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We study heavy hadron spectroscopy near heavy meson thresholds. We employ heavy pseudoscalar meson P and heavy vector meson P* as effective degrees of freedom and consider meson exchange potentials between them. All possible composite…

High Energy Physics - Phenomenology · Physics 2015-06-11 Shunsuke Ohkoda , Y. Yamaguchi , S. Yasui , K. Sudoh , A. Hosaka

We discuss the possibility and the description of bound states between $B$ and $\bar{B}^*$ mesons. We argue that the existence of such a bound state can be deduced from (i) the weakly bound X(3872) state, (ii) certain assumptions about the…

High Energy Physics - Phenomenology · Physics 2015-05-28 J. Nieves , M. Pavon Valderrama

A molecular model of the $P_c(4457)$ and $P_c(4440)$ LHCb states is proposed. The model relies on channels coupled by long range pion-exchange dynamics with features that depend crucially on the novel addition of the $\Lambda_c(2595)\bar D$…

High Energy Physics - Phenomenology · Physics 2019-12-25 T. J. Burns , E. S. Swanson

In this work, we systemically investigate the molecular states from the $\Sigma^{(*)}_c\bar{D}^{(*)}-\Lambda_c\bar{D}^{(*)}$ interaction with the help of the Lagrangians with heavy quark and chiral symmetries in a quasipotential…

High Energy Physics - Phenomenology · Physics 2020-01-08 Jun He , Dian-Yong Chen

We explore molecular states of two open heavy-quark mesons (Q qbar)-(qbar Q) in a quark-based model in terms of a four-body non-relativistic Hamiltonian with pairwise effective interactions. Molecular states are found in the combinations of…

High Energy Physics - Phenomenology · Physics 2008-11-26 Cheuk-Yin Wong

As a result of continuous developments, the recent experimental searches lead to the observations of new particles at different hadronic channels. Among these hadrons are the excited states of the heavy baryons containing single bottom or…

High Energy Physics - Phenomenology · Physics 2020-08-12 K. Azizi , Y. Sarac , H. Sundu

Recently, the LHCb Collaboration reported pronounced structures in the invariant mass spectrum of $J/\psi$-pairs produced in proton-proton collisions at the Large Hadron Collider. In this Letter, we argue that the data can be very well…

High Energy Physics - Phenomenology · Physics 2021-08-17 Xiang-Kun Dong , Vadim Baru , Feng-Kun Guo , Christoph Hanhart , Alexey Nefediev

We study the three-body systems of $\bar{K}^{(*)}B^{(*)}\bar{B}^{(*)}$ by solving the Faddeev equations in the fixed-center approximation, where the light particle $\bar{K}^{(*)}$ interacts with the heavy bound states of $B\bar{B}$…

High Energy Physics - Phenomenology · Physics 2019-06-05 Xiu-Lei Ren , Zhi-Feng Sun

We perform a systematic study of the possible molecular states composed of a pair of heavy mesons such as $D\bar D$, $D^\ast\bar D$, $D^\ast \bar D^\ast$ in the framework of the meson exchange model. The exchanged mesons include the…

High Energy Physics - Phenomenology · Physics 2009-05-26 Xiang Liu , Zhi-Gang Luo , Yan-Rui Liu , Shi-Lin Zhu

The developments in the experimental facilities and analyses techniques have recently lead to the observation of many hadronic states ranging from excitations of conventional hadrons to various exotic states. The baryons with single heavy…

High Energy Physics - Phenomenology · Physics 2022-10-17 K. Azizi , Y. Sarac , H. Sundu

We investigate the hypernuclear cluster states of $_\Lambda^{12}\mathrm{B}$ using a neural-network-driven microscopic model. We extend the Control Neural Networks (Ctrl.NN) method and systematically calculate the positive-parity spectrum of…

The most recent experimental data for all measured production and decay channels of the bottomonium-like states $Z_b(10610)$ and $Z_b(10650)$ are analysed simultaneously using solutions of the Lippmann-Schwinger equations which respect…

High Energy Physics - Phenomenology · Physics 2018-10-26 Q. Wang , V. Baru , A. A. Filin , C. Hanhart , A. V. Nefediev , J. -L. Wynen

Recently, a hint for dibaryon $N\Delta(D_{21})$ was observed at WASA-AT-COSY with a mass about $30\pm10$ MeV below the $N\Delta$ threshold. It has a relatively small binding energy compared with the $d^*(2380)$ and a width close to the…

Nuclear Theory · Physics 2020-10-21 Zhi-Tao Lu , Han-Yu Jiang , Jun He

Recently, scientists have made great progresses in experiments in searching for the excited states of $\Xi_{b}$ and $\Lambda_{b}$ baryons such as the $\Lambda_{b}(6072)$, $\Lambda_{b}(6146)$, $\Lambda_{b}(6152)$, $\Xi_{b}(6227)$,…

High Energy Physics - Phenomenology · Physics 2023-04-14 Guo-Liang Yu , Zhi-Gang Wang , Xiu-Wu Wang

We study heavy baryons with an exotic flavor quantum number formed by a heavy meson and a nucleon (Dbar-N and B-N) through a long range one pion exchange interaction. The bound state found previously in the (I,JP) =(0,1/2-) channel survives…

High Energy Physics - Phenomenology · Physics 2011-08-11 Yasuhiro Yamaguchi , Shunsuke Ohkoda , Shigehiro Yasui , Atsushi Hosaka

Possible $\Lambda_c\Lambda_c$ hadronic molecule is investigated in the one-pion-exchange potential model. In the study with this model, the heavier meson exchange effects are encoded into a phenomenological cutoff parameter and couplings to…

High Energy Physics - Phenomenology · Physics 2012-01-17 Wakafumi Meguro , Yan-Rui Liu , Makoto Oka

The existence of hadronic molecular-type hybrids consisting of a baryon and a meson is argued. Long-range interactions due to one-pion exchange is shown to be strong enough to produce a loosely bound state. Specific features of a molecular…

High Energy Physics - Phenomenology · Physics 2016-09-01 M. Shmatikov

Some charmonium-like resonances such as X(3872) can be interpreted as possible $D^{(*)}D^{(*)}$ molecular states. Within the quark model, we study the structure of such molecular states and the similar $B^{(*)}B^{(*)}$ molecular states by…

High Energy Physics - Phenomenology · Physics 2015-05-27 Si-Hai Yu , Bao-Kai Wang , Wei-Zhen Deng , Xiao-Lin Chen

In this work, we preform a systematic investigation about hidden heavy and doubly heavy molecular states from the $D^{(*)}\bar{D}^{(*)}/B^{(*)}\bar{B}^{(*)}$ and $D^{(*)}D^{(*)}/\bar{B}^{(*)}\bar{B}^{(*)}$ interactions in the quasipotential…

High Energy Physics - Phenomenology · Physics 2021-10-27 Zuo-Ming Ding , Han-Yu Jiang , Jun He

With the chiral unitary approach, we evaluate the hidden strange $B_{c}$-like molecular states of $b\bar{c}s\bar{s}$ systems $\bar{B}_{s}\bar{D}_{s}$, $\bar{B}_{s}^{*}\bar{D}_{s}$, $\bar{B}_{s}\bar{D}_{s}^{*}$, and…

High Energy Physics - Phenomenology · Physics 2023-07-11 Zhong-Yu Wang , Zhi-Feng Sun