113,560 research outputs found
D0D0bar Quantum Correlations, Mixing, and Strong Phases
Due to the presence of the quantum correlation between the pair-produced D0
and D0bar from the decay of the psi(3770), the time-integrated single and
double tag decay rates depend on charm mixing amplitudes,
doubly-Cabibbo-suppressed amplitudes, and the relative strong phase, delta,
between D0 and D0bar decays to identical final states. Using 281 pb^-1 of
integrated luminosity collected with the CLEO-c detector on the psi(3770)
resonance, we measure the absolute branching fractions of D0 decays to K-pi+,
CP eigenstates, and semileptonic final states to determine cos(delta) for K-pi+
and to limit the mixing amplitude y.Comment: 3 pages, to appear in the Proceedings of PANIC'05 (Particles and
Nuclei International Conference), Santa Fe, NM, October 24-28 200
Reconstructed Jets at RHIC
To precisely measure jets over a large background such as pile up in high
luminosity p+p collisions at LHC, a new generation of jet reconstruction
algorithms is developed. These algorithms are also applicable to reconstruct
jets in the heavy ion environment where large event multiplicities are
produced. Energy loss in the medium created in heavy ion collisions are already
observed indirectly via inclusive hadron distributions and di-hadron
correlations. Jets can be used to study this energy loss in detail with reduced
biases. We review the latest results on jet-medium interactions as seen in A+A
collisions at RHIC, focusing on the recent progress on jet reconstruction in
heavy ion collisions.Comment: Proceedings for the 26th Winter Workshop on Nuclear Dynamic
The Antares Neutrino Telescope and Multi-Messenger Astronomy
Antares is currently the largest neutrino telescope operating in the Northern
Hemisphere, aiming at the detection of high-energy neutrinos from astrophysical
sources. Such observations would provide important clues about the processes at
work in those sources, and possibly help solve the puzzle of ultra-high energy
cosmic rays. In this context, Antares is developing several programs to improve
its capabilities of revealing possible spatial and/or temporal correlations of
neutrinos with other cosmic messengers: photons, cosmic rays and gravitational
waves. The neutrino telescope and its most recent results are presented,
together with these multi-messenger programs.Comment: 10 pages, 7 figures. Proceedings of the 14th Gravitational Wave Data
Analysis Workshop (GWDAW-14) in Roma - January 26th-29th, 201
Zika virus: New clinical syndromes and its emergence in the western hemisphere
Zika virus (ZIKV) had remained a relatively obscure flavivirus until a recent series of outbreaks accompanied by unexpectedly severe clinical complications brought this virus into the spotlight as causing an infection of global public health concern. In this review, we discuss the history and epidemiology of ZIKV infection, recent outbreaks in Oceania and the emergence of ZIKV in the Western Hemisphere, newly ascribed complications of ZIKV infection, including Guillain-Barré syndrome and microcephaly, potential interactions between ZIKV and dengue virus, and the prospects for the development of antiviral agents and vaccines
Particle Production at the SPS and the QCD Phase Diagram
Recent results of particle production in the energy regime of the CERN-SPS
are reviewed. In order to collect information on the properties of the QCD
phase diagram systematic studies of the system size and the energy dependence
of particle production in heavy ion collisions have been performed. Net-baryon
distributions and results on strangeness production are discussed. The system
size dependence of many observables can be understood in the core-corona
approach, which has implications on the possibility to use system size as a
control parameter to study different areas of the phase diagram. Recent
attempts to search for a critical point, such as multiplicity fluctuations and
the transverse mass dependence of anti-baryon/baryon ratios are reviewed.Comment: Proccedings of 26th Winter Workshop on Nuclear Dynamics, 9 pages, 7
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