Author: William Robert Frazer
Publisher:
ISBN:
Category : Form factor (Nuclear physics)
Languages : en
Pages : 70
Book Description
A Proposal for Determining the Electromagnetic Form Factor of the Pion
Author: William Robert Frazer
Publisher:
ISBN:
Category : Form factor (Nuclear physics)
Languages : en
Pages : 70
Book Description
Publisher:
ISBN:
Category : Form factor (Nuclear physics)
Languages : en
Pages : 70
Book Description
Nuclear Science Abstracts
Aproposal for Determining the Electro-Magnetic Form Factor of the Pion (thsi).
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The possibility of measuring the electromagnetic form factor of the pion by extrapolation of the cross section for e/sup -/ + p 1100 deg C are n + The effects of /sup +/ + e/sup -/ was investigated. The method is based on the existence of a pole in the electropionproduction scattering amplitude as a function of the invariant momentum-transfer of the nucleon. The residue of this pole is the pion form factor multiplied by a known coefficient. Since the pole lies slightly outside the physical region of the invariant momentum transfer, an extrapolation of the experimental data is required. An approximate calculation of the electropion-production cross section was made in order to estimate the experimental accuracy necessary for a significant extrapolation. Accuracy is required which is an order of magnitude better than that achieved at present in similar experiments. (auth).
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The possibility of measuring the electromagnetic form factor of the pion by extrapolation of the cross section for e/sup -/ + p 1100 deg C are n + The effects of /sup +/ + e/sup -/ was investigated. The method is based on the existence of a pole in the electropionproduction scattering amplitude as a function of the invariant momentum-transfer of the nucleon. The residue of this pole is the pion form factor multiplied by a known coefficient. Since the pole lies slightly outside the physical region of the invariant momentum transfer, an extrapolation of the experimental data is required. An approximate calculation of the electropion-production cross section was made in order to estimate the experimental accuracy necessary for a significant extrapolation. Accuracy is required which is an order of magnitude better than that achieved at present in similar experiments. (auth).
קליטתם של בני נוער יוצאי אתיופיה
The Form Factor of the Neutral Pion
Author: Peter Nemethy
Publisher:
ISBN:
Category : Mesons
Languages : en
Pages : 76
Book Description
In an experiment performed at Columbia University's Nevis Cyclotron, the decay 'neutral-pion to gamma photon + electron + positron' was observed. Using a system of counters and spark chambers 2200 events were recorded with an opening angle of the Dalitz pair near 120 deg. The effect of pi-zero structure on the invariant mass spectrum of the pair is interpreted as an electromagnetic form factor for the neutral-pion. The form factor is a linear function, (gamma)(x) = 1 + ax, of the invariant mass squared, x. The experimental result for the form factor slope is a = (+0.01 plus or minus 0.11) (1/(pion mass)sq.).
Publisher:
ISBN:
Category : Mesons
Languages : en
Pages : 76
Book Description
In an experiment performed at Columbia University's Nevis Cyclotron, the decay 'neutral-pion to gamma photon + electron + positron' was observed. Using a system of counters and spark chambers 2200 events were recorded with an opening angle of the Dalitz pair near 120 deg. The effect of pi-zero structure on the invariant mass spectrum of the pair is interpreted as an electromagnetic form factor for the neutral-pion. The form factor is a linear function, (gamma)(x) = 1 + ax, of the invariant mass squared, x. The experimental result for the form factor slope is a = (+0.01 plus or minus 0.11) (1/(pion mass)sq.).
Pion Form Factor in Lattice QCD with Light Pions
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
We present a recent calculation of the pion electromagnetic form factor in Lattice QCD with light (~300 MeV) dynamical pions. Our result is consistent with experimental data and the vector meson dominance (VMD) hypothesis up to momentum transfer of 4 GeV2.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
We present a recent calculation of the pion electromagnetic form factor in Lattice QCD with light (~300 MeV) dynamical pions. Our result is consistent with experimental data and the vector meson dominance (VMD) hypothesis up to momentum transfer of 4 GeV2.