Effective pion mass in the nuclear medium deduced from deeply bound pionic states in 207Pb

T. Yamazaki; R. S. Hayano; K. Itahashi; K. Oyama; A. Gillitzer; H. Gilg; M. Knülle; M. Münch; P. Kienle; W. Schott; W. Weise; H. Geissel; N. Iwasa; G. Münzenberg; S. Hirenzaki; H. Toki

doi:10.1016/S0370-2693(97)01408-1

Effective pion mass in the nuclear medium deduced from deeply bound pionic states in ²⁰⁷Pb

T. Yamazaki, R. S. Hayano, K. Itahashi, K. Oyama, A. Gillitzer, H. Gilg, M. Knülle, M. Münch, P. Kienle, W. Schott, W. Weise, H. Geissel, N. Iwasa, G. Münzenberg, S. Hirenzaki, H. Toki

SCI - Physics

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Abstract

Deeply bound Is states of π^- as well as the 2p states in ²⁰⁷Pb were identified in the ²⁰⁸Pb(d,³He) reaction at 600 MeV. The binding energies of π^- in ²⁰⁷Pb have been determined as S_π(2p) = 5.31 ± 0.09 MeV and B_π(1s) = 7.1 ± 0.2 MeV by comparing the observed Q-value spectrum with theory. These values indicate that the effective π^- mass increases by 19.3 ± 2.7 MeV at the center of the ²⁰⁷Pb nucleus.

Original language	English
Pages (from-to)	246-251
Number of pages	6
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	418
Issue number	3-4
DOIs	https://doi.org/10.1016/S0370-2693(97)01408-1
Publication status	Published - 1998 Feb 5

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Yamazaki, T., Hayano, R. S., Itahashi, K., Oyama, K., Gillitzer, A., Gilg, H., Knülle, M., Münch, M., Kienle, P., Schott, W., Weise, W., Geissel, H., Iwasa, N., Münzenberg, G., Hirenzaki, S., & Toki, H. (1998). Effective pion mass in the nuclear medium deduced from deeply bound pionic states in ²⁰⁷Pb. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 418(3-4), 246-251. https://doi.org/10.1016/S0370-2693(97)01408-1

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title = "Effective pion mass in the nuclear medium deduced from deeply bound pionic states in 207Pb",

abstract = "Deeply bound Is states of π- as well as the 2p states in 207Pb were identified in the 208Pb(d,3He) reaction at 600 MeV. The binding energies of π- in 207Pb have been determined as Sπ(2p) = 5.31 ± 0.09 MeV and Bπ(1s) = 7.1 ± 0.2 MeV by comparing the observed Q-value spectrum with theory. These values indicate that the effective π- mass increases by 19.3 ± 2.7 MeV at the center of the 207Pb nucleus.",

author = "T. Yamazaki and Hayano, {R. S.} and K. Itahashi and K. Oyama and A. Gillitzer and H. Gilg and M. Kn{\"u}lle and M. M{\"u}nch and P. Kienle and W. Schott and W. Weise and H. Geissel and N. Iwasa and G. M{\"u}nzenberg and S. Hirenzaki and H. Toki",

note = "Funding Information: The authors would like to thank Professors Y. Nambu and T. Ericson for their interest and stimulating discussions. This work is supported by the Grant-in-Aid for Specially Promoted Research and for International Scientific Research of Monbusho (Japan) and by the Bundesministerium f{\"u}r Bildung, Wissenschaft, Forschung und Technologie (Germany).",

year = "1998",

month = feb,

day = "5",

doi = "10.1016/S0370-2693(97)01408-1",

language = "English",

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journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

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Yamazaki, T, Hayano, RS, Itahashi, K, Oyama, K, Gillitzer, A, Gilg, H, Knülle, M, Münch, M, Kienle, P, Schott, W, Weise, W, Geissel, H, Iwasa, N, Münzenberg, G, Hirenzaki, S & Toki, H 1998, 'Effective pion mass in the nuclear medium deduced from deeply bound pionic states in ²⁰⁷Pb', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 418, no. 3-4, pp. 246-251. https://doi.org/10.1016/S0370-2693(97)01408-1

TY - JOUR

T1 - Effective pion mass in the nuclear medium deduced from deeply bound pionic states in 207Pb

AU - Yamazaki, T.

AU - Hayano, R. S.

AU - Itahashi, K.

AU - Oyama, K.

AU - Gillitzer, A.

AU - Gilg, H.

AU - Knülle, M.

AU - Münch, M.

AU - Kienle, P.

AU - Schott, W.

AU - Weise, W.

AU - Geissel, H.

AU - Iwasa, N.

AU - Münzenberg, G.

AU - Hirenzaki, S.

AU - Toki, H.

N1 - Funding Information: The authors would like to thank Professors Y. Nambu and T. Ericson for their interest and stimulating discussions. This work is supported by the Grant-in-Aid for Specially Promoted Research and for International Scientific Research of Monbusho (Japan) and by the Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie (Germany).

PY - 1998/2/5

Y1 - 1998/2/5

N2 - Deeply bound Is states of π- as well as the 2p states in 207Pb were identified in the 208Pb(d,3He) reaction at 600 MeV. The binding energies of π- in 207Pb have been determined as Sπ(2p) = 5.31 ± 0.09 MeV and Bπ(1s) = 7.1 ± 0.2 MeV by comparing the observed Q-value spectrum with theory. These values indicate that the effective π- mass increases by 19.3 ± 2.7 MeV at the center of the 207Pb nucleus.

AB - Deeply bound Is states of π- as well as the 2p states in 207Pb were identified in the 208Pb(d,3He) reaction at 600 MeV. The binding energies of π- in 207Pb have been determined as Sπ(2p) = 5.31 ± 0.09 MeV and Bπ(1s) = 7.1 ± 0.2 MeV by comparing the observed Q-value spectrum with theory. These values indicate that the effective π- mass increases by 19.3 ± 2.7 MeV at the center of the 207Pb nucleus.

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U2 - 10.1016/S0370-2693(97)01408-1

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VL - 418

SP - 246

EP - 251

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 3-4

ER -

Effective pion mass in the nuclear medium deduced from deeply bound pionic states in ²⁰⁷Pb

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