Observation of neutrino induced diffractive D-s*(+) production and subsequent decay D-s*(+)-> D-s(+)->tau(+)->mu(+)


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Annis P., Aoki S., Artamonov A., Barbuto E., di Bartolomeo A., Bonekamper D., ...Daha Fazla

PHYSICS LETTERS B, cilt.435, ss.458-464, 1998 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 435
  • Basım Tarihi: 1998
  • Doi Numarası: 10.1016/s0370-2693(98)00914-9
  • Dergi Adı: PHYSICS LETTERS B
  • Sayfa Sayıları: ss.458-464

Özet

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 D-s*(+) production followed by the decay chain D-s*(+) --> D-s(+) gamma, D-s(+) --> tau(+) v(tau),tau(+) --> mu(+) v(mu)v(tau). The event is characterised by small Q(2) 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. (C) 1998 Elsevier Science B.V. All rights reserved.