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Unexpectedly enhanced $$alpha$$-particle preformation in $$^{48}$$Ti probed by the ($$p$$,$$palpha$$) reaction

Taniguchi, Yasutaka*; Yoshida, Kazuki  ; Chiba, Yohei*; Kanada-En'yo, Yoshiko*; Kimura, Masaaki*; Ogata, Kazuyuki*

Based on the $$^{48}$$Ti($$p$$,$$palpha$$)$$^{44}$$Ca reaction analysis, this study reports that $$alpha$$-particle formation in the medium-mass $$^{48}$$Ti nucleus is pronounced more compared to that expected through mean-field approximations. Moreover, the estimated average distance between the $$alpha$$ particle and residue equals approximately 4.5 fm. This result poses a challenge to describe the four nucleon correlations using microscopic nuclear models.

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Category:Physics, Nuclear

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