14,423 research outputs found
A Note on Poverty in Kosovo
Kosovo is a war-torn corner of the former Yugoslavia, where a civil war between ethnic Albanians and ethnic Serbs raged during most of the 1990s. We examine the incidence and depth of poverty and some of its correlates in post-conflict Kosovo using the Living Standards Measurement Survey.http://deepblue.lib.umich.edu/bitstream/2027.42/40193/3/wp807.pd
Gender and Ethnicity in Post-Conflict Kosovo
The paper examines the comparative economic wellbeing of female- and male-headed households among Serbs and Albanians in post-conflict Kosovo. Evidence from the living standards measurement study (LSMS) household survey, 2001, shows that Serb households, both those headed by women and men, are worse off than Albanians households. We find that female-headed households do not generally suffer more than male-headed households, but there is substantial variation among ethnic groups. While Albanian female-headed households are marginally better-off than Albanian male-headed households, Serb female-headed households have the lowest standard of living.consumption, ethnicity, gender
B's with Direct Decays: Tevatron and LHC Discovery Prospects in the b\bar{b}+MET Channel
We explore the discovery prospects for B'\bar{B}' pair production followed by
direct decays B'->bX, where B' is a new quark and X is a long-lived neutral
particle. We develop optimized cuts in the (m_B', m_X) plane and show that the
7 TeV LHC with an integrated luminosity of 1 (10) fb^-1 may exclude masses up
to m_B' ~ 620 (800) GeV, completely covering the mass range allowed for new
quarks that get mass from electroweak symmetry breaking. This analysis is
applicable to other models with b\bar{b}+MET signals, including supersymmetric
models with bottom squarks decaying directly to neutralinos, and models with
exotic quarks decaying directly to GeV-scale dark matter. To accommodate these
and other interpretations, we also present model-independent results for the
b\bar{b}+MET cross section required for exclusion and discovery.Comment: 18 pages; v2: published versio
A Note on Poverty in Kosovo
Kosovo is a war-torn corner of the former Yugoslavia, where a civil war between ethnic Albanians and ethnic Serbs raged during most of the 1990s. We examine the incidence and depth of poverty and some of its correlates in post-conflict Kosovo using the Living Standards Measurement Survey.poverty, ethnicity, transition
Sharp Contradiction for Local-Hidden-State Model in Quantum Steering
In quantum theory, no-go theorems are important as they rule out the
existence of a particular physical model under consideration. For instance, the
Greenberger-Horne-Zeilinger (GHZ) theorem serves as a no-go theorem for the
nonexistence of local hidden variable models by presenting a full contradiction
for the multipartite GHZ states. However, the elegant GHZ argument for Bell's
nonlocality does not go through for bipartite Einstein-Podolsky-Rosen (EPR)
state. Recent study on quantum nonlocality has shown that the more precise
description of EPR's original scenario is "steering", i.e., the nonexistence of
local hidden state models. Here, we present a simple GHZ-like contradiction for
any bipartite pure entangled state, thus proving a no-go theorem for the
nonexistence of local hidden state models in the EPR paradox. This also
indicates that the very simple steering paradox presented here is indeed the
closest form to the original spirit of the EPR paradox.Comment: 9 pages. Revised version for Scientific Report
Dark Matter-Motivated Searches for Exotic 4th Generation Quarks in Tevatron and Early LHC Data
We determine the prospects for finding dark matter at the Tevatron and LHC
through the production of exotic 4th generation quarks T' that decay through T'
\to t X, where X is dark matter. The resulting signal of t \bar{t} + \met has
not previously been considered in searches for 4th generation quarks, but there
are both general and specific dark matter motivations for this signal, and with
slight modifications, this analysis applies to any scenario where invisible
particles are produced in association with top quarks. Current direct and
indirect bounds on such exotic quarks restrict their masses to be between 300
and 600 GeV, and the dark matter's mass may be anywhere below m_T'. We simulate
the signal and main backgrounds with MadGraph/MadEvent-Pythia-PGS4. For the
Tevatron, we find that an integrated luminosity of 20 fb^-1 will allow 3\sigma
discovery up to m_T' = 400 GeV and 95% exclusion up to m_T' = 455 GeV. For the
10 TeV LHC with 300 pb^-1, the discovery and exclusion sensitivities rise to
490 GeV and 600 GeV. These scenarios are therefore among the most promising for
dark matter at colliders. Perhaps most interestingly, we find that dark matter
models that can explain results from the DAMA, CDMS and CoGeNT Collaborations
can be tested with high statistical significance using data already collected
at the Tevatron and have extraordinarily promising implications for early runs
of the LHC.Comment: 22 pages; v2: additional discussion of relation to DAMA, CDMS, and
CoGeNT results, references adde
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