Triangle singularity as the origin of X0(2900) and X1(2900) observed in <mml:msup>B+</mml:msup>→<mml:msup>D+</mml:msup><mml:msup>D-</mml:msup><mml:msup>K+</mml:msup>

被引：0
|
作者：
Liu, Xiao-Hai [1 ]
Yan, Mao-Jun [2 ]
Ke, Hong-Wei [1 ]
Li, Gang [3 ]
Xie, Ju-Jun [4 ,5 ,6 ]
机构：
[1] Tianjin Univ, Sch Sci, Dept Phys, Tianjin 300350, Peoples R China
[2] Beihang Univ, Sch Phys, Beijing 100191, Peoples R China
[3] Qufu Normal Univ, Coll Phys & Engn, Qufu 273165, Shandong, Peoples R China
[4] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
[5] Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 101408, Peoples R China
[6] Zhengzhou Univ, Sch Phys & Microelect, Zhengzhou 450001, Henan, Peoples R China
来源：
EUROPEAN PHYSICAL JOURNAL C | 2020年 / 80卷 / 12期
基金：
中国国家自然科学基金;
关键词：
23;
D O I：
10.1140/epjc/s10052-020-08762-6
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
The LHCb collaboration recently reported the observation of a narrow peak in the D-K+ invariant mass distributions from the B+-> D+D-K+ decay. The peak is parameterized in terms of two resonances X0(2900) and X1(2900) with the quark contents c<overbar></mml:mover>s<overbar></mml:mover>ud, and their spin-parity quantum numbers are 0+ and 1-, respectively. We investigate the rescattering processes which may contribute to the B+-> D+D-K+ decays. It is shown that the D-K+ rescattering via the chi c1K+D- loop and the D<overbar></mml:mover>10</mml:msubsup>K0 rescattering via the DsJ+</mml:msubsup>D<overbar></mml:mover>10K0 loop can simulate the <mml:msub>X0<mml:mo stretchy="false">(2900<mml:mo stretchy="false">) and <mml:msub>X1<mml:mo stretchy="false">(2900<mml:mo stretchy="false">) with consistent quantum numbers. Such phenomena are due to the analytical property of the scattering amplitudes with the triangle singularities located to the vicinity of the physical boundary.
引用
收藏
页数：5
相关论文
共 50 条
  • [1] Hunting for <mml:msup>B+</mml:msup>→<mml:msup>K+</mml:msup><mml:msup>τ+</mml:msup><mml:msup>τ-</mml:msup> imprints on the <mml:msup>B+</mml:msup>→<mml:msup>K+</mml:msup><mml:msup>μ+</mml:msup><mml:msup>μ-</mml:msup> dimuon spectrum
    Cornella, C.
    Isidori, G.
    Konig, M.
    Liechti, S.
    Owen, P.
    Serra, N.
    [J]. EUROPEAN PHYSICAL JOURNAL C, 2020, 80 (12):
  • [2] Triangle singularity in <mml:msup>B-</mml:msup>→<mml:msup>K-</mml:msup>X(3872);X→<mml:msup>π0</mml:msup><mml:msup>π+</mml:msup><mml:msup>π-</mml:msup> and the X(3872) mass
    Molina, Raquel
    Oset, Eulogio
    [J]. EUROPEAN PHYSICAL JOURNAL C, 2020, 80 (05):
  • [3] A theoretical analysis of the semileptonic decays <mml:msup>η(′)</mml:msup>→<mml:msup>π0</mml:msup><mml:msup>l+</mml:msup><mml:msup>l-</mml:msup> and <mml:msup>η′</mml:msup>→η<mml:msup>l+</mml:msup><mml:msup>l-</mml:msup>
    Escribano, Rafel
    Royo, Emilio
    [J]. EUROPEAN PHYSICAL JOURNAL C, 2020, 80 (12):
  • [4] Measurement of the <mml:msup>e+</mml:msup><mml:msup>e-</mml:msup>→<mml:msup>K+</mml:msup><mml:msup>K-</mml:msup><mml:msup>π0</mml:msup> cross section with the SND detector: The SND Collaboration
    Achasov, M. N.
    Barnyakov, A. Yu.
    Barnyakov, M. Yu.
    Baykov, A. A.
    Beloborodov, K. I.
    Berdyugin, A. V.
    Berkaev, D. E.
    Bogdanchikov, A. G.
    Botov, A. A.
    Buzykaev, A. R.
    Dimova, T. V.
    Druzhinin, V. P.
    Golubev, V. B.
    Kardapoltsev, L. V.
    Kharlamov, A. G.
    Korol, A. A.
    Kovrizhin, D. P.
    Kravchenko, E. A.
    Kupich, A. S.
    Lysenko, A. P.
    Martin, K. A.
    Muchnoy, N. Yu.
    Melnikova, N. A.
    Obrazovsky, A. E.
    Onuchin, A. P.
    Pakhtusova, E. V.
    Perevedentsev, E. A.
    Pugachev, K. V.
    Savchenko, Y. S.
    Serednyakov, S. I.
    Shatunov, P. Yu.
    Shatunov, Yu. M.
    Shtol, D. A.
    Shwartz, D. B.
    Silagadze, Z. K.
    Surin, I. K.
    Tikhonov, Yu. A.
    Usov, Yu. V.
    Zemlyansky, I. M.
    Zhabin, V. N.
    Zhulanov, V. V.
