Measurement of invariant mass spectra of vector meson decaying in nuclear matter

M. Naruki; J. Chiba; H. En'yo; H. Funahashi; H. Hamagaki; M. Ieiri; M. Ishino; H. Kanda; M. Kitaguchi; S. Mihara; T. Miyashita; T. Murakami; R. Muto; M. Nomachi; K. Ozawa; F. Sakuma; O. Sasaki; H. D. Sato; M. Sekimoto; T. Tabaru; K. H. Tanaka; S. Yamada; S. Yokkaichi; Y. Yoshimura

doi:10.1016/S0375-9474(03)01054-6

Measurement of invariant mass spectra of vector meson decaying in nuclear matter

M. Naruki, J. Chiba, H. En'yo, H. Funahashi, H. Hamagaki, M. Ieiri, M. Ishino, H. Kanda, M. Kitaguchi, S. Mihara, T. Miyashita, T. Murakami, R. Muto, M. Nomachi, K. Ozawa, F. Sakuma, O. Sasaki, H. D. Sato, M. Sekimoto, T. TabaruK. H. Tanaka, S. Yamada, S. Yokkaichi, Y. Yoshimura

SCI - Physics

Research output: Contribution to journal › Article

2 Citations (Scopus)

Abstract

The experiment E325 has been performed at KEK PS. The data taking has been completed on February 2002. We have measured the invariant mass spectrum of e⁺e^-pairs based on the statistics 100 times larger than our previous publication[3]. On the low-mass side of ρ/ω meson, an enhancement over the known hadronic sources has been observed. The obtained ρ/ω ratio in the spectrum is smaller than the ratio in pp interaction. This suggests that ρ meson mass has been modified in nuclear matter.

Original language	English
Pages (from-to)	C297-C300
Journal	Nuclear Physics A
Volume	721
DOIs	https://doi.org/10.1016/S0375-9474(03)01054-6
Publication status	Published - 2003 Jun 30

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/S0375-9474(03)01054-6

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Naruki, M., Chiba, J., En'yo, H., Funahashi, H., Hamagaki, H., Ieiri, M., Ishino, M., Kanda, H., Kitaguchi, M., Mihara, S., Miyashita, T., Murakami, T., Muto, R., Nomachi, M., Ozawa, K., Sakuma, F., Sasaki, O., Sato, H. D., Sekimoto, M., ... Yoshimura, Y. (2003). Measurement of invariant mass spectra of vector meson decaying in nuclear matter. Nuclear Physics A, 721, C297-C300. https://doi.org/10.1016/S0375-9474(03)01054-6

Measurement of invariant mass spectra of vector meson decaying in nuclear matter. / Naruki, M.; Chiba, J.; En'yo, H.; Funahashi, H.; Hamagaki, H.; Ieiri, M.; Ishino, M.; Kanda, H.; Kitaguchi, M.; Mihara, S.; Miyashita, T.; Murakami, T.; Muto, R.; Nomachi, M.; Ozawa, K.; Sakuma, F.; Sasaki, O.; Sato, H. D.; Sekimoto, M.; Tabaru, T.; Tanaka, K. H.; Yamada, S.; Yokkaichi, S.; Yoshimura, Y.

In: Nuclear Physics A, Vol. 721, 30.06.2003, p. C297-C300.

Research output: Contribution to journal › Article

Naruki, M, Chiba, J, En'yo, H, Funahashi, H, Hamagaki, H, Ieiri, M, Ishino, M, Kanda, H, Kitaguchi, M, Mihara, S, Miyashita, T, Murakami, T, Muto, R, Nomachi, M, Ozawa, K, Sakuma, F, Sasaki, O, Sato, HD, Sekimoto, M, Tabaru, T, Tanaka, KH, Yamada, S, Yokkaichi, S & Yoshimura, Y 2003, 'Measurement of invariant mass spectra of vector meson decaying in nuclear matter', Nuclear Physics A, vol. 721, pp. C297-C300. https://doi.org/10.1016/S0375-9474(03)01054-6

Naruki, M. ; Chiba, J. ; En'yo, H. ; Funahashi, H. ; Hamagaki, H. ; Ieiri, M. ; Ishino, M. ; Kanda, H. ; Kitaguchi, M. ; Mihara, S. ; Miyashita, T. ; Murakami, T. ; Muto, R. ; Nomachi, M. ; Ozawa, K. ; Sakuma, F. ; Sasaki, O. ; Sato, H. D. ; Sekimoto, M. ; Tabaru, T. ; Tanaka, K. H. ; Yamada, S. ; Yokkaichi, S. ; Yoshimura, Y. / Measurement of invariant mass spectra of vector meson decaying in nuclear matter. In: Nuclear Physics A. 2003 ; Vol. 721. pp. C297-C300.

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abstract = "The experiment E325 has been performed at KEK PS. The data taking has been completed on February 2002. We have measured the invariant mass spectrum of e+e-pairs based on the statistics 100 times larger than our previous publication[3]. On the low-mass side of ρ/ω meson, an enhancement over the known hadronic sources has been observed. The obtained ρ/ω ratio in the spectrum is smaller than the ratio in pp interaction. This suggests that ρ meson mass has been modified in nuclear matter.",

author = "M. Naruki and J. Chiba and H. En'yo and H. Funahashi and H. Hamagaki and M. Ieiri and M. Ishino and H. Kanda and M. Kitaguchi and S. Mihara and T. Miyashita and T. Murakami and R. Muto and M. Nomachi and K. Ozawa and F. Sakuma and O. Sasaki and Sato, {H. D.} and M. Sekimoto and T. Tabaru and Tanaka, {K. H.} and S. Yamada and S. Yokkaichi and Y. Yoshimura",

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T1 - Measurement of invariant mass spectra of vector meson decaying in nuclear matter

AU - Naruki, M.

AU - Chiba, J.

AU - En'yo, H.

AU - Funahashi, H.

AU - Hamagaki, H.

AU - Ieiri, M.

AU - Ishino, M.

AU - Kanda, H.

AU - Kitaguchi, M.

AU - Mihara, S.

AU - Miyashita, T.

AU - Murakami, T.

AU - Muto, R.

AU - Nomachi, M.

AU - Ozawa, K.

AU - Sakuma, F.

AU - Sasaki, O.

AU - Sato, H. D.

AU - Sekimoto, M.

AU - Tabaru, T.

AU - Tanaka, K. H.

AU - Yamada, S.

AU - Yokkaichi, S.

AU - Yoshimura, Y.

PY - 2003/6/30

Y1 - 2003/6/30

N2 - The experiment E325 has been performed at KEK PS. The data taking has been completed on February 2002. We have measured the invariant mass spectrum of e+e-pairs based on the statistics 100 times larger than our previous publication[3]. On the low-mass side of ρ/ω meson, an enhancement over the known hadronic sources has been observed. The obtained ρ/ω ratio in the spectrum is smaller than the ratio in pp interaction. This suggests that ρ meson mass has been modified in nuclear matter.

AB - The experiment E325 has been performed at KEK PS. The data taking has been completed on February 2002. We have measured the invariant mass spectrum of e+e-pairs based on the statistics 100 times larger than our previous publication[3]. On the low-mass side of ρ/ω meson, an enhancement over the known hadronic sources has been observed. The obtained ρ/ω ratio in the spectrum is smaller than the ratio in pp interaction. This suggests that ρ meson mass has been modified in nuclear matter.

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