Probing ΛΛ potential

C. J. Yoon; H. Akikawa; K. Aoki; Y. Fukao; H. Funahashi; M. Hayata; K. Imai; K. Miwa; H. Okada; N. Saito; H. D. Sato; K. Shoji; H. Takahashi; K. Taketani; J. Asai; M. Kurosawa; M. Ieiri; T. Hayakawa; T. Kishimoto; A. Sato; Y. Shimizu; K. Yamamoto; T. Yoshida; T. Hibi; K. Nakazawa; J. K. Ahn; B. H. Choi; S. J. Kim; S. H. Kim; B. D. Park; I. G. Park; J. S. Song; C. S. Yoon; K. Tanida; A. Ohnishi

doi:10.3938/jkps.59.1003

Probing ΛΛ potential

C. J. Yoon, H. Akikawa, K. Aoki, Y. Fukao, H. Funahashi, M. Hayata, K. Imai, K. Miwa, H. Okada, N. Saito, H. D. Sato, K. Shoji, H. Takahashi, K. Taketani, J. Asai, M. Kurosawa, M. Ieiri, T. Hayakawa, T. Kishimoto, A. SatoY. Shimizu, K. Yamamoto, T. Yoshida, T. Hibi, K. Nakazawa, J. K. Ahn, B. H. Choi, S. J. Kim, S. H. Kim, B. D. Park, I. G. Park, J. S. Song, C. S. Yoon, K. Tanida, A. Ohnishi

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

Abstract

We determined scattering length and effective range of ΛΛ scattering for the ΛΛ relative energy (MΛΛ-2MΛ) from ΛΛ threshold to 30 MeV/c². Phase shift of the ΛΛ wave function which described by scattering length and effective range was determined by fitting the ΛΛ mass spectrum. The obtained scattering length -0.10^+1.37_-1.56± 0.04, and effective range 13.90^+0.37_-9.13± 10.53, fm is the most consistent with the values predicted by using a series of the Nijmegen soft core models NSC97's. However the predicted values by using the Nijmegen hard core model ND (G-matrix), the extended soft core model ESC00, and the Kyoto-Niigata FSS are out of three standard deviations from the determined scattering parameters. Further, we determine ΛΛ potential by fitting the ΛΛ invariant mass spectrum using numerically solved ΛΛ wave function with two-Gaussian shaped potential well. The ΛΛ scattering parameters derived from the wave function are found to be scattering length -0.09, and effective range 29.34 fm with a maximum hase shift of 2.4 deg.

Original language	English
Pages (from-to)	1003-1006
Number of pages	4
Journal	Journal of the Korean Physical Society
Volume	59
Issue number	23
DOIs	https://doi.org/10.3938/jkps.59.1003
Publication status	Published - 2011 Aug
Externally published	Yes

Keywords

Effective range
Interaction
Scattering length
ΛΛ

ASJC Scopus subject areas

General Physics and Astronomy

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10.3938/jkps.59.1003

Cite this

Yoon, C. J., Akikawa, H., Aoki, K., Fukao, Y., Funahashi, H., Hayata, M., Imai, K., Miwa, K., Okada, H., Saito, N., Sato, H. D., Shoji, K., Takahashi, H., Taketani, K., Asai, J., Kurosawa, M., Ieiri, M., Hayakawa, T., Kishimoto, T., ... Ohnishi, A. (2011). Probing ΛΛ potential. Journal of the Korean Physical Society, 59(23), 1003-1006. https://doi.org/10.3938/jkps.59.1003

Yoon, CJ, Akikawa, H, Aoki, K, Fukao, Y, Funahashi, H, Hayata, M, Imai, K, Miwa, K, Okada, H, Saito, N, Sato, HD, Shoji, K, Takahashi, H, Taketani, K, Asai, J, Kurosawa, M, Ieiri, M, Hayakawa, T, Kishimoto, T, Sato, A, Shimizu, Y, Yamamoto, K, Yoshida, T, Hibi, T, Nakazawa, K, Ahn, JK, Choi, BH, Kim, SJ, Kim, SH, Park, BD, Park, IG, Song, JS, Yoon, CS, Tanida, K & Ohnishi, A 2011, 'Probing ΛΛ potential', Journal of the Korean Physical Society, vol. 59, no. 23, pp. 1003-1006. https://doi.org/10.3938/jkps.59.1003

@article{c5a8b6910b78418ca172f8f366927a38,

title = "Probing ΛΛ potential",

abstract = "We determined scattering length and effective range of ΛΛ scattering for the ΛΛ relative energy (MΛΛ-2MΛ) from ΛΛ threshold to 30 MeV/c2. Phase shift of the ΛΛ wave function which described by scattering length and effective range was determined by fitting the ΛΛ mass spectrum. The obtained scattering length -0.10+1.37-1.56± 0.04, and effective range 13.90+0.37-9.13± 10.53, fm is the most consistent with the values predicted by using a series of the Nijmegen soft core models NSC97's. However the predicted values by using the Nijmegen hard core model ND (G-matrix), the extended soft core model ESC00, and the Kyoto-Niigata FSS are out of three standard deviations from the determined scattering parameters. Further, we determine ΛΛ potential by fitting the ΛΛ invariant mass spectrum using numerically solved ΛΛ wave function with two-Gaussian shaped potential well. The ΛΛ scattering parameters derived from the wave function are found to be scattering length -0.09, and effective range 29.34 fm with a maximum hase shift of 2.4 deg.",

