In-medium modifications of the ω meson near the production threshold

M. Thiel; V. Metag; P. Aguar Bartolome; L. K. Akasoy; J. R.M. Annand; H. J. Arends; K. Bantawa; R. Beck; V. Bekrenev; H. Berghäuser; A. Braghieri; W. J. Briscoe; J. Brudvik; S. Cherepnya; M. Dieterle; E. J. Downie; P. Drexler; L. V. Fil'kov; S. Friedrich; D. I. Glazier; R. Gregor; E. Heid; D. Hornidge; O. Jahn; T. C. Jude; V. L. Kashevarov; I. Keshelashvili; R. Kondratiev; M. Korolija; M. Kotulla; B. Krusche; A. Kulbardis; B. Lemmer; V. Lisin; K. Livingston; S. Lugert; I. J.D. MacGregor; Y. Maghrbi; J. Mancell; D. M. Manley; M. Martinez; J. C. McGeorge; E. F. McNicoll; D. G. Middleton; A. Mushkarenkov; M. Nanova; B. M.K. Nefkens; A. Nikolaev; R. W. Novotny; M. Ostrick; P. Pedroni; F. Pheron; A. Polonski; S. N. Prakhov; J. Robinson; G. Rosner; T. Rostomyan; S. Schumann; M. H. Sikora; A. Starostin; I. Supek; A. Thomas; M. Unverzagt; D. P. Watts; J. Weil; D. Werthmüller; I. Zamboni

doi:10.1140/epja/i2013-13132-6

In-medium modifications of the ω meson near the production threshold

M. Thiel^*, V. Metag, P. Aguar Bartolome, L. K. Akasoy, J. R.M. Annand, H. J. Arends, K. Bantawa, R. Beck, V. Bekrenev, H. Berghäuser, A. Braghieri, W. J. Briscoe, J. Brudvik, S. Cherepnya, M. Dieterle, E. J. Downie, P. Drexler, L. V. Fil'kov, S. Friedrich, D. I. GlazierR. Gregor, E. Heid, D. Hornidge, O. Jahn, T. C. Jude, V. L. Kashevarov, I. Keshelashvili, R. Kondratiev, M. Korolija, M. Kotulla, B. Krusche, A. Kulbardis, B. Lemmer, V. Lisin, K. Livingston, S. Lugert, I. J.D. MacGregor, Y. Maghrbi, J. Mancell, D. M. Manley, M. Martinez, J. C. McGeorge, E. F. McNicoll, D. G. Middleton, A. Mushkarenkov, M. Nanova, B. M.K. Nefkens, A. Nikolaev, R. W. Novotny, M. Ostrick, P. Pedroni, F. Pheron, A. Polonski, S. N. Prakhov, J. Robinson, G. Rosner, T. Rostomyan, S. Schumann, M. H. Sikora, A. Starostin, I. Supek, A. Thomas, M. Unverzagt, D. P. Watts, J. Weil, D. Werthmüller, I. Zamboni

^*Corresponding author for this work

Physics

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

Abstract

The in-medium properties of the ω meson were investigated at the MAMI-C electron accelerator using the Crystal Ball/TAPS detector system to identify ω mesons through their ω → π⁰γ decay channel. Two solid targets (C, Nb) and a LH₂ target as a reference have been used. In the energy range 900 to 1300 MeV the ω lineshapes for the different nuclei are compared and a broadening of the ω signal for the niobium target is observed in comparison to the liquid-hydrogen target. In a second analysis the ω momentum distributions for the solid targets are determined for 50 MeV/c wide bins. For both analyses a comparison to transport calculations shows that the data are consistent with an in-medium modification by collisional broadening, as observed by transparency ratio measurements.

