Abstract
New experimental results on the ratio Rdp of the quasi-elastic charge-exchange yield at the outgoing proton angle \( \theta_{{p,{\rm Lab}}}^{}\) = 0° for the nd \( \rightarrow\) p(nn) reaction to the elastic np \( \rightarrow\) pn charge-exchange yield are presented. The measurements were carried out at the Nuclotron of the Veksler and Baldin Laboratory of High Energies of the JINR (Dubna) at the neutron beam kinetic energies of 0.55, 0.8, 1.0, 1.2, 1.4, 1.8 and 2.0GeV. The intense neutron beam with small momentum spread was produced by break-up of deuterons which were accelerated and extracted to the experimental hall. In both reactions mentioned above the outgoing protons with the momenta p p approximately equal to the neutron beam momentum p n, beam were detected in the directions close to the direction of incident neutrons, i.e. in the vicinity of the scattering angle \( \theta_{{p,{\rm Lab}}}^{}\) = 0° . Measured in the same data taking runs, the angular distributions of the charge-exchange reaction products were corrected for the well-known instrumental effects and averaged in the vicinity of the incident neutron beam direction. These corrected angular distributions for every of nd \( \rightarrow\) p(nn) and np \( \rightarrow\) pn charge-exchange processes were proportional to the differential cross-sections of the corresponding reactions. The data were accumulated by the Delta-Sigma set-up magnetic spectrometer with two sets of multiwire proportional chambers located upstream and downstream of the momentum analyzing magnet. Inelastic processes were considerably reduced by the additional detectors surrounding the hydrogen and deuterium targets. The time-of-flight system was applied to identify the detected particles. The new Rdp data are compared with the existing ones, which were obtained below 1GeV, and with the calculations which were made using the phenomenological NN amplitude sets.
Similar content being viewed by others
References
V.I. Sharov, N.G. Anischenko, V.G. Antonenko, in Proceedings of the XVII International Baldin Seminar on High Energy Physics Problems, Relativistic Nuclear Physics and Quantum Chromodynamics, Dubna, September 27 -- October 2, 2004, edited by A.N. Sissakian, V.V. Burov, A.I. Malakhov, JINR E1,2-2005-103 (JINR, Dubna, 2005) p. 161.
V.I. Sharov, N.G. Anischenko, V.G. Antonenko, in Proceedings of the Advanced Studies Institute on Symmetries and Spin (SPIN-PRAHA 2004), Czech Republic, Prague, July 5-10, 2004, Czech J. Phys. 55, A289 (2005).
V.I. Sharov, N.G. Anischenko, V.G. Antonenko, in Proceedings of the XI Advanced Research Workshop on High Energy Spin Physics (DUBNA-SPIN-05), Dubna, Sept. 27 -- Oct. 1, 2005, edited by A.V. Efremov, S.V. Goloskokov, JINR E1,2-2006-105 (JINR, Dubna, 2006) p. 424.
J. Ball, R. Binz, J. Bystrický, Eur. Phys. J. C 5, 57 (1998).
J. Bystrický, F. Lehar, P. Winternitz, J. Phys. (Paris) 39, 1 (1978).
B.P. Adiasevich, Z. Phys. C 71, 65 (1996).
V.I. Sharov, JINR Rapid Commun. No. 3[77]-96, 13 (1996).
V.I. Sharov, JINR Rapid Commun. No. 4[96]-99, 17 (1999).
V.I. Sharov, Eur. Phys. J. C 13, 255 (2000).
V.I. Sharov, Eur. Phys. J. C 37, 79 (2004).
V.I. Sharov, Yad. Fiz. 68, 1858 (2005)
V.P. Derenchuk, 2001 Particle Accelerator Conference, edited by P.W. Lucas, S. Webber, IEEE: 01CH37268C, 2093 (2001).
G.F. Chew, Phys. Rev. 80, 196 (1950).
G.F. Chew, Phys. Rev. 84, 710 (1951).
