Results 191 to 200 of about 49,053 (225)
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Pion-induced pion production on the deuteron
Physical Review C, 1986Pion-induced pion production on the deuteron was studied via the reactions d pp and d nn. The doubly differential cross sections for these reactions were measured, covering the center-of-mass phase space at incident pion energies of 256, 331, and 450 MeV.
, Lichtenstadt +9 more
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Pion-induced pion production in nuclei
Physical Review C, 1997The process of pion-induced pion production in nuclei has been studied with the A(π+,π+π-) and A(π+,π+π-p) reactions for four nuclei 2H, 12C, 40Ca, and 208Pb at an incident pion energy of Tπ+=283 MeV. The π+π- and π+π-p particles in the final state were detected in coincidence with the CHAOS spectrometer at TRIUMF.
BONUTTI, FAUSTINO +17 more
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Pion-pion scattering in the two-pion exchange approximation
Il Nuovo Cimento, 1962The results of a calculation of pion-pion scattering in two-pion exchange approximation are presented. IfS andP-waves are subtracted and iftmax≲16 andsmax≲1 600 the equations converge. It is found that there is little alteration in the low-energy solutions obtained in an earlier calculation using Legendre polynomial expansions to determine the left cut.
Brandsden, B. H., Moffat, J. W.
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On the photoproduction of pions on pions
Il Nuovo Cimento, 1962An integral equation for the amplitude of the photoproduction of pions on pions is derived from unitarity and Mandelstam representation. An iteration technique for obtaining approximate solutions is adopted and illustrated by assuming a sharp pion-pion resonance in theP ...
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Physical Review C, 1989
A potential containing a one-pion-exchange tail and regularized at the origin by means of three parameters is used to construct several families of deuteron wave functions, which are employed in the assessment of the influence of the inner parts of the potential over observables such as ${r}_{m}$, \ensuremath{\eta}, and Q.
Ballot, J.L. +2 more
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A potential containing a one-pion-exchange tail and regularized at the origin by means of three parameters is used to construct several families of deuteron wave functions, which are employed in the assessment of the influence of the inner parts of the potential over observables such as ${r}_{m}$, \ensuremath{\eta}, and Q.
Ballot, J.L. +2 more
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Evidence Concerning Pion-Pion Interactions below the 765-Mev Pion-Pion Resonance
Physical Review, 1962A search has been made for pion-pion resonances in the reaction ${\ensuremath{\pi}}^{\ensuremath{-}}+p\ensuremath{\rightarrow}{\ensuremath{\pi}}^{\ensuremath{-}}+{\ensuremath{\pi}}^{0}+p$ at incident pion energies of 871 Mev and 775 Mev, using a sodium-iodide luminescent chamber as a detector. The spectra of ${m}^{*}$, the total energy of the two pions
C. Clyde Peck +2 more
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THE QUARK MODEL PION AND THE GOLDSTONE PION
Nuclear Physics A, 1982Abstract An approximate vacuum wave-function for massless quarks is proposed which describes a collective. Goldstone pion with the internal structure of a quark model pion.
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Pion Production in Pion-Nucleon Collisions
Physical Review, 1957The production of a single pion in pion-nucleon collisions has been studied by using the Chew-Low formalism with $p$-wave coupling. The equation for the $T$-matrix is solved by using the one-meson approximation. The solution is used to compute the cross sections for pion production and the two-meson corrections to the scattering equation of Chew and ...
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Pion Production in Pion-Nucleon Scattering
Physical Review, 1957Made available in DSpace on 2015-05-12T17:12:02Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 0018135.PDF: 1835414 bytes, checksum: 69c5ede31d51bdb49056d3b2910a55b5 (MD5) Previous issue date: 1956 ; Embargo set by: Seth Robbins for item 77503 Lift date: Forever Reason: Restricted to the U of I ...
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Pion Softening and Pion Condensation
Physics of Atomic Nuclei, 2020In this paper after a historical introduction I discuss ideas of a pion softening and pion condensation in a dense nuclear matter, in particular in neutron stars, and a conjecture about a feasible existence of abnormal nuclei.
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