نتایج جستجو برای: muon density

تعداد نتایج: 417332  

2001
Ailin Zhang

Based on the bound state description of muon and general relativistic covariant quantum field theory, we illustrate with a simple composite model that the observed deviation of (g − 2)μ can be a demonstration of the substructure of muon and give a constraint on the radius of muon in a light constituent model or the masses of constituents in a heavy constituent model. PACS number: 11.10.-z; 11.1...

Journal: :Acta chimica Slovenica 2011
Robert Blinc Gojmir Lahajnar Anton Potočnik

Muon spin rotation (µSR) and relaxation has been used to study the local magnetic structure of K3Fe5F15. A collinear F-µ+-F "hydrogen bond-like" symmetric double minimum type complex with a F...F distance of 2.8 Å and a separation between the two minima of 0.8 Å has been found in the paramagnetic phase. The apparent central position of the muon seems to be the result of fast muon tunneling betw...

2004
Ronald McNabb

Data from the muon g-2 experiment at Brookhaven National Lab has been analyzed to search for a muon electric dipole moment(EDM), which would violate parity and time reversal symmetries. An EDM would cause a tilt in the spin precession plane of the muons, resulting in a vertical oscillation in the position of electrons hitting the detectors. No signal has been observed. Based on this analysis, a...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده علوم 1393

in this thesis, structural, electronical, and optical properties of inverse pervskite(ca3pbo) in cubic phase have been investigated.the calculation have been done based on density functional theory and according to generalized gradiant approximate (gga) as correlating potential. in order to calculate the configurations, implementing in the wien2k code have been used from 2013 version. first of ...

2006
M. Popovic R. P. Johnson

It has been shown how a superconducting Linac that was designed to be a high-intensity proton driver for Fermilab [1] can be modified and augmented to also serve as the muon accelerating section for a neutrino factory [2]. In this report we consider the same approach, where the Linac does double duty, but with the idea that the Linac and other parameters are chosen to serve only as a neutrino f...

2007
G. Wrochna

RPC geometry and Muon Trigger acceptance study is presented. Innuence of detector dead areas on the trigger performance is discussed. Various possible trigger algorithms are compared. Recommendations for designing RPC geometry and choosing among trigger algorithms are given. 1 RPC geometrical coverage in the barrel The CMS Muon System 1] consists of 4 muon stations (both in the barrel and in th...

2003
R. F. Schwitters

We describe the muon track direction (pointing backwards along the trajectory) by the zenith angle Θ and azimuth Φ. The position of one point on the muon trajectory can be taken as the point of closest approach to the axis of the detector cylinder. The distance of closest approach of the muon track to the axis is denoted by b in what follows. Uncertainty in the extrapolated track arising from p...

2001
Ailin Zhang

Based on the bound state description of muon and general relativistic covariant quantum field theory, we illustrate with a simple composite model that the observed deviation of (g − 2)μ can be a demonstration of the substructure of muon and give a constraint on the radius of muon in a light constituent model or the masses of constituents in a heavy constituent model. PACS number: 11.10.-z; 11.1...

2009
Qing He Kirk McDonald

Muons are the most numerous charged particles at sea level. The muon flux at ground-level has been measured many times in the past 50 years [1, 2, 3, 4, 5]. When muon decay is negligible (Eμ > 100/ cos θGeV, where θ is the polar angle of the incoming muon), and the curvature of the Earth can be neglected (θ < 70◦), the differential flux across a horizontal surface can be well described by the G...

2016

Four scintillation paddles and coincidence techniques are used to determine the overall flux and angular distribution of cosmic ray muons. The muon lifetime is measured using rare events where, after passage of a muon into a scintillator is detected, its decay is also detected a short time later. The distribution of the decay times provides information about the average muon lifetime. Statistic...

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