keywords = "Effective range, Interaction, Scattering length, ΛΛ",

author = "Yoon, {C. J.} and H. Akikawa and K. Aoki and Y. Fukao and H. Funahashi and M. Hayata and K. Imai and K. Miwa and H. Okada and N. Saito and Sato, {H. D.} and K. Shoji and H. Takahashi and K. Taketani and J. Asai and M. Kurosawa and M. Ieiri and T. Hayakawa and T. Kishimoto and A. Sato and Y. Shimizu and K. Yamamoto and T. Yoshida and T. Hibi and K. Nakazawa and Ahn, {J. K.} and Choi, {B. H.} and Kim, {S. J.} and Kim, {S. H.} and Park, {B. D.} and Park, {I. G.} and Song, {J. S.} and Yoon, {C. S.} and K. Tanida and A. Ohnishi",

year = "2011",

month = aug,

doi = "10.3938/jkps.59.1003",

language = "English",

volume = "59",

pages = "1003--1006",

journal = "Journal of the Korean Physical Society",

issn = "0374-4884",

publisher = "Korean Physical Society",

number = "23",

}

TY - JOUR

T1 - Probing ΛΛ potential

AU - Yoon, C. J.

AU - Akikawa, H.

AU - Aoki, K.

AU - Fukao, Y.

AU - Funahashi, H.

AU - Hayata, M.

AU - Imai, K.

AU - Miwa, K.

AU - Okada, H.

AU - Saito, N.

AU - Sato, H. D.

AU - Shoji, K.

AU - Takahashi, H.

AU - Taketani, K.

AU - Asai, J.

AU - Kurosawa, M.

AU - Ieiri, M.

AU - Hayakawa, T.

AU - Kishimoto, T.

AU - Sato, A.

AU - Shimizu, Y.

AU - Yamamoto, K.

AU - Yoshida, T.

AU - Hibi, T.

AU - Nakazawa, K.

AU - Ahn, J. K.

AU - Choi, B. H.

AU - Kim, S. J.

AU - Kim, S. H.

AU - Park, B. D.

AU - Park, I. G.

AU - Song, J. S.

AU - Yoon, C. S.

AU - Tanida, K.

AU - Ohnishi, A.

PY - 2011/8

Y1 - 2011/8

N2 - We determined scattering length and effective range of ΛΛ scattering for the ΛΛ relative energy (MΛΛ-2MΛ) from ΛΛ threshold to 30 MeV/c2. Phase shift of the ΛΛ wave function which described by scattering length and effective range was determined by fitting the ΛΛ mass spectrum. The obtained scattering length -0.10+1.37-1.56± 0.04, and effective range 13.90+0.37-9.13± 10.53, fm is the most consistent with the values predicted by using a series of the Nijmegen soft core models NSC97's. However the predicted values by using the Nijmegen hard core model ND (G-matrix), the extended soft core model ESC00, and the Kyoto-Niigata FSS are out of three standard deviations from the determined scattering parameters. Further, we determine ΛΛ potential by fitting the ΛΛ invariant mass spectrum using numerically solved ΛΛ wave function with two-Gaussian shaped potential well. The ΛΛ scattering parameters derived from the wave function are found to be scattering length -0.09, and effective range 29.34 fm with a maximum hase shift of 2.4 deg.

AB - We determined scattering length and effective range of ΛΛ scattering for the ΛΛ relative energy (MΛΛ-2MΛ) from ΛΛ threshold to 30 MeV/c2. Phase shift of the ΛΛ wave function which described by scattering length and effective range was determined by fitting the ΛΛ mass spectrum. The obtained scattering length -0.10+1.37-1.56± 0.04, and effective range 13.90+0.37-9.13± 10.53, fm is the most consistent with the values predicted by using a series of the Nijmegen soft core models NSC97's. However the predicted values by using the Nijmegen hard core model ND (G-matrix), the extended soft core model ESC00, and the Kyoto-Niigata FSS are out of three standard deviations from the determined scattering parameters. Further, we determine ΛΛ potential by fitting the ΛΛ invariant mass spectrum using numerically solved ΛΛ wave function with two-Gaussian shaped potential well. The ΛΛ scattering parameters derived from the wave function are found to be scattering length -0.09, and effective range 29.34 fm with a maximum hase shift of 2.4 deg.

KW - Effective range

KW - Interaction

KW - Scattering length

KW - ΛΛ

UR - http://www.scopus.com/inward/record.url?scp=80052226350&partnerID=8YFLogxK

U2 - 10.3938/jkps.59.1003

DO - 10.3938/jkps.59.1003

M3 - Article

AN - SCOPUS:80052226350

SN - 0374-4884

VL - 59

SP - 1003

EP - 1006

JO - Journal of the Korean Physical Society

JF - Journal of the Korean Physical Society

IS - 23

ER -

Probing ΛΛ potential

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Keywords

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