| Autor: |
Maciuła, Rafał, Szczurek, Antoni, Zaremba, Jakub, Babiarz, Izabela |
| Zdroj: |
Journal of High Energy Physics; Jan2020, Vol. 2020 Issue 1, p1-27, 27p |
| Abstrakt: |
We discuss how to calculate cross sections as well as rapidity, transverse momentum and energy distributions of ντ and ν ¯ τ produced from the direct D s ± → ν τ / ν ¯ τ and chain D s ± → τ + / τ − → ν τ / ν ¯ τ decays in p+96 Mo scattering with proton beam Elab = 400 GeV i.e. at s NN = 27.4 GeV. The τ decays are simulated with the help of the Tauola code and include multiple decay channels of τ in amounts proportional to their branching ratios. In our calculations we include D s ± from charm fragmentation c → D s + and c ¯ → D s − as well as those from subleading fragmentation of strange quarks/antiquarks s → D s − and s ¯ → D s + . The s ≠ s ¯ asymmetry of the strange quark content of proton is included. The different contributions to D s + and ν τ / ν ¯ τ are shown explicitly. We discuss and quantify a not discussed so far effect of asymmetries for production of ντ and ν ¯ τ caused by subleading fragmentation mechanism and discuss related uncertainties. A potential measurement of the asymmetry is discussed. Estimates of a number of observed ν τ / ν ¯ τ in the ν τ / ν ¯ τ +208Pb reaction, with 2m long target are given with the help of the NuWro program. We refer also to the production of the high-energy (anti)neutrinos in the atmosphere. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
Full text from SpringerLink