Register to reply

Error of narrow width approximation

by Safinaz
Tags: approximation, error, narrow, width
Share this thread:
Safinaz
#1
Nov25-13, 08:04 AM
P: 59
Hi all,

Let me ask about what is meant that
Narrow width approximation has an error ~ ## \Gamma/m ##, is it mean
the calculations of the cross section with NWA differ by that with no approximation by ## \Gamma/m ##.
For ex. If ##\Gamma = 100 ## , m = 1000 and sigma = 10^-6, then sigma (NWA)= 10^-5, or this error appears
only as a shift for the resonance peak of the inv. mass plot of the propagator products (like pp > Z > f fbar).

Regards,
S.
Phys.Org News Partner Physics news on Phys.org
UCI team is first to capture motion of single molecule in real time
And so they beat on, flagella against the cantilever
Tandem microwave destroys hazmat, disinfects

Register to reply

Related Discussions
Narrow-width approximation High Energy, Nuclear, Particle Physics 2
SVD approximation error Linear & Abstract Algebra 0
Narrow Width Approximation for a spin 1 resonance High Energy, Nuclear, Particle Physics 6
Trapezoidal Approximation Error Calculus & Beyond Homework 1
Soft error pulse width in CPU Engineering, Comp Sci, & Technology Homework 2