![Measurement of the K[mu] decay parameters PDF](https://books.google.com/books/content/images/frontcover/6rSJXwAACAAJ?fife=w80-h100)
Author: CERN.Publisher:
ISBN:
Category :
Languages : en
Pages : 36
Book Description
Measurement of the K[mu] decay parameters
Measurement of the K+ mu 3 Decay parameters
Author: Lê DongMeasurement of the Decay Parameter [rho] and a Search for Non-Standard Model Decays in the Muon Decay Spectrum
![Measurement of the Decay Parameter [rho] and a Search for Non-Standard Model Decays in the Muon Decay Spectrum PDF](https://books.google.com/books/content/images/frontcover/hARpnQAACAAJ?fife=w80-h100)
Author: Ryan David BayesPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The study of the muon decay process?+? e+?e??? is a powerful constraint on the behaviour of the weak interaction, without contamination of the other, stronger, fundamental interactions. The spectrum measured from the momentum and angles of the decay positrons is parametrized using a set of four decay parameters. The purpose of the TWIST experiment is to measure these decay parameters to an unprecedented precision; an order of magnitude improvement in the uncertainties over measurements completed before the TWIST experiment. Measurements of the muon decay parameters constrain the values of a series of 19 weak coupling constants. In the standard model, V-A weak interaction, 18 of these constants are 0, while the remaining constant describes interactions between left handed particles, gV_LL= 1. The decay parameter? quantifies the behaviour of the spectrum with respect to momentum. According to the standard model the value of this parameter is 3/4. TWIST measured a value of? = 0.74991?0.00009(stat)?0.00028(sys). The measurement is limited by its systematic uncertainty, so a large focus of the experiment was on the determination and control of these uncertainties. The systematic uncertainties are derived from uncertainties in the detector construction and uncertainties in the biases generated by differences between the data and a matching Monte Carlo. Muon decay also limits the possibility of family symmetry breaking interactions. TWIST can be used to search for the possibility of muons decaying into a positron and a single unidentified neutral particle?+? e+X0 that does not otherwise interact with normal matter. The large momentum and angle acceptance of the TWIST spectrometer allows for searches of two body decays for masses of the X0 boson mX0? [0,80] MeV/c, with a variety of behaviours with respect to the angle of the positron track. Upper limits on massive and mass-less X0 decays are set with a 90% confidence level separately at parts per million for massive decays and parts in 10000 for mass-less decays.
Measurement of the Decay Parameter Rho and a Search for Non-Standard Model Decays in the Muon Decay Spectrum
Author: Ryan David BayesMeasurement of the Branching Ratio and Form Factor Parameters of the Decay KL → M+m-g
Author: A. J. BevanA Precision Measurement of the Muon Decay Parameters Rho and Delta
Author: Robert Paul MacDonaldPublisher:
ISBN:
Category : Muons
Languages : en
Pages : 340
Book Description
Measurement of the Decay Parameter Rho and a Search for Non-Standard Model Decays in the Muon Decay Spectrum
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The study of the muon decay process + e+e is a powerful constraint on the behaviour of the weak interaction, without contamination of the other, stronger, fundamental interactions. The spectrum measured from the momentum and angles of the decay positrons is parametrized using a set of four decay parameters. The purpose of the TWIST experiment is to measure these decay parameters to an unprecedented precision; an order of magnitude improvement in the uncertainties over measurements completed before the TWIST experiment. Measurements of the muon decay parameters constrain the values of a series of 19 weak coupling constants. In the standard model, V-A weak interaction, 18 of these constants are 0, while the remaining constant describes interactions between left handed particles, gV_LL= 1. The decay parameter quantifies the behaviour of the spectrum with respect to momentum. According to the standard model the value of this parameter is 3/4. TWIST measured a value of = 0.749910.00009(stat)0.00028(sys). The measurement is limited by its systematic uncertainty, so a large focus of the experiment was on the determination and control of these uncertainties. The systematic uncertainties are derived from uncertainties in the detector construction and uncertainties in the biases generated by differences between the data and a matching Monte Carlo. Muon decay also limits the possibility of family symmetry breaking interactions. TWIST can be used to search for the possibility of muons decaying into a positron and a single unidentified neutral particle + e+X0 that does not otherwise interact with normal matter. The large momentum and angle acceptance of the TWIST spectrometer allows for searches of two body decays for masses of the X0 boson mX0 [0,80] MeV/c, with a variety of behaviours with respect to the angle of the positron track. Upper limits on massive and mass-less X0 decays are set with a 90% confidence level separately at parts per million for massive decays and parts in.
A Precision Measurement of the Muon Decay Parameter Delta
Author: Andrei GaponenkoPublisher:
ISBN:
Category : Muons
Languages : en
Pages : 202
Book Description
Energy Research Abstracts
Author: Muon Spectroscopy
Author: Stephen J. BlundellPublisher: Oxford University Press
ISBN: 0198858957
Category : Science
Languages : en
Pages : 425
Book Description
Muons, radioactive particles produced in accelerators, have emerged as an important tool to study problems in condensed matter physics and chemistry. Beams of muons with all their spins polarized can be used to investigate a variety of static and dynamic effects and hence to deduce properties concerning magnetism, superconductivity, molecular or chemical dynamics and a large number of other phenomena. The technique was originally the preserve of a few specialists located in particle physics laboratories. Today it is used by scientists from a very wide range of scientific backgrounds and interests. This modern, pedagogic introduction to muon spectroscopy is written with the beginner in the field in mind, but also aims to serve as a reference for more experienced researchers. The key principles are illustrated by numerous practical examples of the application of the technique to different areas of science and there are many worked examples and problems provided to test understanding. The book vividly demonstrates the power of the technique to extract important information in many different scientific contexts, all stemming, ultimately, from the exquisite magnetic sensitivity of the implanted muon spin.