Measurement Of The Radiative Decay Branching Fraction In The Meg Experiment PDF Download
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Author | : Feng Xiao |
Publisher | : |
Total Pages | : 254 |
Release | : 2010 |
Genre | : |
ISBN | : 9781124194929 |
Download Measurement of the Radiative Decay Branching Fraction in the MEG Experiment Book in PDF, ePub and Kindle
A measurement of the radiative muon decay [mu] --> e v e̳ v [m̳u̳] [gamma] branching fraction was done on the basis of the radiative decay data of MEG experiment. The data were taken periodically one day per week with the beam intensity of 1.2x106 [mu] + / s from September to December, 2008. The positron was measured by a spectrometer with gradient magnetic field. The photon was detected by an innovative ̃900 liter liquid xenon scintillation detector. The measurement was carried out with a cut-and-count approach. We report the radiative muon decay branching fraction to be B([mu] --> e vv̄ [gamma]) = (2.84 ± 0.20(stat) ± 0.05(syst))x10−7, with Ee̳> 46 MeV, E [gamma]> 30 MeV, and the opening angle between the two particles [theta] e̳ [gamma] in its full kinematic range. Distributions of three observables, E e̳, E [gamma], and [theta] e̳ [gamma], as well as their kinematic correlations were verified to be consistent with the radiative decays. The measurement is in excellent agreement with the prediction of the Standard Model.
Author | : Lorenzo Bianchini |
Publisher | : Springer |
Total Pages | : 374 |
Release | : 2017-11-25 |
Genre | : Science |
ISBN | : 331970494X |
Download Selected Exercises in Particle and Nuclear Physics Book in PDF, ePub and Kindle
This book presents more than 300 exercises, with guided solutions, on topics that span both the experimental and the theoretical aspects of particle physics. The exercises are organized by subject, covering kinematics, interactions of particles with matter, particle detectors, hadrons and resonances, electroweak interactions and flavor physics, statistics and data analysis, and accelerators and beam dynamics. Some 200 of the exercises, including 50 in multiple-choice format, derive from exams set by the Italian National Institute for Nuclear Research (INFN) over the past decade to select its scientific staff of experimental researchers. The remainder comprise problems taken from the undergraduate classes at ETH Zurich or inspired by classic textbooks. Whenever appropriate, in-depth information is provided on the source of the problem, and readers will also benefit from the inclusion of bibliographic details and short dissertations on particular topics. This book is an ideal complement to textbooks on experimental and theoretical particle physics and will enable students to evaluate their knowledge and preparedness for exams.
Author | : Andrzej J. Buras |
Publisher | : Cambridge University Press |
Total Pages | : 739 |
Release | : 2020-07-02 |
Genre | : Science |
ISBN | : 1107034035 |
Download Gauge Theory of Weak Decays Book in PDF, ePub and Kindle
"The ultimate question of elementary particle physics is: What is the fundamental Lagrangian of nature surrounding us? The Lagrangian of the SM is very successful in describing nature at the currently available energy range. The discovery of the Higgs boson completed the particle spectrum of the SM and it is another proof of how well the SM works. Nevertheless the SM cannot be the end of the story and it is for sure not the fundamental Lagrangian of nature. The Lagrangian of the SM looses its validity at the latest at the Planck scale where gravitational effects become noticeable.Most physicists think of the SM as an effective theory that has to be replaced by a more fundamental theory above the TeV scale. What the word effective really means will hopefully be clear at later stages of our book. For the time being we will list some problems and open questions of the SM"--
Author | : |
Publisher | : |
Total Pages | : 8 |
Release | : 2008 |
Genre | : |
ISBN | : |
Download Measurement of Branching Fractions of Radiative Charm Decays Book in PDF, ePub and Kindle
We present a measurement of the branching fractions for the Cabibbo-favored radiative decay, D° → {bar K}*°?, and the Cabibbo-suppressed radiative decay, D° →??. These measurements are based on a data sample corresponding to an integrated luminosity of 387.1 fb−1, recorded with the BABAR detector at the PEP-II ee− asymmetric-energy collider operating at center-of-mass energies 10.58 and 10.54 GeV. We measure the branching fractions relative to the well-studied decay D° → K−?+ and find?(D° → {bar K}*°?)/?(D° → K−?+) = (8.43 ± 0.51 ± 0.70) x 10−3 and?(D° →??)/?(D° → K−?+) = (7.15 ± 0.78 ± 0.69) x 10−4, where the first error is statistical and the second is systematic. This is the first measurement of?(D° → {bar K}*°?).
Author | : K. Koeneke |
Publisher | : |
Total Pages | : |
Release | : 2006 |
Genre | : |
ISBN | : |
Download Measurement of the Branching Fraction for the DecayB^{\pm} to K^{*\pm} Gamma, K^{*\pm} ToK^{\pm} \pi^{0} with the BaBar Detector Book in PDF, ePub and Kindle
The branching fraction of the radiative penguin B meson decay B{sup {+-}} {yields} K*{sup {+-}}{gamma} is measured at the PEP-II asymmetric energy e{sup +}e{sup -} collider, operating at a center of momentum energy of 10.58 GeV, the {Upsilon}(4S) resonance. This document concentrates on the case K*{sup {+-}} {yields} K{sup {+-}}{pi}{sup 0}; {pi}{sup 0} {yields} {gamma}{gamma}. This analysis is based on a dataset of 88.2-million {Upsilon}(4S) {yields} B{bar B} events corresponding to 81.3 fb{sup -1} collected with the BABAR detector.
Author | : Hans Volker Klapdor-kleingrothaus |
Publisher | : World Scientific |
Total Pages | : 774 |
Release | : 2011-03-23 |
Genre | : Science |
ISBN | : 9814460753 |
Download Physics Beyond The Standard Models Of Particles, Cosmology And Astrophysics - Proceedings Of The Fifth International Conference - Beyond 2010 Book in PDF, ePub and Kindle
This book contains the proceedings of the Fifth International Conference on Physics Beyond the Standard Models of Particle Physics, Cosmology and Astrophysics. It presents a brilliant overview of the status and future potential and trends in experimental and theoretical particle physics, cosmology and astrophysics, in the complimentary sectors of accelerator, non-accelerator and space physics.
Author | : A. T. Wood |
Publisher | : |
Total Pages | : 0 |
Release | : 1984 |
Genre | : |
ISBN | : |
Download A Measurement of the Branching Ratio for the Radiative Decay of the Sigma and Hyperon Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 10 |
Release | : 2003 |
Genre | : |
ISBN | : |
Download Measurement of the Branching Fraction and Polarization for the Decay B- ---] D*0K*- Book in PDF, ePub and Kindle
Author | : Sang-Joon Lee |
Publisher | : |
Total Pages | : 336 |
Release | : 2001 |
Genre | : |
ISBN | : |
Download A Measurement of the Branching Fraction of the Semileptonic Decay from the D+ Meson to the K̄(892)*° Meson Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 7 |
Release | : 2003 |
Genre | : |
ISBN | : |
Download Measurement of the Branching Fraction and Polarization for the Decay B− 2!D*° K*− Book in PDF, ePub and Kindle
The authors present a study of the decay B− → D*° K*− based on a sample of 86 million [Upsilon](4S) → B{bar B} decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factor at SLAC. The authors measure the branching fraction [Beta](B− → D*° K*−) = (8.3 ± 1.1(stat) ± 1.0(syst)) x 10−4, and the fraction of longitudinal polarization in this decay to be [Lambda]{sub L}/[Lambda] = 0.86 ± 0.06(stat) ± 0.03(syst).