\begin{document}$B_{4/2}=B(E2;4_1\rightarrow2_1)/B(E2;2_1\rightarrow0_1) <1.0$\end{document} and \begin{document}$R_{4/2}= E(4_1)/E(2_1)\geq2.0$\end{document}, which cannot yet be explained by any other microscopic nuclear models, naturally emerges in the present model due to the inclusion of triaxial rotor modes. This description is further extended to describe odd-A nuclei by including the coupling to the Fermion degree of freedom. This allows us to give a unified explanation of the anomalous \begin{document}$B(E2)$\end{document}strengths in both even-even and even-odd systems, which indicate different behaviors. As examples, the model is applied to describe the spectroscopy and \begin{document}$E2$\end{document} transition properties of \begin{document}$^{168,169,170,171}$\end{document}Os. All recent measurements of these isotopes can be well reproduced on the same footing, which suggests that the anomalous collectivity persists even in odd-A systems."> A novel approach for the anomalous collectivity in neutron-deficient Os isotopes -
  • [1]

    A. Bohr, and B. R. Mottelson,Nuclear Structure(Benjamin, New York), Vol. Ⅱ, 1975

  • [2]

    F. Iachello and A. Arima,The Interacting Boson Model(England: Cambridge University, 1987)

  • [3]

    Y. Zhang, Z. F. Hou, and Y. X. Liu, Sci. China-Phys. Mech. Astron.54, s88 (2011)

  • [4]

    H. B. Yang, Z. G. Gan, Y. J. Liet al., Phys. Rev. Lett.132, 072502 (2024)

  • [5]

    B. Cederwall, M. Doncel, Ö. Aktaset al., Phys. Rev. Lett.121, 022502 (2018)

  • [6]

    T. Grahn, S. Stolze, D. T. Josset al., Phys. Rev. C94, 044327 (2016)

  • [7]

    B. Sayǧı, D. T. Joss, R. D. Pageet al., Phys. Rev. C96, 021301 (2017)

  • [8]

    A. Goasduff, J. Ljungvall, T. R. Rodríguezet al., Phys. Rev. C100, 034302 (2019)

  • [9]

    W. Zhang, B. Cederwall, M. Doncelet al., Phys. Lett. B820, 136527 (2021)

  • [10]

    D. Bucurescu and N. V. Zamfir, Phys. Rev. C95, 014329 (2017)

  • [11]

    S. Quan, Z. P. Li, D. Vretenaret al., Phys. Rev. C97, 031301 (2018)

  • [12]

    B. Bally, B. Avez, M. Benderet al., Phys. Rev. Lett.113, 162501 (2014)

  • [13]

    M. Borrajo and J. L. Egido, Eur. Phys. J. A52, 277 (2016)

  • [14]

    K. Nomura, T. Nikšić, and D. Vretenar, Phys. Rev. C93, 054305 (2016)

  • [15]

    D. Hertz-Kintish, L. Zamick, and S. J. Q. Robinson, Phys. Rev. C90, 034307 (2014)

  • [16]

    C. Louchart, A. Obertelli, A. Görgenet al., Phys. Rev. C87, 054302 (2013)

  • [17]

    O. Möller, N. Warr, J. Jolieet al., Phys. Rev. C71, 064324 (2005)

  • [18]

    G. de Angelis, A. Gadea, E. Farnezet al., Phys. Lett. B535, 93 (2002)

  • [19]

    T. Otsuka, A. Arima, and F. Iachello, Nucl. Phys. A309, 1 (1978)

  • [20]

    D. D. Warner and R. F. Casten, Phys. Rev. C28, 1798 (1983)

  • [21]

    Y. Zhang, F. Pan, L. R. Daiet al., Phys. Rev. C90, 044310 (2014)

  • [22]

    Y. Zhang, Y. W. He, D. Karlssonet al., Phys. Lett. B834, 137443 (2022)

  • [23]

    Y. F. Smirnov, N. A. Smirnova, and P. Van Isacker, Phys. Rev. C61, 041302 (2000)

  • [24]

    Y. Leschber and J. P. Draayer, Phys. Lett. B190, 1 (1987)

  • [25]

    O. Castaños, J. P. Draayer, and Y. Leschber, Z. Phys. A329, 33 (1988)

  • [26]

    T. Wang, Europhys. Lett.129, 52001 (2020)

  • [27]

    Y. Zhang, F. Pan, Y. X. Liuet al., Phys. Rev. C85, 064312 (2012)

  • [28]

    L. Fortunato, C. E. Alonso, J. M. Ariaset al., Phys. Rev. C84, 014326 (2011)

  • [29]

    V. K. B. Kota,SU(3) Symmetry in Atomic Nuclei(Springer, Singapore, 2020)

  • [30]

    P. Van Isacker and J. Q. Chen, Phys. Rev. C24, 684 (1981)

  • [31]

    K. Heyde, P. Van Isacker, M. Waroquieret al., Phys. Rev. C29, 1420 (1984)

  • [32]

    B. Sorgunlu and P. Van Isacker, Nucl. Phys. A808, 27 (2008)

  • [33]

    R. F. Casten, P. Von Brentano, K. Heydeet al., Nucl. Phys. A439, 289 (1985)

  • [34]

    J. E. García-Ramos, C. E. Alonso, J. M. Ariaset al., Phys. Rev. C61, 047305 (2000)

  • [35]

    J. E. García-Ramos, J. M. Arias, and P. Van Isacker, Phys. Rev. C62, 064309 (2000)

  • [36]

    K. Nomura, N. Shimizu, D. Vretenaret al., Phys. Rev. Lett.108, 132501 (2012)

  • [37]

    G. Vanden Berghe, H. E. De Meyer, and P. Van Isacker, Phys. Rev. C32, 1049 (1985)

  • [38]

    J. Vanthournout, H. E. De Meyer, and G. Vanden Berghe, Phys. Rev. C38, 414 (1988)

  • [39]

    W. Teng, S. N. Wang, Y. Zhanget al., Phys. Scr.99, 015305 (2024)

  • [40]

    A. S. Davydov and G. F. Filippov, Nucl. Phys.8, 237 (1958)

  • [41]

    J. M. Allmond, R. Zaballa, A M. Oros-Peusquenset al., Phys. Rev. C78, 014302 (2008)

  • [42]

    S. Frauendorf and J. Meng, Nucl. Phys. A617, 131 (1997)

  • [43]

    B. Qi, H. Jia, C. Liuet al., China-Phys. Mech. Astron.62, 012012 (2019)

  • [44]

    Y. Zhang, B. Qi, and S. Q. Zhang, Sci. China-Phys. Mech. Astron.64, 122011 (2021)

  • [45]

    F. Iachello and P. Van Isacker,The Interacting Boson-Fermion Model(England: Cambridge University, 1991)

  • [46]

    O. Scholten, Prog. Part. Nucl. Phys.14, 189 (1985)

  • [47]

    F. Iachello, A. Leviatan, and D. Petrellis, Phys. Lett. B705, 379 (2011)

  • [48]

    K. Nomura, T. Nikšić, and D. Vretenar, Phys. Rev. C96, 014304 (2017)

  • [49]

    K. Nomura, R. Rodríguez-Guzmán, and L. M Robledo, Phys. Rev. C97, 064314 (2019)

  • [50]

    R. Rodríguez-Guzmán, P. Sarriguren, L. M. Robledoet al., Phys. Rev. C81, 024310 (2010)

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