I. Pomeranchuk, Dokl. Akad. Nauk LXXVII, 249 (1951).
L.I. Lapidus, J. Exp. Theor. Phys. 32, 1437 (1957)
N.W. Dean, Phys. Rev. D 5, 1661 (1972).
N.W. Dean, Phys. Rev. D 5, 2832 (1972).
R.A. Arndt, C.H. Oh, I.I. Strakovsky, R.L. Workman, F. Dohrmann, Phys. Rev. C 56, 3005 (1997)
R.A. Arndt, I.I. Strakovsky, R.L. Workman, Phys. Rev. C 62, 034005 (2000)
R.A. Arndt, W.J. Briscoe, I.I. Strakovsky, R.L. Workman, Phys. Rev. C 76, 025209 (2007)
F. Lehar, to be published in Part. Nucl. 40, No. 6 (2009).
A. Kirillov, Preprint JINR E13-96-210, JINR, Dubna (1996).
V.G. Ableev, Nucl. Phys. A 393, 491 (1983)
N.V. Gorbunov, A.G. Karev, in Proceedings of the XII International Symposium on Nuclear Electronics, Varna, Bulgaria, Sept. 12--18, 1988, JINR D13-88-938 (JINR, Dubna, 1989) p. 103.
J. Ball, Eur. Phys. J. C 11, 51 (1999).
A. de Lesquen, Eur. Phys. J. C 11, 69 (1999).
A. Langsford, Nucl. Phys. A 99, 246 (1967).
B.E. Bonner, Phys. Rev. C 17, 664 (1978).
B. Pagels, Untersuchung der quasielastischen Ladungsaustauschreaktion $nd \rightarrow pnn$ im Neutronenergiebereich von 290 bis 570 MeV, Diplomarbeit, Fakultat fur Physik der Universitat Freiburg im Breisgau (1988) unpublished.
W.M. Powell, Report UCRL--1191, Berkeley (1951).
J.R. Cladis, J. Hadley, W.N. Hess, Phys. Rev. 86, 110 (1952).
J.A. Hofmann, K. Strauch, Phys. Rev. 90, 449 (1953).
V.P. Dzhelepov, Izv. Akad. Nauk XIX, 573 (1955).
R.R. Larsen, Nuovo Cimento 18, 1039 (1960).
V.P. Dzhelepov, in Proceedings of the International Conference on High Energy Physics, CERN, Geneva, 4--11 July 1962, edited by J. Prentki (CERN, Geneva, 1962) p. 19.
C. Wong, Phys. Rev. 116, 164 (1959).
V.K. Voitovetskii, I.L. Korsunskii, Yu.F. Pazhin, Nucl. Phys. 69, 531 (1965).
C.J. Batty, R.S. Gilmore, G.H. Stafford, Phys. Lett. 16, 137 (1965).
M.J. Esten, T.C. Griffith, G.J. Lush, A.J. Metheringham, Rev. Mod. Phys. 37, 533 (1965).
D.F. Measday, Phys. Lett. 21, 66 (1966).
C.W. Bjork, Phys. Lett. B 63, 31 (1976).
B.S. Aladashvili, B. Badełek, V.V. Glagolev, Nucl. Phys. B 86, 461 (1975).
V.V. Glagolev, JINR communication P1-2006-112, JINR, Dubna (2006).
N.B. Ladygina, Yad. Fiz. 71, 58 (2008).
Author information
Authors and Affiliations
Additional information
P. Braun-Munzinger
Rights and permissions
About this article
Cite this article
Sharov, V.I., Morozov, A.A., Shindin, R.A. et al. Measurements of the ratio Rdp of the quasi-elastic nd \( \rightarrow\) p(nn) to the elastic np \( \rightarrow\) pn charge-exchange process yields at zero proton emission angle over the 0.55-2.0 GeV neutron beam energy region. Eur. Phys. J. A 39, 267–280 (2009). https://doi.org/10.1140/epja/i2008-10719-x
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1140/epja/i2008-10719-x