6,363 research outputs found
Rare b hadron decays at the LHC
With the completion of Run~I of the CERN Large Hadron Collider, particle
physics has entered a new era. The production of unprecedented numbers of
heavy-flavoured hadrons in high energy proton-proton collisions allows detailed
studies of flavour-changing processes. The increasingly precise measurements
allow to probe the Standard Model with a new level of accuracy. Rare hadron
decays provide some of the most promising approaches for such tests, since
there are several observables which can be cleanly interpreted from a
theoretical viewpoint. In this article, the status and prospects in this field
are reviewed, with a focus on precision measurements and null tests.Comment: Invited review for Annual Reviews of Nuclear and Particle Physics. v2
as publishe
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Making sense of higher education: students as consumers and the value of the university experience
In the global university sector competitive funding models are progressively becoming the norm, and institutions/courses are frequently now subject to the same kind of consumerist pressures typical of a highly marketised environment. In the United Kingdom, for example, students are increasingly demonstrating customer-like behaviour and are now demanding even more âvalueâ from institutions. Value, though, is a slippery concept and has proven problematic both in terms of its conceptualisation and measurement. This article explores the relationship between student value and higher education and, via study in one United Kingdom business school, suggests how this might be better understood and operationalised. Adopting a combined qualitative/quantitative approach, this article also looks to identify which of the key value drivers has most practical meaning and, coincidentally, identifies a value-related difference between home and international students
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The sustainable clothing market: pragmatic strategies for UK fashion retailers
Complexity in parametric Bose-Hubbard Hamiltonians and structural analysis of eigenstates
We consider a family of chaotic Bose-Hubbard Hamiltonians (BHH) parameterized
by the coupling strength between neighboring sites. As increases the
eigenstates undergo changes, reflected in the structure of the Local Density of
States. We analyze these changes, both numerically and analytically, using
perturbative and semiclassical methods. Although our focus is on the quantum
trimer, the presented methodology is applicable for the analysis of longer
lattices as well.Comment: 4 pages, 4 figure
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Public understanding of sustainable clothing: a report to the Department for Environment, Food and Rural Affairs
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Key factors influencing the sustainability impacts of purchase and post-purchase consumer decision-making
A Comparative Study of the Decays in Standard Model and Supersymmetric Theories
Using improved theoretical calculations of the decay form factors in the
Light Cone-QCD sum rule approach, we investigate the decay rates, dilepton
invariant mass spectra and the forward-backward (FB) asymmetry in the decays () in the standard
model (SM) and a number of popular variants of the supersymmetric (SUSY)
models. Theoretical precision on the differential decay rates and FB-asymmetry
is estimated in these theories taking into account various parametric
uncertainties. We show that existing data on and the
experimental upper limit on the branching ratio provide interesting bounds on the coefficients of the underlying
effective theory. We argue that the FB-asymmetry in
constitutes a precision test of the SM and its measurement in forthcoming
experiments may reveal new physics. In particular, the presently allowed
large- solutions in SUGRA models, as well as more general
flavor-violating SUSY models, yield FB-asymmetries which are characteristically
different from the corresponding ones in the SM.Comment: 36 pages, 12 figures (require epsfig.sty), 8 Tables, LaTeX2e;
subsection 6.4 corrected, minor changes in numerical results, Figures 3 and 9
to 12 modified; submitted to Physical Review
Visualizing the Intersection of the Personal and the Social Context - The Use of Multi-layered Chronological Charts in Biographical Studies
This paper outlines the theoretical reasoning and technical implementation of a particular approach to creating multi-layered chronological charts in qualitative biographical studies. The discussed method elucidates the interpretation of traditional life chronologies where the individual\u27s objective life facts are reconstructed free from analysis. The novelty of multi-layered chronological charts lies in their ability to enrich the visualization of a temporal connection between personal and social contextual factors based on categories determined by the researcher. In doing so, such charts make existing interview data more accessible and processable. In-depth, thematic data analysis can be supported through the visualization of prominent life aspects or the presentation of integrative perspectives of individuals\u27 lives. Case examples are presented to demonstrate how methodological and theoretical objectives are fulfilled through the customized use of genealogy software. Based on the underlying research problem, multi-layered biographical charts can be customized for different research purposes and connected to an array of complex linkage systems
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