@article{a5ef1465b62d4597823dbe6c17a54a16,
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",
volume = "418",
pages = "246--251",
journal = "Physics Letters B",
issn = "0370-2693",
publisher = "Elsevier B.V.",
number = "3-4",
}