Studying [b to S Gamma] at BaBar Using a Fully Inclusive Method
Author : Ruth Elisabeth Schmitz
Publisher :
Page : 538 pages
File Size : 16,33 MB
Release : 2003
Category : Particles (Nuclear physics)
ISBN :
Author : Ruth Elisabeth Schmitz
Publisher :
Page : 538 pages
File Size : 16,33 MB
Release : 2003
Category : Particles (Nuclear physics)
ISBN :
Author :
Publisher :
Page : pages
File Size : 49,38 MB
Release : 2004
Category :
ISBN :
The b [yields] s[gamma] decay represents a possible electromagnetic ''loop'' penguin decay of the B meson. This FCNC process is of high theoretical interest because various scenarios of new physics are expected to have contributions at the same (one loop) level as the Standard Model. The large sample of B[bar B] meson decays collected by the BaBar experiment makes a precision measurement of this rare decay possible. In conjunction with Standard Model predictions at the 10% level, it brings new physics effects into the realm of detection--or seriously constrains models that could predict them. A fully inclusive technique is presented to study the b [yields] s[gamma] transition as a function of photon energy, using 88.5 [+-] 1.0 x 10[sup 6] B[bar B] meson decays collected by the BaBar experiment in the years 2000 to 2002. The expected statistical and systematic uncertainties have been fully determined which enables first comparisons with theoretical predictions and other experimental results. It also lays the basis for the determination of the inclusive branching fraction [Beta](B [yields] X[sub s][gamma]) and the measurement of the photon energy spectrum.
Author : Teela Maria Pulliam
Publisher :
Page : 0 pages
File Size : 13,78 MB
Release : 2002
Category : Nuclear physics
ISBN :
Author : Ruth Elizabeth Schmitz
Publisher :
Page : 247 pages
File Size : 47,15 MB
Release :
Category : Mesons
ISBN :
Author :
Publisher :
Page : pages
File Size : 22,1 MB
Release : 2004
Category :
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The electromagnetic penguin process b [yields] s[gamma] is very interesting to theorists because it can be used to constrain contributions from new physics that could enter at the one loop level. The high statistics of B[bar B] events collected at the BABAR experiment make a measurement of this rare decay possible. The branching fraction of a sum of exclusive b [yields] s[gamma] decay modes is measured as a function of the strange hadronic mass. This is a large step toward the measurement of the b [yields] s[gamma] rate.
Author : Fred Jegerlehner
Publisher : Springer Science & Business Media
Page : 433 pages
File Size : 17,5 MB
Release : 2008
Category : Science
ISBN : 3540726330
This book reviews the present state of knowledge of the anomalous magnetic moment a=(g-2)/2 of the muon. The muon anomalous magnetic moment is one of the most precisely measured quantities in elementary particle physics and provides one of the most stringent tests of relativistic quantum field theory as a fundamental theoretical framework. It allows for an extremely precise check of the standard model of elementary particles and of its limitations.
Author : Aneesh V. Manohar
Publisher : Cambridge University Press
Page : 205 pages
File Size : 25,66 MB
Release : 2023-07-31
Category : Science
ISBN : 1009402145
Author : Sheldon Stone
Publisher : World Scientific
Page : 676 pages
File Size : 12,13 MB
Release : 1994
Category : Science
ISBN : 9789810218362
This 2nd edition is an extensive update of "B Decays?. The revisions are necessary because of the extensive amount of new data and new theoretical ideas. This book reviews what is known about b-quark decays and also looks at what can be learned in the future.The importance of this research area is increasing, as evidenced by the approval of the luminosity upgrade for CESR and the asymmetric B factories at SLAC and KEK, and the possibility of experiments at hadron colliders.The key experimental observations made thus far, measurement of the lifetimes of the different B species, B0-B0 mixing, the discovery of ?Penguin? mediated decays, and the extraction of the CKM matrix elements Vub and Vcb from semileptonic decays, as well as more mundane results, are described in great detail by the experimentalists who have been closely involved with making the measurements. Theoretical progress in understanding b-quark decays using HQET and lattice gauge techniques are described by theorists who have developed and used these techniques.Synthesizing the experimental and theoretical information, several articles discuss the implications for the ?Standard Model? and how further tests can be done using measurements of CP violation in the B system.
Author : Christian W. Fabjan
Publisher : Springer Nature
Page : 1083 pages
File Size : 15,19 MB
Release : 2020
Category : Elementary particles (Physics).
ISBN : 3030353184
This second open access volume of the handbook series deals with detectors, large experimental facilities and data handling, both for accelerator and non-accelerator based experiments. It also covers applications in medicine and life sciences. A joint CERN-Springer initiative, the "Particle Physics Reference Library" provides revised and updated contributions based on previously published material in the well-known Landolt-Boernstein series on particle physics, accelerators and detectors (volumes 21A, B1,B2,C), which took stock of the field approximately one decade ago. Central to this new initiative is publication under full open access
Author : Toyoko Jennifer Orimoto
Publisher :
Page : 476 pages
File Size : 26,15 MB
Release : 2006
Category :
ISBN :