi 0--> nu nu -bar.

Author

Atiya MS, Chiang IH, Frank JS, Haggerty JS, Ito MM, Kycia TF, Li KK, Littenberg LS, Stevens A, Strand RC, Louis WC, Akerib DS, Marlow DR, Meyers PD, Selen MA, Shoemaker FC, Smith AJ, Azuelos G, Blackmore EW, Bryman DA, Felawka L, Kitching P, Kuno Y, Macdonald JA, Numao T, Padley P, Poutissou JM, Poutissou R, and Roy J

Published
1991
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9. Search for the decay K+--> pi + gamma gamma.

Author

Atiya MS, Chiang IH, Frank JS, Haggerty JS, Ito MM, Kycia TF, Li KK, Littenberg LS, Stevens AJ, Strand RC, Louis WC, Akerib DS, Marlow DR, Meyers PD, Selen MA, Shoemaker FC, Smith AJ, Azuelos G, Blackmore EW, Bryman DA, Felawka L, Kitching P, Kuno Y, Macdonald JA, Numao T, Padley P, Poutissou JM, Poutissou R, and Roy J

Published
1990
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10. Search for the decay K+--> pi + nu nu -bar.

Author

Atiya MS, Chiang I I, Frank JS, Haggerty JS, Ito MM, Kycia TF, Li KK, Littenberg LS, Stevens A, Strand RC, Louis WC, Akerib DS, Marlow DR, Meyers PD, Selen MA, Shoemaker FC, Smith AJ, Azuelos G, Blackmore EW, Bryman DA, Felawka L, Kitching P, Kuno Y, Macdonald JA, Numao T, Padley P, Poutissou J, Poutissou R, and Roy J

Published
1990
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12. Search for a light Higgs boson in the decay K+--> pi +H, H--> micro+ micro-

Author

Atiya MS, Chiang IH, Frank JS, Haggerty JS, Ito MM, Kycia TF, Li KK, Littenberg LS, Stevens A, Strand RC, Louis WC, Akerib DS, Hildreth M, Marlow DR, Meyers PD, Selen MA, Shoemaker FC, Smith AJ, Azuelos G, Blackmore EW, Bryman DA, Felawka L, Kitching P, Kuno Y, Macdonald JA, Numao T, Padley P, Poutissou JM, Poutissou R, and Roy J

Published
1989
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