In-medium [Formula Presented] spectral function study via the [Formula Presented] reaction

G. M. Huber; G. J. Lolos; Z. Papandreou; A. Shinozaki; E. J. Brash; M. Iurescu; G. Garino; K. Maruyama; K. Maeda; T. Suda; A. Toyofuku; B. K. Jennings; A. Sasaki; H. Yamashita

doi:10.1103/PhysRevC.68.065202

In-medium [Formula Presented] spectral function study via the [Formula Presented] reaction

G. M. Huber, G. J. Lolos, Z. Papandreou, A. Shinozaki, E. J. Brash, M. Iurescu, G. Garino, K. Maruyama, K. Maeda, T. Suda, A. Toyofuku, B. K. Jennings, A. Sasaki, H. Yamashita

Research Center for Electron Photon Science (ELPH)

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

Abstract

We report a helicity analysis of subthreshold [Formula Presented] production on [Formula Presented], and [Formula Presented] at low photoproduction energies. The results are indicative of a large longitudinal [Formula Presented] polarization [Formula Presented] and are consistent with a strong helicity-flip production mechanism. This signature is used to extract in-medium [Formula Presented] invariant mass distributions for all three nuclei in a manner which is less model dependent than previous measurements. The results are compared to kinematic and phenomenological models of the [Formula Presented] spectral function. The [Formula Presented] and [Formula Presented] data distributions support the role of [Formula Presented] excitation in shaping the in-medium [Formula Presented] invariant mass distribution, while the [Formula Presented] distributions are consistent with quasi-free [Formula Presented] production. The data support an in-medium modification of the [Formula Presented] invariant mass distribution.

Original language	English
Pages (from-to)	27
Number of pages	1
Journal	Physical Review C - Nuclear Physics
Volume	68
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevC.68.065202
Publication status	Published - 2003

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Huber, G. M., Lolos, G. J., Papandreou, Z., Shinozaki, A., Brash, E. J., Iurescu, M., Garino, G., Maruyama, K., Maeda, K., Suda, T., Toyofuku, A., Jennings, B. K., Sasaki, A., & Yamashita, H. (2003). In-medium [Formula Presented] spectral function study via the [Formula Presented] reaction. Physical Review C - Nuclear Physics, 68(6), 27. https://doi.org/10.1103/PhysRevC.68.065202

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title = "In-medium [Formula Presented] spectral function study via the [Formula Presented] reaction",

abstract = "We report a helicity analysis of subthreshold [Formula Presented] production on [Formula Presented], and [Formula Presented] at low photoproduction energies. The results are indicative of a large longitudinal [Formula Presented] polarization [Formula Presented] and are consistent with a strong helicity-flip production mechanism. This signature is used to extract in-medium [Formula Presented] invariant mass distributions for all three nuclei in a manner which is less model dependent than previous measurements. The results are compared to kinematic and phenomenological models of the [Formula Presented] spectral function. The [Formula Presented] and [Formula Presented] data distributions support the role of [Formula Presented] excitation in shaping the in-medium [Formula Presented] invariant mass distribution, while the [Formula Presented] distributions are consistent with quasi-free [Formula Presented] production. The data support an in-medium modification of the [Formula Presented] invariant mass distribution.",

author = "Huber, {G. M.} and Lolos, {G. J.} and Z. Papandreou and A. Shinozaki and Brash, {E. J.} and M. Iurescu and G. Garino and K. Maruyama and K. Maeda and T. Suda and A. Toyofuku and Jennings, {B. K.} and A. Sasaki and H. Yamashita",

year = "2003",

doi = "10.1103/PhysRevC.68.065202",

language = "English",

volume = "68",

pages = "27",

journal = "Physical Review C - Nuclear Physics",

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publisher = "American Physical Society",

number = "6",

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Huber, GM, Lolos, GJ, Papandreou, Z, Shinozaki, A, Brash, EJ, Iurescu, M, Garino, G, Maruyama, K, Maeda, K, Suda, T, Toyofuku, A, Jennings, BK, Sasaki, A & Yamashita, H 2003, 'In-medium [Formula Presented] spectral function study via the [Formula Presented] reaction', Physical Review C - Nuclear Physics, vol. 68, no. 6, pp. 27. https://doi.org/10.1103/PhysRevC.68.065202

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T1 - In-medium [Formula Presented] spectral function study via the [Formula Presented] reaction

AU - Huber, G. M.

AU - Lolos, G. J.

AU - Papandreou, Z.

AU - Shinozaki, A.

AU - Brash, E. J.

AU - Iurescu, M.

AU - Garino, G.

AU - Maruyama, K.

AU - Maeda, K.

AU - Suda, T.

AU - Toyofuku, A.

AU - Jennings, B. K.

AU - Sasaki, A.

AU - Yamashita, H.

PY - 2003

Y1 - 2003

N2 - We report a helicity analysis of subthreshold [Formula Presented] production on [Formula Presented], and [Formula Presented] at low photoproduction energies. The results are indicative of a large longitudinal [Formula Presented] polarization [Formula Presented] and are consistent with a strong helicity-flip production mechanism. This signature is used to extract in-medium [Formula Presented] invariant mass distributions for all three nuclei in a manner which is less model dependent than previous measurements. The results are compared to kinematic and phenomenological models of the [Formula Presented] spectral function. The [Formula Presented] and [Formula Presented] data distributions support the role of [Formula Presented] excitation in shaping the in-medium [Formula Presented] invariant mass distribution, while the [Formula Presented] distributions are consistent with quasi-free [Formula Presented] production. The data support an in-medium modification of the [Formula Presented] invariant mass distribution.

AB - We report a helicity analysis of subthreshold [Formula Presented] production on [Formula Presented], and [Formula Presented] at low photoproduction energies. The results are indicative of a large longitudinal [Formula Presented] polarization [Formula Presented] and are consistent with a strong helicity-flip production mechanism. This signature is used to extract in-medium [Formula Presented] invariant mass distributions for all three nuclei in a manner which is less model dependent than previous measurements. The results are compared to kinematic and phenomenological models of the [Formula Presented] spectral function. The [Formula Presented] and [Formula Presented] data distributions support the role of [Formula Presented] excitation in shaping the in-medium [Formula Presented] invariant mass distribution, while the [Formula Presented] distributions are consistent with quasi-free [Formula Presented] production. The data support an in-medium modification of the [Formula Presented] invariant mass distribution.

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In-medium [Formula Presented] spectral function study via the [Formula Presented] reaction

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