Subthreshold antiproton production in pA, dA and αA reactions

Y. Sugaya; D. Ashery; J. Chiba; H. Ito; K. Kimura; Yu T. Kiselev; S. Kouda; K. Miyano; T. Murakami; J. Murata; T. Nagae; Y. Nakai; M. Nomachi; M. Numajiri; H. Ochiishi; S. Sawada; M. Sekimoto; T. Shibata; T. Suzuki; K. H. Tanaka; M. K. Vlasov; Y. Yamanoi; K. Yasuda; Y. Yoshimura

doi:10.1016/S0375-9474(98)00122-5

Subthreshold antiproton production in pA, dA and αA reactions

Y. Sugaya^*, D. Ashery, J. Chiba, H. Ito, K. Kimura, Yu T. Kiselev, S. Kouda, K. Miyano, T. Murakami, J. Murata, T. Nagae, Y. Nakai, M. Nomachi, M. Numajiri, H. Ochiishi, S. Sawada, M. Sekimoto, T. Shibata, T. Suzuki, K. H. TanakaM. K. Vlasov, Y. Yamanoi, K. Yasuda, Y. Yoshimura

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

An enormous enhancement of antiproton production in deuteron-and α-induced reactions has been observed in the subthreshold energy region between 2 and 5 GeV/nucleon. Antiprotons produced at 5.1° with a momentum range of between 1.0 and 2.5 GeV/c were measured by a beam-line spectrometer and identified by the time-of-flight method. The production cross sections in the deuteron-and α-induced reactions at an incident energy of 3.5 GeV/nucleon were 2 and 3 orders of magnitude larger than those in proton-induced reaction at the same energy. The enhancement in light-ion reactions could not be explained by the internal motion in the projectile and target nuclei. The target-mass dependence (C, Al, Cu and Pb) of the cross sections has also been studied. Further, the cross sections of π and K productions were measured.

Original language	English
Pages (from-to)	115-140
Number of pages	26
Journal	Nuclear Physics A
Volume	634
Issue number	1-2
DOIs	https://doi.org/10.1016/S0375-9474(98)00122-5
State	Published - 4 May 1998
Externally published	Yes

Keywords

Antiproton production
Kaon production
Light-ion induced reaction
Pion production
Subthreshold

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10.1016/S0375-9474(98)00122-5

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Sugaya, Y., Ashery, D., Chiba, J., Ito, H., Kimura, K., Kiselev, Y. T., Kouda, S., Miyano, K., Murakami, T., Murata, J., Nagae, T., Nakai, Y., Nomachi, M., Numajiri, M., Ochiishi, H., Sawada, S., Sekimoto, M., Shibata, T., Suzuki, T., ... Yoshimura, Y. (1998). Subthreshold antiproton production in pA, dA and αA reactions. Nuclear Physics A, 634(1-2), 115-140. https://doi.org/10.1016/S0375-9474(98)00122-5

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title = "Subthreshold antiproton production in pA, dA and αA reactions",

abstract = "An enormous enhancement of antiproton production in deuteron-and α-induced reactions has been observed in the subthreshold energy region between 2 and 5 GeV/nucleon. Antiprotons produced at 5.1° with a momentum range of between 1.0 and 2.5 GeV/c were measured by a beam-line spectrometer and identified by the time-of-flight method. The production cross sections in the deuteron-and α-induced reactions at an incident energy of 3.5 GeV/nucleon were 2 and 3 orders of magnitude larger than those in proton-induced reaction at the same energy. The enhancement in light-ion reactions could not be explained by the internal motion in the projectile and target nuclei. The target-mass dependence (C, Al, Cu and Pb) of the cross sections has also been studied. Further, the cross sections of π and K productions were measured.",

keywords = "Antiproton production, Kaon production, Light-ion induced reaction, Pion production, Subthreshold",

