Summary
Different cross-section measurements of elastic scattering of π± on3He are presented. The study was done both for positive and negative pions at 98, 120, 135, 145, 156 MeV, for negative pions also at 198 and 208 MeV and for positive pions also at 68MeV. The experiment was carried out with a high-pressure helium self-shunted streamer chamber surrounded by a hodoscope of scintillation counters. The results are compared with optical-model calculations using spin-and isospin-dependent potentials. The energy dependence of the total elastic (π±,3He) scattering cross-section is discussed. Estimates of the (π3He3H) coupling constant according to the theory of Chew and Low are presented.
Riassunto
Sono presenti i risultati della misura della sezione d’urto differenziale di diffusione elastica (π+,3He) a 68, 98, 120, 135, 145, 156 MeV e (π−,3He) as 98, 120, 135, 145, 156, 198, 208 MeV. I dati sperimentali sono confrontati con le previsioni del modello ottico ed inoltre viene fatta una stima della costante di accoppiamento (π3He3H).
Реэюме
Иэмерены дифференциальные сечения упругого рассеяния пионов на ядрах3He при знергиях 68, 98, 120,135, 145, 156, 198, 208 MзB. Эксперименты вы-полнены на гелиевой стримерной камере высокого давления. Данные сопоста-вляются с расчетами по оптииеской модели. Даются оценки констаяты свяэиf 2(π3He3H).
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References
I. V. Falomkin, C. Georgescu, M. M. Kulyukin, V. I. Lyashenko, M. Mihul, F. Nichitiu, G. B. Pontecorvo, G. Piragino, Yu. A. Shcherbakov andR. Garfagnini:Lett. Nuovo Cimento,2, 1121 (1972).
I. V. Falomkin, M. M. Kulyukin, V. I. Lyashenko, G. B. Pontecorvo, Yu. A. Shcherbakov, M. Albu, T. Angelescu, A. Mihul, F. Nichitiu, R. Garfagnini andG. Piragino:Nuovo Cimento,24 A, 93 (1974).
I. V. Falomkin, V. P. Korolyov, M. M. Kulyukin, V. I. Lyashenko, G. B. Pontecorvo, G. Piragino andYu. A. Shcherbakov:Lett. Nuovo Cimento,3, 461 (1972);5, 757 (1972).
M. Alub, T. Besliu, I. V. Falomkin, R. Garfagnini, M. M. Kulyukin, V. I. Lyashenko, A. Mikul, F. Nichitiu, G. Piragino, G. B. Pontecorvo andYu. A. Shcherbakov:Nuovo Cimento,21, 168 (1974).
F. Balestra, L. Busso, R. Garfagnini, G. Perno, G. Piragino, R. Barbini, C. Guaraldo, R. Scrimaglio, I. V. Falomkin, M. M. Kulyukin, G. B. Pontecorvo andYu. A. Shcherbakov:Nucl. Instr. Meth.,125, 157 (1975).
R. Mach, F. Nichitiu andYu. A. Shcherbakov:Phys. Lett.,53 B, 133 (1974).
J. S. McCarthy, I. Sick, R. R. Whitney andM. R. Yearian:Phys. Rev. Lett.,25, 884 (1970).
J. P. Dedonder:Nucl. Phys.,174 A, 251 (1971).
S. Almehed andC. Lovelace:Nucl. Phys.,40 B, 157 (1972).
D. V. Dumbrais, F. Nichitiu andYu. A. Shcherbakov:Sov. Journ. Nucl. Phys.,18, 168 (1974).
G. Chew andF. Low:Phys. Rev.,101, 1570 (1956);J. Hamilton:High Energy Physics, Vol.1, edited byE. Burhop (New York, N. Y., 1967), p. 241.
W. M. Layson:Nuovo Cimento,20, 1207 (1961);R. L. Ingraham:Lett. Nuovo Cimento,9, 331 (1974).
R. Mach andF. Nichitiu: preprint JINR, Dubna (in press).
T. E. O. Ericson andM. P. Locher:Nucl. Phys.,148 B, 1 (1970).
B. Z. Kopeliovich:Sov. Journ. Nucl. Phys.,18, 594 (1974).
P. Osland:Nucl. Phys.,56 B, 308 (1973);C. Wilkin, C. R. Cox, J. J. Domingo, K. Gabathuler, E. Pedroni, J. Rohlin, P. Schwaller andN. W. Tanner:Nucl. Phys.,62 B, 61 (1973).
G. T. A. Squier, M. E. Gage, G. J. Pyle, A. S. Glough, G. K. Turner, B. W. Allardyce, C. J. Batty, D. J. Baugh, W. J. McDonald, R. A. J. Riddle andL. H. Watson:Phys. Rev. Lett.,31, 389 (1973);M. Ericson andM. Krell: preprint LYCEN 7457 (1974).
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Shcherbakov, Y.A., Angelescu, T., Falomkin, I.V. et al. Elastic scattering of π±-Mesons on3He in the energy interval (68÷208) MeV. Nuov Cim A 31, 262–276 (1976). https://doi.org/10.1007/BF02729731
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DOI: https://doi.org/10.1007/BF02729731