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Open AccessJournal ArticleDOI

Measurement of form-factor-independent observables in the decay B0→K*0μ+μ-

Roel Aaij, +656 more
- 04 Nov 2013 - 
- Vol. 111, Iss: 19, pp 191801-191801
TLDR
A measurement of form-factor-independent angular observables in the decay B(0)→K*(892)(0)μ(+)μ(-) is presented, based on a data sample collected by the LHCb experiment in pp collisions at a center-of-mass energy of 7 TeV.
Abstract
We present a measurement of form-factor-independent angular observables in the decay B-0 -> K*(892)(0)mu(+)mu(-). The analysis is based on a data sample corresponding to an integrated luminosity of 1.0 fb(-1), collected by the LHCb experiment in pp collisions at a center-of-mass energy of 7 TeV. Four observables are measured in six bins of the dimuon invariant mass squared q(2) in the range 0.1 < q(2) < 19.0 GeV2/c(4). Agreement with recent theoretical predictions of the standard model is found for 23 of the 24 measurements. A local discrepancy, corresponding to 3.7 Gaussian standard deviations is observed in one q(2) bin for one of the observables. Considering the 24 measurements as independent, the probability to observe such a discrepancy, or larger, in one is 0.5%.

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Citations
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Journal ArticleDOI

LHCb detector performance

Roel Aaij, +703 more
TL;DR: In this paper, the performance of the various LHCb sub-detectors and the trigger system are described, using data taken from 2010 to 2012, and it is shown that the design criteria of the experiment have been met.
Journal ArticleDOI

LHCb Detector Performance

Roel Aaij, +703 more
TL;DR: In this article, the performance of the various LHCb sub-detectors and the trigger system are described, using data taken from 2010 to 2012, and it is shown that the design criteria of the experiment have been met.
Journal ArticleDOI

Angular analysis of the $B^{0}\rightarrow K^{*0}\mu^{+}\mu^{-}$ decay using $3\,\mbox{fb}^{-1}$ of integrated luminosity

Roel Aaij, +731 more
TL;DR: In this paper, an angular analysis of the LHCb collision data is presented, where the angular observables and their correlations are reported in bins of $q^2, the invariant mass squared of the dimuon system.
Journal ArticleDOI

Patterns of New Physics in b → sℓ+ℓ− transitions in the light of recent data

TL;DR: In this article, a global fit to all available b → sl+l− data (l = e, μ) was performed in a model-independent way allowing for different patterns of New Physics.
Journal ArticleDOI

B→Vℓ+ℓ− in the Standard Model from Light-Cone Sum Rules

TL;DR: In this article, the authors presented B → (ρ, ω) ω form factors from light-cone sum rules (LCSR) and provided easy-to-use fits to the LCSR results, including the full error correlation matrix, in all modes at low q petertodd 2 as well as combined fits to LCSR and lattice results covering the entire kinematic range.
References
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Journal ArticleDOI

Classification and regression trees

TL;DR: This article gives an introduction to the subject of classification and regression trees by reviewing some widely available algorithms and comparing their capabilities, strengths, and weakness in two examples.
Journal ArticleDOI

A Decision-Theoretic Generalization of On-Line Learning and an Application to Boosting

TL;DR: The model studied can be interpreted as a broad, abstract extension of the well-studied on-line prediction model to a general decision-theoretic setting, and it is shown that the multiplicative weight-update Littlestone?Warmuth rule can be adapted to this model, yielding bounds that are slightly weaker in some cases, but applicable to a considerably more general class of learning problems.
Journal ArticleDOI

PYTHIA 6.4 Physics and Manual

TL;DR: The Pythia program as mentioned in this paper can be used to generate high-energy-physics ''events'' (i.e. sets of outgoing particles produced in the interactions between two incoming particles).
Journal ArticleDOI

Geant4 developments and applications

TL;DR: GeGeant4 as mentioned in this paper is a software toolkit for the simulation of the passage of particles through matter, it is used by a large number of experiments and projects in a variety of application domains, including high energy physics, astrophysics and space science, medical physics and radiation protection.
Journal ArticleDOI

Unified approach to the classical statistical analysis of small signals

TL;DR: In this article, a classical confidence belt construction is proposed to unify the treatment of upper confidence limits for null results and two-sided confidence intervals for non-null results for Gaussian processes with background and Gaussian errors with a bounded physical region.
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