3,364 research outputs found
The global electroweak fit at NNLO and prospects for the LHC and ILC
For a long time, global fits of the electroweak sector of the Standard Model
(SM) have been used to exploit measurements of electroweak precision
observables at lepton colliders (LEP, SLC), together with measurements at
hadron colliders (Tevatron, LHC), and accurate theoretical predictions at
multi-loop level, to constrain free parameters of the SM, such as the Higgs and
top masses. Today, all fundamental SM parameters entering these fits are
experimentally determined, including information on the Higgs couplings, and
the global fits are used as powerful tools to assess the validity of the theory
and to constrain scenarios for new physics. Future measurements at the Large
Hadron Collider (LHC) and the International Linear Collider (ILC) promise to
improve the experimental precision of key observables used in the fits. This
paper presents updated electroweak fit results using newest NNLO theoretical
predictions, and prospects for the LHC and ILC. The impact of experimental and
theoretical uncertainties is analysed in detail. We compare constraints from
the electroweak fit on the Higgs couplings with direct LHC measurements, and
examine present and future prospects of these constraints using a model with
modified couplings of the Higgs boson to fermions and bosons.Comment: 26 pages, 9 figure
Association of ABCB1, 5-HT3B receptor and CYP2D6 genetic polymorphisms with ondansetron and metoclopramide antiemetic response in Indonesian cancer patients treated with highly emetogenic chemotherapy.
Our study shows that in Indonesian cancer patients treated with highly cytostatic emetogenic, carriership of the CTG haplotype of the ABCB1 gene is related to an increased risk of delayed chemotherapy-induced nausea and vomiting
HistFitter software framework for statistical data analysis
We present a software framework for statistical data analysis, called
HistFitter, that has been used extensively by the ATLAS Collaboration to
analyze big datasets originating from proton-proton collisions at the Large
Hadron Collider at CERN. Since 2012 HistFitter has been the standard
statistical tool in searches for supersymmetric particles performed by ATLAS.
HistFitter is a programmable and flexible framework to build, book-keep, fit,
interpret and present results of data models of nearly arbitrary complexity.
Starting from an object-oriented configuration, defined by users, the framework
builds probability density functions that are automatically fitted to data and
interpreted with statistical tests. A key innovation of HistFitter is its
design, which is rooted in core analysis strategies of particle physics. The
concepts of control, signal and validation regions are woven into its very
fabric. These are progressively treated with statistically rigorous built-in
methods. Being capable of working with multiple data models at once, HistFitter
introduces an additional level of abstraction that allows for easy bookkeeping,
manipulation and testing of large collections of signal hypotheses. Finally,
HistFitter provides a collection of tools to present results with
publication-quality style through a simple command-line interface.Comment: 35 pages (excluding appendix) and 10 figures. Code publicly available
at: http://cern.ch/histfitte
Approximate Homomorphisms of Ternary Semigroups
A mapping between ternary semigroups will be
called a ternary homomorphism if . In this paper,
we prove the generalized Hyers--Ulam--Rassias stability of mappings of
commutative semigroups into Banach spaces. In addition, we establish the
superstability of ternary homomorphisms into Banach algebras endowed with
multiplicative norms.Comment: 10 page
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