    [J]. EUROPEAN PHYSICAL JOURNAL C, 2020, 80 (12):
  • [5] Role of scalar a0(980) in the single Cabibbo suppressed process <mml:msup>D+</mml:msup>→<mml:msup>π+</mml:msup><mml:msup>π0</mml:msup>η
    Duan, Man-Yu
    Wang, Jun-Ya
    Wang, Guan-Ying
    Wang, En
    Li, De-Min
    [J]. EUROPEAN PHYSICAL JOURNAL C, 2020, 80 (11):
  • [6] Study of dynamics of the process <mml:msup>e+</mml:msup><mml:msup>e-</mml:msup>→<mml:msup>π+</mml:msup><mml:msup>π-</mml:msup><mml:msup>π0</mml:msup> in the energy range 1.15-2.00 GeV: SND Collaboration
    Achasov, M. N.
    Barnyakov, A. Yu.
    Baykov, A. A.
    Beloborodov, K. I.
    Berdyugin, A. V.
    Berkaev, D. E.
    Bogdanchikov, A. G.
    Botov, A. A.
    Dimova, T. V.
    Druzhinin, V. P.
    Golubev, V. B.
    Kirpotin, A. N.
    Kardapoltsev, L. V.
    Kasaev, A. S.
    Kharlamov, A. G.
    Koop, I. A.
    Korol, A. A.
    Kovrizhin, D. P.
    Kupich, A. S.
    Martin, K. A.
    Melnikova, N. A.
    Muchnoy, N. Yu.
    Obrazovsky, A. E.
    Pakhtusova, E. V.
    Pugachev, K. V.
    Rabusov, D. V.
    Rogovsky, Yu. A.
    Savchenko, Y. S.
    Senchenko, A. I.
    Serednyakov, S. I.
    Shatilov, D. N.
    Shatunov, Yu. M.
    Shtol, D. A.
    Shwartz, D. B.
    Silagadze, Z. K.
    Surin, I. K.
    Timoshenko, M. V.
    Usov, Yu. V.
    Zhabin, V. N.
    Zhulanov, V. V.
    [J]. EUROPEAN PHYSICAL JOURNAL C, 2020, 80 (10):
  • [7] Measurement of exclusive <mml:msup>π+</mml:msup><mml:msup>π-</mml:msup> and <mml:msup>ρ0</mml:msup> meson photoproduction at HERA: H1 Collaboration
    Andreev, V.
    Baty, A.
    Baghdasaryan, A.
    Begzsuren, K.
    Belousov, A.
    Bolz, A.
    Boudry, V
    Brandt, G.
    Britzger, D.
    Buniatyan, A.
    Bystritskaya, L.
    Campbell, A. J.
    Avila, K. B. Cantun
    Cerny, K.
    Chekelian, V
    Chen, Z.
    Contreras, J. G.
    Cvach, J.
    Dainton, J. B.
    Daum, K.
    Deshpande, A.
    Diaconu, C.
    Eckerlin, G.
    Egli, S.
    Elsen, E.
    Favart, L.
    Fedotov, A.
    Feltesse, J.
    Fleischer, M.
    Fomenko, A.
    Gal, C.
    Gayler, J.
    Goerlich, L.
    Gogitidze, N.
    Gouzevitch, M.
    Grab, C.
    Grebenyuk, A.
    Greenshaw, T.
    Grindhammer, G.
    Haidt, D.
    Henderson, R. C. W.
    Hladky, J.
    Hoffmann, D.
    Horisberger, R.
    Hreus, T.
    Huber, F.
    Jacquet, M.
    Janssen, X.
    Jung, A. W.
    Jung, H.
    [J]. EUROPEAN PHYSICAL JOURNAL C, 2020, 80 (12):
  • [8] Coupled channel analysis of p<overbar></mml:mover>p<mml:mspace width="0.166667em"></mml:mspace>→<mml:mspace width="0.166667em"></mml:mspace><mml:msup>π0</mml:msup><mml:msup>π0</mml:msup>η, <mml:msup>π0</mml:msup>ηη and <mml:msup>K+</mml:msup><mml:msup>K<mml:mo>-</mml:msup><mml:msup>π0</mml:msup> at 900 MeV/c and of ππ-scattering data: The Crystal Barrel Collaboration
    Albrecht, M.
    Amsler, C.
    Duennweber, W.
    Faessler, M. A.
    Heinsius, F. H.
    Koch, H.
    Kopf, B.
    Kurilla, U.
    Meyer, C. A.
    Peters, K.
    Pychy, J.
    Qin, X.
    Steinke, M.
    Wiedner, U.
    [J]. EUROPEAN PHYSICAL JOURNAL C, 2020, 80 (05):
  • [9] Canonical interpretations of the newly observed Ξc<mml:msup>(2923)0</mml:msup>, Ξc<mml:msup>(2939)0</mml:msup>, and Ξc<mml:msup>(2965)0</mml:msup> resonances
    Lu, Qi-Fang
    [J]. EUROPEAN PHYSICAL JOURNAL C, 2020, 80 (10):
  • [10] QED exponentiation for quasi-stable charged particles: the <mml:msup>e-</mml:msup><mml:msup>e+</mml:msup>→<mml:msup>W-</mml:msup><mml:msup>W+</mml:msup> process
    Jadach, S.
    Placzek, W.
    Skrzypek, M.
    [J]. EUROPEAN PHYSICAL JOURNAL C, 2020, 80 (06):
12345