Original language	English
Article number	132
Pages (from-to)	1-13
Number of pages	13
Journal	European Physical Journal A
Volume	49
Issue number	10
DOIs	https://doi.org/10.1140/epja/i2013-13132-6
Publication status	Published - 1 Jan 2013

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10.1140/epja/i2013-13132-6

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Thiel, M., Metag, V., Aguar Bartolome, P., Akasoy, L. K., Annand, J. R. M., Arends, H. J., Bantawa, K., Beck, R., Bekrenev, V., Berghäuser, H., Braghieri, A., Briscoe, W. J., Brudvik, J., Cherepnya, S., Dieterle, M., Downie, E. J., Drexler, P., Fil'kov, L. V., Friedrich, S., ... Zamboni, I. (2013). In-medium modifications of the ω meson near the production threshold. European Physical Journal A, 49(10), 1-13. Article 132. https://doi.org/10.1140/epja/i2013-13132-6

@article{c25907ac9163495aa29566aed1249c27,

title = "In-medium modifications of the ω meson near the production threshold",

abstract = "The in-medium properties of the ω meson were investigated at the MAMI-C electron accelerator using the Crystal Ball/TAPS detector system to identify ω mesons through their ω → π0γ decay channel. Two solid targets (C, Nb) and a LH2 target as a reference have been used. In the energy range 900 to 1300 MeV the ω lineshapes for the different nuclei are compared and a broadening of the ω signal for the niobium target is observed in comparison to the liquid-hydrogen target. In a second analysis the ω momentum distributions for the solid targets are determined for 50 MeV/c wide bins. For both analyses a comparison to transport calculations shows that the data are consistent with an in-medium modification by collisional broadening, as observed by transparency ratio measurements.",

author = "M. Thiel and V. Metag and {Aguar Bartolome}, P. and Akasoy, {L. K.} and Annand, {J. R.M.} and Arends, {H. J.} and K. Bantawa and R. Beck and V. Bekrenev and H. Bergh{\"a}user and A. Braghieri and Briscoe, {W. J.} and J. Brudvik and S. Cherepnya and M. Dieterle and Downie, {E. J.} and P. Drexler and Fil'kov, {L. V.} and S. Friedrich and Glazier, {D. I.} and R. Gregor and E. Heid and D. Hornidge and O. Jahn and Jude, {T. C.} and Kashevarov, {V. L.} and I. Keshelashvili and R. Kondratiev and M. Korolija and M. Kotulla and B. Krusche and A. Kulbardis and B. Lemmer and V. Lisin and K. Livingston and S. Lugert and MacGregor, {I. J.D.} and Y. Maghrbi and J. Mancell and Manley, {D. M.} and M. Martinez and McGeorge, {J. C.} and McNicoll, {E. F.} and Middleton, {D. G.} and A. Mushkarenkov and M. Nanova and Nefkens, {B. M.K.} and A. Nikolaev and Novotny, {R. W.} and M. Ostrick and P. Pedroni and F. Pheron and A. Polonski and Prakhov, {S. N.} and J. Robinson and G. Rosner and T. Rostomyan and S. Schumann and Sikora, {M. H.} and A. Starostin and I. Supek and A. Thomas and M. Unverzagt and Watts, {D. P.} and J. Weil and D. Werthm{\"u}ller and I. Zamboni",

year = "2013",

month = jan,

day = "1",

doi = "10.1140/epja/i2013-13132-6",

language = "English",

volume = "49",

pages = "1--13",

journal = "European Physical Journal A",

issn = "1434-6001",

publisher = "Springer",

number = "10",

}

Thiel, M, Metag, V, Aguar Bartolome, P, Akasoy, LK, Annand, JRM, Arends, HJ, Bantawa, K, Beck, R, Bekrenev, V, Berghäuser, H, Braghieri, A, Briscoe, WJ, Brudvik, J, Cherepnya, S, Dieterle, M, Downie, EJ, Drexler, P, Fil'kov, LV, Friedrich, S, Glazier, DI, Gregor, R, Heid, E, Hornidge, D, Jahn, O, Jude, TC, Kashevarov, VL, Keshelashvili, I, Kondratiev, R, Korolija, M, Kotulla, M, Krusche, B, Kulbardis, A, Lemmer, B, Lisin, V, Livingston, K, Lugert, S, MacGregor, IJD, Maghrbi, Y, Mancell, J, Manley, DM, Martinez, M, McGeorge, JC, McNicoll, EF, Middleton, DG, Mushkarenkov, A, Nanova, M, Nefkens, BMK, Nikolaev, A, Novotny, RW, Ostrick, M, Pedroni, P, Pheron, F, Polonski, A, Prakhov, SN, Robinson, J, Rosner, G, Rostomyan, T, Schumann, S, Sikora, MH, Starostin, A, Supek, I, Thomas, A, Unverzagt, M, Watts, DP, Weil, J, Werthmüller, D & Zamboni, I 2013, 'In-medium modifications of the ω meson near the production threshold', European Physical Journal A, vol. 49, no. 10, 132, pp. 1-13. https://doi.org/10.1140/epja/i2013-13132-6

TY - JOUR

T1 - In-medium modifications of the ω meson near the production threshold

AU - Thiel, M.

