Yayın: Precision measurement of the mass of the τ lepton
Dosyalar
Tarih
Kurum Yazarları
Yazarlar
Ablikim, M.
Achasov, M. N.
Ai, X. C.
Albayrak, O.
Albrecht, M.
Ambrose, D. J.
An, F. F.
An, Q.
Bai, J. Z.
Ferroli, R. Baldini
Danışman
Dil
Türü
Yayıncı:
Amer Physical
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Özet
An energy scan near the tau pair production threshold has been performed using the BESIII detector. About 24 pb(-1) of data, distributed over four scan points, were collected. This analysis is based on t pair decays to ee, e mu, eh, h, hh, e.,. and p. final states, where h denotes a charged p or K. The mass of the t lepton is measured from a maximum likelihood fit to the t pair production cross- section data to be m(tau) = 1776.91 +/- 0.12_0.10 - 0.13 _ MeV/c(2), which is currently the most precise value in a single measurement.
Açıklama
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Anahtar Kelimeler:
Konusu
Radiative-corrections, Astronomy & astrophysics, Physics