Role of triangle singularity in the decay process D0 → π+ π- f0 (980), f0 → π+ π-

被引：1
|
作者：
He, Dazhuang [1 ]
Xie, Yiling [1 ]
Sun, Hao [1 ]
机构：
[1] Dalian Univ Technol, Inst Theoret Phys, Sch Phys, 2 Linggong Rd, Dalian 116024, Liaoning, Peoples R China
来源：
PHYSICAL REVIEW D | 2023年 / 107卷 / 09期
基金：
中国国家自然科学基金;
关键词：
LAMBDA(+)(C); F(0)(500); F(0)(980); MECHANISM; J/PSI; STATE; SIGMA;
D O I：
10.1103/PhysRevD.107.094040
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We study the process D-0 -> pi(+)-pi(-) f(0)(980), f(0 ->) pi(+) pi(-) by introducing the triangle mechanism, in which f(0)(980) is considered to be dynamically generated from the meson-meson interaction. For the total contribution of this process, the contribution of the triangular loop formed by K*(K) over barK particles could generate a triangular singularity of about 1418 MeV. We calculate the differential decay width of this process and show a narrow peak of about 980 M-eV in the pi(+)-pi(-) invariant mass distribution, which comes from f(0) decay. For the M-inv(pi f(0)) invariant mass distribution, we obtain a finite peak at 1418 MeV, which is consistent with the triangle singularity.
引用
收藏
页数：10
相关论文
共 50 条
  • [31] Role of the scalar f0(980) in the process D+s? +p0p0
    Zhang, Han
    Lyu, Yun-He
    Liu, Li-Juan
    Wang, En
    CHINESE PHYSICS C, 2023, 47 (04)
  • [32] a0(980)- f0(980) mixing in χc1 decay
    Bayar, M.
    Debastiani, V. R.
    MESON 2018 - 15TH INTERNATIONAL WORKSHOP ON MESON PHYSICS, 2019, 199
  • [33] a0(980)→γγ and f0(980)→γγ:: a consistent description
    Lucio, JL
    Napsuciale, M
    PHYSICS LETTERS B, 1999, 454 (3-4) : 365 - 368
  • [34] Interplay between the f0(980) and α0(980) mesons
    Gunter, J
    INTERSECTIONS BETWEEN PARTICLE AND NUCLEAR PHYSICS - 6TH CONFERENCE, 1997, (412): : 447 - 450
  • [35] Study of scalar meson f0(980) from B→f0(980)K* decays
    Zhi-Qing Zhang
    Jun-De Zhang
    The European Physical Journal C, 2010, 67 : 163 - 172
  • [36] Evidence of the four-quark nature of f0(980) and f0(500)
    Achasov, N. N.
    Bennett, J., V
    Kiselev, A., V
    Kozyrev, E. A.
    Shestakov, G. N.
    PHYSICAL REVIEW D, 2021, 103 (01)
  • [37] Study of scalar meson f0(980) from B → f0(980)K* decays
    Zhang, Zhi-Qing
    Zhang, Jun-De
    EUROPEAN PHYSICAL JOURNAL C, 2010, 67 (1-2): : 163 - 172
  • [38] Search for the decay Bs0 → (D)over-bar0 f0(980)
    Aaij, R.
    Adeva, B.
    Adinolfi, M.
    Affolder, A.
    Ajaltouni, Z.
    Akar, S.
    Albrecht, J.
    Alessio, F.
    Alexander, M.
    Ali, S.
    Alkhazov, G.
    Cartelle, P. Alvarez
    Alves, A. A., Jr.
    Amato, S.
    Amerio, S.
    Amhis, Y.
    An, L.
    Anderlini, L.
    Anderson, J.
    Andreotti, M.
    Andrews, J. E.
    Appleby, R. B.
    Gutierrez, O. Aquines
    Archilli, F.
    d'Argent, P.
    Artamonov, A.
    Artuso, M.
    Aslanides, E.
    Auriemma, G.
    Baalouch, M.
    Bachmann, S.
    Back, J. J.
    Badalov, A.
    Baesso, C.
    Baldini, W.
    Barlow, R. J.
    Barschel, C.
    Barsuk, S.
    Barter, W.
    Batozskaya, V.
    Battista, V.
    Bay, A.
    Beaucourt, L.
    Beddow, J.
    Bedeschi, F.
    Bediaga, I.
    Bel, L. J.
    Belyaev, I.
    Ben-Haim, E.
    Bencivenni, G.
    JOURNAL OF HIGH ENERGY PHYSICS, 2015, (08):
  • [39] Form factors in B→f0(980) and D. f0(980) transitions from dispersion relations
    El-Bennich, B.
    Leitner, O. M. A.
    Loiseau, B.
    INTERNATIONAL JOURNAL OF MODERN PHYSICS A, 2007, 22 (2-3): : 641 - 644
  • [40] B Meson Weak Decays to J/ψ - f0(500) (f0(980), ρ, ω, φ)
    Bayar, M.
    Liang, W. H.
    Oset, E.
    XVITH INTERNATIONAL CONFERENCE ON HADRON SPECTROSCOPY (HADRON2015), 2016, 1735
12345