| Autor: |
V. Jain, F. A. Harris, M. Aderholz, M. M. Aggarwal, H. Akbari, P. P. Allport, P. V. K. S. Baba, S. K. Badyal, M. Barth, J. P. Baton, H. H. Bingham, E. B. Brucker, R. A. Burnstein, J. R. Campbell, R. J. Cence, T. K. Chatterjee, E. F. Clayton, G. Corrigan, C. Coutures, D. Deprospo, null Devanand, E. De Wolf, P. J. W. Faulkner, W. B. Fretter, V. K. Gupta, J. Guy, J. Hanlon, G. G. Harigel, M. A. Jabiol, P. Jacques, G. T. Jones, M. D. Jones, T. Kafka, M. Kalelkar, P. Kasper, G. L. Kaul, M. Kaur, J. M. Kohli, E. L. Koller, R. J. Krawiec, M. Lauko, J. Lys, P. Marage, R. H. Milburn, D. B. Miller, I. S. Mittra, M. M. Mobayyen, J. Moreels, D. R. O. Morrison, G. Myatt, P. Nailor, R. Naon, A. Napier, M. Neveu, D. Passmore, M. W. Peters, V. Z. Peterson, R. Plano, N. K. Rao, H. A. Rubin, J. Sacton, B. Saitta, P. Schmid, N. Schmitz, J. Schneps, R. Sekulin, S. Sewell, J. B. Singh, P. M. Sood, W. Smart, P. Stamer, K. E. Varvell, W. Venus, L. Verluyten, L. Voyvodic, H. Wachsmuth, S. Wainstein, S. Willocq, G. P. Yost |
| Rok vydání: |
1990 |
| Předmět: |
|
| Zdroj: |
Physical review. D, Particles and fields. 41(7) |
| ISSN: |
0556-2821 |
| Popis: |
The Fermilab 15-ft bubble chamber has been exposed to a quadrupole triplet neutrino beam produced at the Tevatron. The ratio of {nu} to {bar {nu}} in the beam is approximately 2.5. The mean event energy for {nu}-induced charged-current events is 150 GeV, and for {bar {nu}}-induced charged-current events it is 110 GeV. A total of 64 dimuon candidates (1 {mu}{sup +}{mu}{sup +}, 52 {mu}{sup {minus}}{mu}{sup +} and {mu}{sup +}{mu}{sup {minus}}, and 11 {mu}{sup {minus}}{mu}{sup {minus}}) is observed in the data sample of approximately 13 300 charged-current events. The number and properties of the {mu}{sup {minus}}{mu}{sup {minus}} and {mu}{sup +}{mu}{sup +} candidates are consistent with their being produced by background processes, the important sources being {pi} and {ital K} decay and punchthrough. The 90%-C.L. upper limit for {mu}{sup {minus}}{mu}{sup {minus}}/{mu}{sup {minus}} for muon momenta above 4 GeV/{ital c} is 1.2{times}10{sup {minus}3}, and for momenta above 9 GeV/{ital c} this limit is 1.1{times}10{sup {minus}3}. The opposite-sign-dimuon--to--single-muon ratio is (0.62{plus minus}0.13)% for muon momenta above 4 GeV/{ital c}. There are eight neutral strange particles in the opposite-sign sample, leading to a rate per dimuon event of 0.65{plus minus}0.29. The opposite-sign-dimuon sample is consistent with the hypothesis of charm production and decay. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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