Inelastic scattering of medium-energy pions from carbon

Rogers, C.; Wilkin, C.

doi:10.1007/bf02770152

Cited by 16 publications

(3 citation statements)

References 11 publications

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“…These forms suggest themselves to us both by their simplicity and by analogy to 7rC -7rC* data. Both intermediate- 6 and high-energy 3 TTC^^C* scattering is usually parametrized by At 2 e bt (where the factor t 2 is suggested by the electron-carbon form factor), 7 with b typically 38-45 (GeV/c)" 2 . However in our case the form factor may differ because of absorptive effects.…”

Section: Photon-eadronmentioning

confidence: 99%

Study ofπ−C→π+π−
Ascoli
¹
,
Chapin
²
,
Cutler
³

et al. 1973
Phys. Rev. Lett.
7
0
0
0
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to screen triality. 8 Understanding these quantum number issues is an important problem for the future.The relevance of these ideas to the real world can be tested by studying the final states of deepinelastic processes. The produced hadrons should form jets aligned along the direction of the struck parton. 9 Their distribution in momentum space should be given by dpjE (/>" measured along the direction of the struck parton) and their multiplicity should, therefore, grow logarithmically with q 2 . Once quark quantum numbers are incorporated into the present framework, many more predictions should result. Our ideas are still in a crude state. However, they possess the promise of providing much insight into many aspects of the problem of hadrons.One of us (J.K.) wishes to thank J. D. Bjorken for numerous conversations concerning the quarkparton puzzle. Professor Bjorken's intuitive ideas on deep-inelastic final states played a crucial role in the development of this work. J. K. also wishes to thank his colleagues at Tel-Aviv University for their warm hospitality.The production of three pions in carbon via 1= 0 exchange has been studied using the process 7r"C -*7r + 7r~7r"C*, where C* is the 7=0, J p = 2 + excited state of the carbon nucleus at 4.44 MeV. Preliminary results on the Sir mass distribution, the t distribution, and the spin and parity states within the Sir system are reported.

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Section: Photon-eadronmentioning

confidence: 99%

Study ofπ−C→π+π−
Ascoli
¹
,
Chapin
²
,
Cutler
³

et al. 1973
Phys. Rev. Lett.
7
0
0
0
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“…We shall consider the spin-flip scattering which is clearly observed in pion scattering in detail, since the illustration of our discussion is simplified for this case, and some theoretical analysis on the non-flip scattering, relating it to (p, p') and (e, e') scattering, has appeared in the literature. 2 l As a related problem, it might be useful here to mention the inelastic scattering of high-energy protons by nuclei. It will help us to understand some features of scattering of pions.…”

mentioning

confidence: 99%

Spin-Flip Scattering of Pions by Nuclei

Futami

Kohmura

1972

Prog. Theor. Phys.

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1563Inelastic scattering of pions from nuclei is discussed to give information on nuclear structure. The differential cross section at small angles is related to the beta and gamma transitions. Discussion is simplified for the spin-flip scattering. § I. IntroductionThe properties of pions are well known, and it is of interest to use them as probes for investigation of nuclear structure. In addition some more advantages of pions are the fact that the elementary pion-nucleon interaction up to kinetic energies of the order of 300 MeV is much better understood than the nucleonnucleon interaction, and that the small pion mass makes recoil corrections very small. Little is, however, observed about the inelastic scattering of pions leaving the target nucleus in individual excited states. Recently measurements of the differential cross sections for the inelastic scattering of pions on C 12 at energies near the 3-3 resonance have been reported by Binon et al. 1 l Their experiments could not resolve the individual nuclear levels at the excitation energies above '"'"'10 MeV. But this type of research with a high accuracy became possible through the development of research techniques.The purpose of this paper is to investigate general features of the inelastic scattering of pions on nuclei leading to the excitation of the discrete nuclear levels. We shall consider the spin-flip scattering which is clearly observed in pion scattering in detail, since the illustration of our discussion is simplified for this case, and some theoretical analysis on the non-flip scattering, relating it to (p, p') and (e, e') scattering, has appeared in the literature. 2 l As a related problem, it might be useful here to mention the inelastic scattering of high-energy protons by nuclei. It will help us to understand some features of scattering of pions. The angular distributions for the inelastic scattering leading to individual excited states can in general be classified into two categories; falling and rising cross sections at the forward angle. The spinflip scattering of protons, 3 l which belongs to the latter, results in a unique angular distribution with a maximum at 0°, and in contrast the spin-non-flip inelastic scattering except for the Coulomb excitation of the giant dipole resonance state has a at East Tennessee State University on June 22, 2015 http://ptp.oxfordjournals.org/ Downloaded from

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“…<r 7P = {aQy2*s*)P Mo2 dW*j^dk 2 k 2 \f{k 2 , W 2 )\ 2 (6) ~[aQ 2 /2ir(l+a)]s aml fcdk 2 k 2 p(k 2 ).…”

mentioning

confidence: 99%

Electromagnetic Structure of the Proton, Partons, and the Rise in the TotalppCross Section

West

1973

Phys. Rev. Lett.

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Inelastic scattering of medium-energy pions from carbon

Cited by 16 publications

References 11 publications

Study ofπ−C→π+π−
Ascoli
¹
,
Chapin
²
,
Cutler
³

et al. 1973
Phys. Rev. Lett.
7
0
0
0
View full text Add to dashboard Cite

Study ofπ−C→π+π−
Ascoli
¹
,
Chapin
²
,
Cutler
³

et al. 1973
Phys. Rev. Lett.
7
0
0
0
View full text Add to dashboard Cite

Spin-Flip Scattering of Pions by Nuclei

Electromagnetic Structure of the Proton, Partons, and the Rise in the TotalppCross Section

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Inelastic scattering of medium-energy pions from carbon

Cited by 16 publications

References 11 publications

Study ofπ−C→π+π−Ascoli1, Chapin2, Cutler3 et al. 1973Phys. Rev. Lett.7000View full textAdd to dashboardCite

Study ofπ−C→π+π−Ascoli1, Chapin2, Cutler3 et al. 1973Phys. Rev. Lett.7000View full textAdd to dashboardCite

Spin-Flip Scattering of Pions by Nuclei

Electromagnetic Structure of the Proton, Partons, and the Rise in the TotalppCross Section

Contact Info

Product

Resources

About

Study ofπ−C→π+π−
Ascoli
¹
,
Chapin
²
,
Cutler
³

et al. 1973
Phys. Rev. Lett.
7
0
0
0
View full text Add to dashboard Cite

Study ofπ−C→π+π−
Ascoli
¹
,
Chapin
²
,
Cutler
³

et al. 1973
Phys. Rev. Lett.
7
0
0
0
View full text Add to dashboard Cite