Search For B Mu Anti Muon Neutrino Gamma And B E Anti Electron Neutrino Gamma PDF Download

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Search for B --] Mu Anti-muon-neutrino Gamma and B --] E Anti-electron-neutrino Gamma

Search for B --] Mu Anti-muon-neutrino Gamma and B --] E Anti-electron-neutrino Gamma
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Release: 2003
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ISBN:

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We have searched for the decays B[yields][mu][bar[nu]][sub[mu]][gamma] and B[yields] e[bar[nu]][sub e][gamma] in a sample of 2.7 million charged B decays collected with the CLEO II detector. In the muon channel, we observe no candidates in the signal region and set an upper limit on the branching fraction of[Beta](B[yields][mu][bar[nu]][sub[mu]][gamma])


Search for B --] Mu Anti-muon-neutrino Gamma and B --] E Anti-electron-neutrino Gamma

Search for B --] Mu Anti-muon-neutrino Gamma and B --] E Anti-electron-neutrino Gamma
Author: Colin P. Jessop
Publisher:
Total Pages: 12
Release: 2003
Genre:
ISBN:

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We have searched for the decays B {yields} {mu}{bar {nu}}{sub {mu}}{gamma} and B {yields} e{bar {nu}}{sub e}{gamma} in a sample of 2.7 million charged B decays collected with the CLEO II detector. In the muon channel, we observe no candidates in the signal region and set an upper limit on the branching fraction of {Beta}(B {yields} {mu}{bar {nu}}{sub {mu}}{gamma})


High Energy Neutrinos from Gamma Ray Bursts: Theoretical Predictions, Experimental Searches, and Prospects for Detection

High Energy Neutrinos from Gamma Ray Bursts: Theoretical Predictions, Experimental Searches, and Prospects for Detection
Author: Oindree Banerjee
Publisher: Oindree Banerjee
Total Pages: 41
Release: 2020-10-23
Genre: Science
ISBN:

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Abstract Gamma-ray bursts (GRBs) are the most luminous transient events in the observed Universe. However, there is no direct observational evidence for what exactly drives a GRB. The most widely accepted model for these cosmic events is the fireball model where it is thought that a substantial fraction of the kinetic energy of the source is converted to gamma-radiation by shock accelerated electrons emitting synchrotron and inverse-Compton radiation. The acceleration of protons in the gamma-ray emitting region of the GRB has been hypothesized as well. In this hadronic acceleration model, it is predicted that protons may interact with gamma-ray photons to produce a burst of neutrinos at energy ∼10^14 eV during prompt emission and energy ∼10^18 eV during afterglow emission. Several experimental searches for these high energy neutrinos have been conducted and no GRB neutrinos have yet been found. The analytical prediction for neutrino flux has been replaced with a more thorough numerical prediction for neutrino flux. The neutron model of GRBs, where only neutrons can escape the GRB and reach Earth as cosmic rays, has been ruled out by the experimental work of IceCube and ANTARES. Upgraded versions of current experiments such as IceCube, ANTARES, ANITA and ARA, as well as new experiments such as KM3NeT, are preparing to probe and further constrain the fireball paradigm of GRB neutrino production. This review includes: Introduction Early theoretical predictions for neutrino fluences due to GRBs Overview of high energy neutrino experiments and related physics Experimental searches for high energy neutrinos from GRBs Prospects for detection of high energy neutrinos from GRBs High Energy Neutrinos from Gamma Ray Bursts: Theoretical Predictions, Experimental Searches, and Prospects for Detection was originally written as a review submitted for my Ph.D. candidacy paper on Nov 23, 2015. It has been edited for a "Short Read" on Amazon Kindle Direct Publishing in Oct 2020. It is a public domain work. Special thanks to the Connolly group at Ohio State University (OSU) and the physics and astronomy departments at OSU. Moreover, I am grateful for the contribution of each and every scientist and author listed in the "References" section of this review. This review would not be possible without their published science and hard work. Please let me know if you find any mistakes or problems, I will fix it. My email is [email protected]. I am happy for this to be a living document. I am anxious to improve it but feel that it needs to be out at this point before that can happen.


High Energy Physics Index

High Energy Physics Index
Author:
Publisher:
Total Pages: 716
Release: 1990
Genre: Nuclear physics
ISBN:

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Search for the Neutrinoless Muon Decay. Mu. . --]. E. Gamma

Search for the Neutrinoless Muon Decay. Mu. . --]. E. Gamma
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Release: 1985
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ISBN:

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Separate muon, electron, and tau numbers are conserved in the minimal standard model of electroweak interactions with massless neutrinos. However, in many extensions to the standard model, separate lepton numbers are not expected to be conserved quantities. A new search for muon number non-conserving processes has been undertaken at the Los Alamos Meson Physics Facility (LAMPF), specifically to look for three neutrinoless decay modes of the muon. The search for the decay of a muon to an electron and a photon is discussed here. A new detector facility, located in the LAMPF stopped muon channel, was developed for this experiment. This Crystal Box detector consists of a cylindrical drift chamber surrounded by a plastic scintillator hodoscope and a large solid angle, modularized, NaI(Tl) calorimeter. The apparatus measures the trajectories, relative timing, and energies of charged particles and photons from the decays of positive muons stopped in a central target. The assembly and calibration of the detector are described, and the procedure for taking data is discussed. The sample of 1.3 million candidate events, from the first data run of the Crystal Box, was analyzed using a maximum-likelihood method. The upper limit on the branching ratio, relative to normal muon decay, for a muon decaying to an electron and a photon is found to be consistent with previous measurements. With 90% confidence, the branching ratio for this neutrinoless decay is observed to be less than 2.8 x 101°.


The Search for the Neutrino

The Search for the Neutrino
Author: A. W. Wolfendale
Publisher:
Total Pages: 30
Release: 1971
Genre: Science
ISBN:

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