AU - Metag, V.

AU - Aguar Bartolome, P.

AU - Akasoy, L. K.

AU - Annand, J. R.M.

AU - Arends, H. J.

AU - Bantawa, K.

AU - Beck, R.

AU - Bekrenev, V.

AU - Berghäuser, H.

AU - Braghieri, A.

AU - Briscoe, W. J.

AU - Brudvik, J.

AU - Cherepnya, S.

AU - Dieterle, M.

AU - Downie, E. J.

AU - Drexler, P.

AU - Fil'kov, L. V.

AU - Friedrich, S.

AU - Glazier, D. I.

AU - Gregor, R.

AU - Heid, E.

AU - Hornidge, D.

AU - Jahn, O.

AU - Jude, T. C.

AU - Kashevarov, V. L.

AU - Keshelashvili, I.

AU - Kondratiev, R.

AU - Korolija, M.

AU - Kotulla, M.

AU - Krusche, B.

AU - Kulbardis, A.

AU - Lemmer, B.

AU - Lisin, V.

AU - Livingston, K.

AU - Lugert, S.

AU - MacGregor, I. J.D.

AU - Maghrbi, Y.

AU - Mancell, J.

AU - Manley, D. M.

AU - Martinez, M.

AU - McGeorge, J. C.

AU - McNicoll, E. F.

AU - Middleton, D. G.

AU - Mushkarenkov, A.

AU - Nanova, M.

AU - Nefkens, B. M.K.

AU - Nikolaev, A.

AU - Novotny, R. W.

AU - Ostrick, M.

AU - Pedroni, P.

AU - Pheron, F.

AU - Polonski, A.

AU - Prakhov, S. N.

AU - Robinson, J.

AU - Rosner, G.

AU - Rostomyan, T.

AU - Schumann, S.

AU - Sikora, M. H.

AU - Starostin, A.

AU - Supek, I.

AU - Thomas, A.

AU - Unverzagt, M.

AU - Watts, D. P.

AU - Weil, J.

AU - Werthmüller, D.

AU - Zamboni, I.

PY - 2013/1/1

Y1 - 2013/1/1

N2 - The in-medium properties of the ω meson were investigated at the MAMI-C electron accelerator using the Crystal Ball/TAPS detector system to identify ω mesons through their ω → π0γ decay channel. Two solid targets (C, Nb) and a LH2 target as a reference have been used. In the energy range 900 to 1300 MeV the ω lineshapes for the different nuclei are compared and a broadening of the ω signal for the niobium target is observed in comparison to the liquid-hydrogen target. In a second analysis the ω momentum distributions for the solid targets are determined for 50 MeV/c wide bins. For both analyses a comparison to transport calculations shows that the data are consistent with an in-medium modification by collisional broadening, as observed by transparency ratio measurements.

AB - The in-medium properties of the ω meson were investigated at the MAMI-C electron accelerator using the Crystal Ball/TAPS detector system to identify ω mesons through their ω → π0γ decay channel. Two solid targets (C, Nb) and a LH2 target as a reference have been used. In the energy range 900 to 1300 MeV the ω lineshapes for the different nuclei are compared and a broadening of the ω signal for the niobium target is observed in comparison to the liquid-hydrogen target. In a second analysis the ω momentum distributions for the solid targets are determined for 50 MeV/c wide bins. For both analyses a comparison to transport calculations shows that the data are consistent with an in-medium modification by collisional broadening, as observed by transparency ratio measurements.

UR - http://www.scopus.com/inward/record.url?scp=84891498686&partnerID=8YFLogxK

U2 - 10.1140/epja/i2013-13132-6

DO - 10.1140/epja/i2013-13132-6

M3 - Article

AN - SCOPUS:84891498686

SN - 1434-6001

VL - 49

SP - 1

EP - 13

JO - European Physical Journal A

JF - European Physical Journal A

IS - 10

M1 - 132

ER -

In-medium modifications of the ω meson near the production threshold

Abstract

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