2,043 research outputs found
Recent B Physics Results from the Tevatron
We review recent B physics results from the CDF and Dzero experiments in
p-pbar collisions at sqrt(s) = 1.96 TeV. Using a data sample of 1.4-6.0 fb-1
collected by the CDF II detector we present searches for New Physics in Bs
sector and some competitive results with B-factories in the B/charm sector. In
the first category we report the BR in Bs -> J/psi f0(980) decays and the
time-integrated mixing probability chi-bar of B mesons. In the second category
BR and Acp in doubly Cabibbo-suppressed B+- -> D0 h+- decays and
time-integrated CP violation in D0 -> h+ h- are presented.Comment: To appear in the proceeding of Rencontres de Moriond, QCD and High
Energy Interactions, La Thuile, March 20-27, 2011. 6 page
First event-by-event fluctuation studies in Pb-Pb collisions at LHC energy by the ALICE experiment
The presence of the phase transition can manifest itself by the
characteristic behavior of several observables which may vary dramatically from
one event to the other. Thus, the study of various conserved quantities on an
event-by-event basis offers the possibility to study the phase transition and
the nature of high density matter. The ALICE experiment is well suited for
precise event-by-event measurements of various quantities. In this article, the
event-by-event fluctuations of mean transverse momentum and net-charge
distributions as measured by the ALICE experiment are presented
De-leveraging and the financial accelerator: how Wall Street can shock main street
The severity of the recent economic downturn raises questions about the role of financial markets in modern market economies. Why did rising defaults in a relatively small portion of the U.S. housing market cause a financial crisis? Why do financial crises have outsized adverse effects on the rest of the economy? As a general rule, a decline in economic activity in the nonfinancial sector, such as occurs during a typical recession, induces greater restraint on the part of the financial sector and that restraint - manifested usually in a pullback of credit and funding - in turn causes further setbacks to the nonfinancial sector. In the academic literature, this feedback effect is called the financial accelerator. In "De-Leveraging and the Financial Accelerator: How Wall Street Can Shock Main Street," Satyajit Chatterjee looks at what underlay the financial shock that emanated from Wall Street in the fall of 2007. Then he focuses on the channels through which the financial accelerator works and how the accelerator can turn a financial market disruption into a deep recession.Financial crises ; Recessions
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