author = "Y. Sugaya and D. Ashery and J. Chiba and H. Ito and K. Kimura and Kiselev, {Yu T.} and S. Kouda and K. Miyano and T. Murakami and J. Murata and T. Nagae and Y. Nakai and M. Nomachi and M. Numajiri and H. Ochiishi and S. Sawada and M. Sekimoto and T. Shibata and T. Suzuki and Tanaka, {K. H.} and Vlasov, {M. K.} and Y. Yamanoi and K. Yasuda and Y. Yoshimura",

year = "1998",

month = may,

day = "4",

doi = "10.1016/S0375-9474(98)00122-5",

language = "אנגלית",

volume = "634",

pages = "115--140",

journal = "Nuclear Physics A",

issn = "0375-9474",

publisher = "Elsevier",

number = "1-2",

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Sugaya, Y, Ashery, D, Chiba, J, Ito, H, Kimura, K, Kiselev, YT, Kouda, S, Miyano, K, Murakami, T, Murata, J, Nagae, T, Nakai, Y, Nomachi, M, Numajiri, M, Ochiishi, H, Sawada, S, Sekimoto, M, Shibata, T, Suzuki, T, Tanaka, KH, Vlasov, MK, Yamanoi, Y, Yasuda, K & Yoshimura, Y 1998, 'Subthreshold antiproton production in pA, dA and αA reactions', Nuclear Physics A, vol. 634, no. 1-2, pp. 115-140. https://doi.org/10.1016/S0375-9474(98)00122-5

TY - JOUR

T1 - Subthreshold antiproton production in pA, dA and αA reactions

AU - Sugaya, Y.

AU - Ashery, D.

AU - Chiba, J.

AU - Ito, H.

AU - Kimura, K.

AU - Kiselev, Yu T.

AU - Kouda, S.

AU - Miyano, K.

AU - Murakami, T.

AU - Murata, J.

AU - Nagae, T.

AU - Nakai, Y.

AU - Nomachi, M.

AU - Numajiri, M.

AU - Ochiishi, H.

AU - Sawada, S.

AU - Sekimoto, M.

AU - Shibata, T.

AU - Suzuki, T.

AU - Tanaka, K. H.

AU - Vlasov, M. K.

AU - Yamanoi, Y.

AU - Yasuda, K.

AU - Yoshimura, Y.

PY - 1998/5/4

Y1 - 1998/5/4

N2 - An enormous enhancement of antiproton production in deuteron-and α-induced reactions has been observed in the subthreshold energy region between 2 and 5 GeV/nucleon. Antiprotons produced at 5.1° with a momentum range of between 1.0 and 2.5 GeV/c were measured by a beam-line spectrometer and identified by the time-of-flight method. The production cross sections in the deuteron-and α-induced reactions at an incident energy of 3.5 GeV/nucleon were 2 and 3 orders of magnitude larger than those in proton-induced reaction at the same energy. The enhancement in light-ion reactions could not be explained by the internal motion in the projectile and target nuclei. The target-mass dependence (C, Al, Cu and Pb) of the cross sections has also been studied. Further, the cross sections of π and K productions were measured.

AB - An enormous enhancement of antiproton production in deuteron-and α-induced reactions has been observed in the subthreshold energy region between 2 and 5 GeV/nucleon. Antiprotons produced at 5.1° with a momentum range of between 1.0 and 2.5 GeV/c were measured by a beam-line spectrometer and identified by the time-of-flight method. The production cross sections in the deuteron-and α-induced reactions at an incident energy of 3.5 GeV/nucleon were 2 and 3 orders of magnitude larger than those in proton-induced reaction at the same energy. The enhancement in light-ion reactions could not be explained by the internal motion in the projectile and target nuclei. The target-mass dependence (C, Al, Cu and Pb) of the cross sections has also been studied. Further, the cross sections of π and K productions were measured.

KW - Antiproton production

KW - Kaon production

KW - Light-ion induced reaction

KW - Pion production

KW - Subthreshold

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DO - 10.1016/S0375-9474(98)00122-5

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AN - SCOPUS:0032481925

SN - 0375-9474

VL - 634

SP - 115

EP - 140

JO - Nuclear Physics A

JF - Nuclear Physics A

IS - 1-2

ER -

Subthreshold antiproton production in pA, dA and αA reactions

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Keywords

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