Observation of neutral current charm production in ν μ Fe scattering at the Tevatron
نویسندگان
چکیده
We report on the first observation of open charm production in neutral current deep inelastic neutrino scattering as seen in the NuTeV detector at Fermilab. The production rate is shown to be consistent with a pure gluon-Z boson production model, and the observed level of charm production is used to determine the effective charm mass. As part of our analysis, we also obtain a new measurement for the proton-nucleon charm production cross section at √ s = 38.8 GeV.
منابع مشابه
Search for light - to - heavy quark flavor changing neutral currents in ν μ N and ν̄ μ N scattering at the Tevatron
We report on a search for flavor-changing neutral-currents (FCNC) in the production of heavy quarks in deep inelastic νμN and ν̄μN scattering by the NuTeV experiment at the Fermilab Tevatron. This measurement, made possible by the high-purity NuTeV sign-selected beams, probes for FCNC in heavy flavors at the quark level and is uniquely sensitive to neutrino couplings of potential FCNC mediators....
متن کامل0 Electroweak Physics at NuTeV G . P . Zeller for the NuTeV
The NuTeV experiment at Fermilab presents a determination of the elec-troweak mixing angle. High purity, large statistics samples of ν µ N and ν µ N events allow the use of the Paschos-Wolfenstein relation, a technique which considerably reduces systematic errors associated with charm production and other sources. Within the Standard Model, this measurement of sin 2 θ W indirectly determines th...
متن کاملNon Universality of Structure Functions and Measurement of the Strange Sea Density
We show that there is no real conflict between the two determinations of the strange sea density from the opposite–sign dimuon production and from the difference of the F2 structure functions measured in neutrino and muon deep inelastic scattering. Once non universal sea parton densities are introduced, which take into account the effects of different mass thresholds and different longitudinal ...
متن کاملRare Decays of Heavy Flavor at the Tevatron
In this report I review recent results in the field of rare decays at the Tevatron CDF II and DØ experiments. The presentation is focused on rare decays of charm and bottom mesons with two muons in the final state. This includes improvements over the previously available limits on the following branching ratios: B(D+ → π+μ+μ−) < 4.7× 10−6, B(Bs → φ μ+μ−) < 3.2×10−6, B(Bs → μ+μ−) < 1×10−7, and B...
متن کاملDiscriminating between ν μ ↔ ν τ and ν μ ↔ ν sterile in atmospheric ν μ oscillations with the Super – Kamiokande detector
Discriminating between ν µ ↔ ν τ and ν µ ↔ ν sterile in atmospheric ν µ oscillations with the Super–Kamiokande detector. Abstract. A strong body of evidence now exists for atmospheric ν µ disappearance oscillations. Such disappearance could be explained by oscillations to either ν τ or a " sterile " neutrino (ν s). Super–Kamiokande uses three different methods to distinguish between these two s...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2000