Enhanced production of ΛΛ pairs near threshold in the (K-,K+) reaction on 12C

J. K. Ahn

Enhanced production of ΛΛ pairs near threshold in the (K^-,K⁺) reaction on ¹²C

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Abstract

Enhanced production of ΛΛ pairs, above the prediction of a two-step process model, is observed near threshold (around the masses of 2.23 - 2.26 GeV/c²) in the ¹²C(K^-,K⁺) reaction at p_K- = 1.66 GeV/c using a scintillating fiber target. The differential cross section for the ΛΛ production averaged over 2.3° ≤ θ_K+ ≤ 14.7° in the momentum region 0.95 ≤ p_K+ ≤ 1.3 GeV/c was found to be 7.6 ± 1.3 μb/sr, and that for the enhancement approximately 3 μb/sr.

Original language	English
Pages (from-to)	379c-384c
Journal	Nuclear Physics A
Volume	639
Issue number	1-2
Publication status	Published - 1998 Aug 24
Externally published	Yes

Bibliographical note

Funding Information:
We would like to thank the staff of the KEK proton synchrotron for their continuous support. We also thank Professor Y. Akaishi and Dr. A. Ohnishi for valuable discussions. This work was supported in part by a Grant-in-Aid for Scientific Research (02402008), the Ministry of Science, Culture and Education, Japan.

ASJC Scopus subject areas

Nuclear and High Energy Physics

Cite this

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title = "Enhanced production of ΛΛ pairs near threshold in the (K-,K+) reaction on 12C",

abstract = "Enhanced production of ΛΛ pairs, above the prediction of a two-step process model, is observed near threshold (around the masses of 2.23 - 2.26 GeV/c2) in the 12C(K-,K+) reaction at pK- = 1.66 GeV/c using a scintillating fiber target. The differential cross section for the ΛΛ production averaged over 2.3° ≤ θK+ ≤ 14.7° in the momentum region 0.95 ≤ pK+ ≤ 1.3 GeV/c was found to be 7.6 ± 1.3 μb/sr, and that for the enhancement approximately 3 μb/sr.",

author = "Ahn, {J. K.}",

note = "Funding Information: We would like to thank the staff of the KEK proton synchrotron for their continuous support. We also thank Professor Y. Akaishi and Dr. A. Ohnishi for valuable discussions. This work was supported in part by a Grant-in-Aid for Scientific Research (02402008), the Ministry of Science, Culture and Education, Japan.",

year = "1998",

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language = "English",

volume = "639",

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journal = "Nuclear Physics A",

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T1 - Enhanced production of ΛΛ pairs near threshold in the (K-,K+) reaction on 12C

AU - Ahn, J. K.

N1 - Funding Information: We would like to thank the staff of the KEK proton synchrotron for their continuous support. We also thank Professor Y. Akaishi and Dr. A. Ohnishi for valuable discussions. This work was supported in part by a Grant-in-Aid for Scientific Research (02402008), the Ministry of Science, Culture and Education, Japan.

PY - 1998/8/24

Y1 - 1998/8/24

N2 - Enhanced production of ΛΛ pairs, above the prediction of a two-step process model, is observed near threshold (around the masses of 2.23 - 2.26 GeV/c2) in the 12C(K-,K+) reaction at pK- = 1.66 GeV/c using a scintillating fiber target. The differential cross section for the ΛΛ production averaged over 2.3° ≤ θK+ ≤ 14.7° in the momentum region 0.95 ≤ pK+ ≤ 1.3 GeV/c was found to be 7.6 ± 1.3 μb/sr, and that for the enhancement approximately 3 μb/sr.

AB - Enhanced production of ΛΛ pairs, above the prediction of a two-step process model, is observed near threshold (around the masses of 2.23 - 2.26 GeV/c2) in the 12C(K-,K+) reaction at pK- = 1.66 GeV/c using a scintillating fiber target. The differential cross section for the ΛΛ production averaged over 2.3° ≤ θK+ ≤ 14.7° in the momentum region 0.95 ≤ pK+ ≤ 1.3 GeV/c was found to be 7.6 ± 1.3 μb/sr, and that for the enhancement approximately 3 μb/sr.

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M3 - Article

AN - SCOPUS:0032563422

SN - 0375-9474

VL - 639

SP - 379c-384c

JO - Nuclear Physics A

JF - Nuclear Physics A

IS - 1-2

ER -

Enhanced production of ΛΛ pairs near threshold in the (K^-,K⁺) reaction on ¹²C

Abstract

Bibliographical note

ASJC Scopus subject areas

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