Author: Stephen Milton Avery
Publisher:
ISBN:
Category : Pion production
Languages : en
Pages : 288
Book Description
Pion Electroproduction from Helium3, Deuterium, and Hydrogen
Author: Stephen Milton Avery
Publisher:
ISBN:
Category : Pion production
Languages : en
Pages : 288
Book Description
Publisher:
ISBN:
Category : Pion production
Languages : en
Pages : 288
Book Description
Longitudinal Electroproduction of Charged Pions from Hydrogen, Deuterium, and Helium-3
Author: David J. Gaskell
Publisher:
ISBN:
Category : Pion production
Languages : en
Pages : 482
Book Description
Conventional pictures of nuclear interactions, in which the pion mediates the long/medium range part of the nuclear force, predict an enhancement of the virtual pion cloud in nuclei relative to that in the free nucleon. Jefferson Lab Experiment E91003 measured charged pion electroproduction from Hydrogen, Deuterium, and Helium-3. The longitudinal cross section, which in the limit of pole dominance can be viewed as the quasifree knockout of a virtual pion, was extracted via a Rosenbluth separation. The longitudinal cross sections from Deuterium and Helium-3 were compared to Hydrogen to look for signatures of the nuclear pions.
Publisher:
ISBN:
Category : Pion production
Languages : en
Pages : 482
Book Description
Conventional pictures of nuclear interactions, in which the pion mediates the long/medium range part of the nuclear force, predict an enhancement of the virtual pion cloud in nuclei relative to that in the free nucleon. Jefferson Lab Experiment E91003 measured charged pion electroproduction from Hydrogen, Deuterium, and Helium-3. The longitudinal cross section, which in the limit of pole dominance can be viewed as the quasifree knockout of a virtual pion, was extracted via a Rosenbluth separation. The longitudinal cross sections from Deuterium and Helium-3 were compared to Hydrogen to look for signatures of the nuclear pions.
Pion Electroproduction Form Helium 3, Deuterium, and Hydrogen
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
A series of measurements for pion electroproduction from helium-3, deuterium, and hydrogen were completed at the Thomas Jefferson National Accelerator Facility by the NucPi Collaboration. E91003 began taking data in February 1998 and was completed in April 1998. The longitudinal and transverse parts of the differential cross section were extracted, by means of a Rosenbluth type separation, in the direction parallel to the virtual photon, at Q 2 = 0.4 GeV 2, for W = 1.15 and W = 1.6 GeV. The mass dependence of the longitudinal cross section should provide insight into the surprising apparent absence of any significant cross section enhancement due to excess pions in the nuclear medium.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
A series of measurements for pion electroproduction from helium-3, deuterium, and hydrogen were completed at the Thomas Jefferson National Accelerator Facility by the NucPi Collaboration. E91003 began taking data in February 1998 and was completed in April 1998. The longitudinal and transverse parts of the differential cross section were extracted, by means of a Rosenbluth type separation, in the direction parallel to the virtual photon, at Q 2 = 0.4 GeV 2, for W = 1.15 and W = 1.6 GeV. The mass dependence of the longitudinal cross section should provide insight into the surprising apparent absence of any significant cross section enhancement due to excess pions in the nuclear medium.
Longitudinal Lelectroproduction of Charged Pions on Hydrogen, Deuterium, and Helium 3
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Conventional pictures of nuclear interactions, in which the pion mediates the long/medium range part of the nuclear force, predict an enhancement of the virtual pion cloud in nuclei relative to that in the free nucleon. Jefferson Lab Experiment E91003 measured charged pion electroproduction from Hydrogen, Deuterium, and Helium-3. The longitudinal cross section, which in the limit of pole dominance can be viewed as the quasifree knockout of a virtual pion, was extracted via a Rosenbluth separation. The longitudinal cross sections from Deuterium and Helium-3 were compared to Hydrogen to look for signatures of the nuclear pions.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Conventional pictures of nuclear interactions, in which the pion mediates the long/medium range part of the nuclear force, predict an enhancement of the virtual pion cloud in nuclei relative to that in the free nucleon. Jefferson Lab Experiment E91003 measured charged pion electroproduction from Hydrogen, Deuterium, and Helium-3. The longitudinal cross section, which in the limit of pole dominance can be viewed as the quasifree knockout of a virtual pion, was extracted via a Rosenbluth separation. The longitudinal cross sections from Deuterium and Helium-3 were compared to Hydrogen to look for signatures of the nuclear pions.
Electroproduction of Pions from Hydrogen and Deuterium
A Measurement of Charged Pion Electroproduction from Hydrogen and Deuterium
Pion Transfer from Hydrogen to Deuterium in H 2 O + D 2 O Mixtures
Electro-pion Production from Proton, Deuteron, and Helium-3
Author: Roger Jay Loucks
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The cross section for the $p(e,espprimepisp+)n, d(e,espprimepisp+)2n$ and $sp3He(e,espprimepisp+)sp3H$ reactions are calculated using a simple model with pion, nucleon and $Delta$-resonance degrees of freedom for the kinematical conditions used in a recent Saclay experiment. For the $d(e,espprimepisp+)2n$ reaction, final state interactions between the two outgoing neutrons are found to have a large effect. The calculated quenching of the $pisp+$ production cross section for the deuterium target is in agreement with that observed experimentally. It is predicted that due to the strong final state interactions in the singlet S state of the two neutrons, the $d(e,espprimepisp+)2n$ cross section can have a large dependence on the orientation of the deuteron spin. For the $sp3He(e,espprimepisp+)sp3H$ reaction, the quenching is predicted to be $sim$0.4 which is in agreement with the unpublished results of the Mainz experiment. The four important contributions to the quenching are identified as: (i) the finite size i.e., the form factor of the trinucleons, (ii) the spin-isospin correlations in the trinucleons, (iii) the finite range of the propagation of the struck proton, and (iv) the possible pion-nucleon final state interactions.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The cross section for the $p(e,espprimepisp+)n, d(e,espprimepisp+)2n$ and $sp3He(e,espprimepisp+)sp3H$ reactions are calculated using a simple model with pion, nucleon and $Delta$-resonance degrees of freedom for the kinematical conditions used in a recent Saclay experiment. For the $d(e,espprimepisp+)2n$ reaction, final state interactions between the two outgoing neutrons are found to have a large effect. The calculated quenching of the $pisp+$ production cross section for the deuterium target is in agreement with that observed experimentally. It is predicted that due to the strong final state interactions in the singlet S state of the two neutrons, the $d(e,espprimepisp+)2n$ cross section can have a large dependence on the orientation of the deuteron spin. For the $sp3He(e,espprimepisp+)sp3H$ reaction, the quenching is predicted to be $sim$0.4 which is in agreement with the unpublished results of the Mainz experiment. The four important contributions to the quenching are identified as: (i) the finite size i.e., the form factor of the trinucleons, (ii) the spin-isospin correlations in the trinucleons, (iii) the finite range of the propagation of the struck proton, and (iv) the possible pion-nucleon final state interactions.
Electroproduction of Poins from Hydrogen and Deuterium
Author: Gerald G. Ohlsen
Publisher:
ISBN:
Category : Nuclear physics
Languages : en
Pages : 125
Book Description
Publisher:
ISBN:
Category : Nuclear physics
Languages : en
Pages : 125
Book Description