Observation of neutrino induced diffractive Ds*+ production and subsequent decay Ds*+ → Ds+ → τ+ → μ+

P. Annis, S. Aoki, A. Artamonov, E. Barbuto, A. di Bartolomeo, D. Bonekamper, C. Bozza, G. Brooijmans, J. Brunner, A. Bulte, S. Buontempo, A. Capone, F. Cassol, M. G. Catanesi, M. Chikawa, A. Cocco, D. Cussans, N. D'Ambrosio, R. van Dantzig, G. de LellisD. de Pedis, E. di Capua, U. Dore, R. El Aidi, A. Ereditato, D. Favart, R. Ferreira, G. Fiorillo, D. Frekers, J. Goldberg, P. Gorbunov, G. Grégoire, G. Grella, T. Hara, J. Hérin, K. Hoshino, G. Iovane, Y. Ishii, M. de Jong, T. Kawamura, A. Kayis, M. Kazuno, V. Khovansky, K. Kodama, M. Komatsu, J. Konijn, Y. Kotaka, T. Kozaki, M. Litmaath, P. F. Loverre, L. Ludovici, H. Meinhard, O. Melzer, M. Messina, P. Migliozzi, M. Miyanishi, M. T. Muciaccia, K. Nakamura, M. Nakamura, T. Nakano, E. Niu, K. Niu, K. Niwa, Y. Obayashi, S. Ogawa, T. Okusawa, R. G.C. Oldeman, G. Onengut, H. Overas, V. Palladino, J. Panman, I. M. Papadopoulos, I. G. Park, E. Pesen, G. Piredda, C. A.F.J. van der Poel, E. Radicioni, S. Ricciardi, P. Righini, G. Romano, D. Rondeshagen, G. Rosa, D. Saltzberg, B. Saitta, R. Santacesaria, O. Sato, Y. Sato, A. Satta, V. Shamanov, H. Shibuya, S. Simone, J. S. Song, S. Sorrentino, P. Strolin, I. Tezuka, V. Tioukov, P. Tolun, T. Toshito, R. Tsenov, J. W.E. Uiterwijk, N. Ushida, M. Vander Donckt, B. van de Vyver, P. Vilain, J. L. Visschers, L. Vivolo, Ch Weinheimer, G. Wilquet, K. Winter, T. Wolff, H. Wong, C. S. Yoon, M. T. Zeyrek, P. Zucchelli

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20 Citations (Scopus)

Abstract

We report on the first direct observation of a neutrino induced charged-current interaction with two subsequent decays of short-lived particles close to the interaction vertex. This rare double-kink signature in the CHORUS emulsion target is interpreted as a Ds*+ production followed by the decay chain Ds*+ → Ds+ γ, Ds+ → τ+ vτ, τ+ → μ+ vμ vτ̄. The event is characterised by small Q2 and small four-momentum transfer squared t to the target nucleon, which indicates a diffractive production mechanism. A complete analysis of the event is presented.

Original languageEnglish
Pages (from-to)458-464
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume435
Issue number3-4
DOIs
Publication statusPublished - 1998 Sep 10

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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