Name: 强子物理新发展研讨会
Start: 2020-04-24T08:50:00+08:00
End: 2020-04-26T18:00:00+08:00
Location: Online

强子物理新发展研讨会

from Friday, 24 April 2020 (08:50) to Sunday, 26 April 2020 (18:00)

Monday, 20 April 2020
Tuesday, 21 April 2020
Wednesday, 22 April 2020
Thursday, 23 April 2020
Friday, 24 April 2020

08:50 会议开幕
会议开幕
08:50 - 09:00
09:00 BESIII上超子物理及其CP破坏实验研究进展 - Hai-Bo Li (IHEP)
BESIII上超子物理及其CP破坏实验研究进展
- Hai-Bo Li (IHEP)
09:00 - 09:45
The CKM mechanism for CP violation in the Standard Model (SM) fails to explain the matter-antimatter asymmetry of the Universe by more than 10 orders-of-magnitude. This suggests that additional CP violating processes occur, and motivates aggressive searches for new, non-SM sources of CP violation. To date, CP violation in hyperon decays have never been observed. Standard Model CP violations in hyperon decays are expected to be ∼ 10^-4 to 10^-5, and any value higher than this level would be a signature of new, beyond the SM physics. Currently BESIII has collected about 10 billion J/psi decay events, the decay rate of J/psi to hyperon-anti-hyperon pairs are 10^-3, which indicates that the produced hyperon pairs will be a few millions. In this talk I will present the first observation of transverse polarization of hyperon-anti-hyperon from the e+e- --> J/psi --> hyperon-anti-hyperon pairs, which allows us to measure the decay asymmetry parameters of both hyperon and anti-hyperon, therefore CP asymmetry in the hyperon decay can be precisely obtained with 5 dimensional fit to data. We expect that the study of hyperon physics will be the next frontier of the SM CP searches.
09:50 Belle实验上奇异粲介子对系统的研究 - 森贾 (Beihang University)
Belle实验上奇异粲介子对系统的研究
- 森贾 (Beihang University)
09:50 - 10:35
Belle实验上奇异粲介子对系统的研究
10:40 The newly observered Omega(2012) as a KbarXi(1530) hadronic molecule - 聚军谢 (中国科学院近代物理研究所)
The newly observered Omega(2012) as a KbarXi(1530) hadronic molecule
- 聚军谢 (中国科学院近代物理研究所)
10:40 - 11:25
Recently, Belle collaboration measured the ratios of the branching fractions of the newly observed $\Omega(2012)$ excited state. They did not observe significant signals for the $\Omega(2012) \to \bar{K} \Xi^*(1530) \to \bar{K} \pi \Xi$ decay, and reported an upper limit for the ratio of the three body decay to the two body decay mode of $\Omega(2012) \to \bar{K} \Xi$. In this work, we revisit the newly observed $\Omega(2012)$ from the molecular perspective where this resonance appears to be a dynamically generated state with spin-parity $3/2^-$ from the coupled channels interactions of the $\bar{K} \Xi^*(1530)$ and $\eta \Omega$ in $s$-wave and $\bar{K} \Xi$ in $d$-wave. With the model parameters for the $d$-wave interaction, we show that the ratio of these decay fractions reported recently by the Belle collaboration can be easily accommodated.
14:30 Why DSEs? - 雷常 (Nankai University)
Why DSEs?
- 雷常 (Nankai University)
14:30 - 15:15
Why DSEs?
15:20 Hadron Structure on the Light-front - Xingbo Zhao (Iowa State University)
Hadron Structure on the Light-front
- Xingbo Zhao (Iowa State University)
15:20 - 16:05
In this talk I will report our recent progress on the structure of light mesons, heavy quarkonia and the nucleon studied in a basis light-front approach. I will present the preliminary results on the observables such as the form factors, the parton distribution function and the generalized parton distribution functions of these systems.
16:10 Dibaryons and pentaquarks in quark models - Hongxia Huang (Nanjing Normal University)
Dibaryons and pentaquarks in quark models
- Hongxia Huang (Nanjing Normal University)
16:10 - 16:55
Dibaryons and pentaquarks in quark models
Saturday, 25 April 2020
09:00 BESIII实验上的粲强子衰变研究 - Xiao-Rui Lyu (University of Chinese Academy of Sciences)
BESIII实验上的粲强子衰变研究
- Xiao-Rui Lyu (University of Chinese Academy of Sciences)
09:00 - 09:45
BESIII实验上的粲强子衰变研究
09:50 Recent results on hadron spectroscopy at LHCb - Liming Zhang (Tsinghua University)
Recent results on hadron spectroscopy at LHCb
- Liming Zhang (Tsinghua University)
09:50 - 10:35
I will present several new results on observations of excited baryons at LHCb
10:40 Decay properties of molecular states - 殿勇陈 (东南大学)
Decay properties of molecular states
- 殿勇陈 (东南大学)
10:40 - 11:25
Decay properties of molecular states
14:30 ssss四夸克态 - Hua-Xing Chen (Beihang University)
ssss四夸克态
- Hua-Xing Chen (Beihang University)
14:30 - 15:15
本次报告准备介绍我们使用QCD求和规则研究ssss四夸克强子态的一些情况。在研究工作中，我们构造了所有可能的试探流，然后考虑了这些试探流的混合，得到的结果和相关实验进行了比较。
15:20 Solution to the Y problem - 俊璋王 (Lanzhou University)
Solution to the Y problem
- 俊璋王 (Lanzhou University)
15:20 - 16:05
Solution to the Y problem
16:10 1-+奇特态 - 相坤董 (UCAS)
1-+奇特态
- 相坤董 (UCAS)
16:10 - 16:55
1-+奇特态
Sunday, 26 April 2020
09:00 Jetomography of QGP in heavy-ion collisions - Xin-Nian Wang (Central China Normal University/Lawrence Berkeley National Laboratory)
Jetomography of QGP in heavy-ion collisions
- Xin-Nian Wang (Central China Normal University/Lawrence Berkeley National Laboratory)
09:00 - 09:45
Jetomography of QGP in heavy-ion collisions
09:50 BESIII上的超子极化研究 - Rong-Gang Ping (高能所)
BESIII上的超子极化研究
- Rong-Gang Ping (高能所)
09:50 - 10:35
BESIII上的超子极化研究
10:40 DDK 3-body system in Lattice QCD - Jin-Yi Pang (University of Shanghai Science and Techology)
DDK 3-body system in Lattice QCD
- Jin-Yi Pang (University of Shanghai Science and Techology)
10:40 - 11:25
The lattice QCD simulation has been generating 3-body hadron spectrum already. The finite volume analysis is necessary to translate these lattice spectra in a finite volume to physical information in the infinite volume. Based on non-relativistic effective field theory, we show the preliminary result of lattice spectrum for DDK 3-body system. In the work, the 2-body information is input referring to arXiv:1906.11995. And 3-body bound state predicted by arXiv:1906.11995 is reproduced in effective field theory. The lattice spectra both below and above threshold are given. They can be compared with future lattice 3-body simulation.
14:30 Lattice calculation of hadron structure: parton distribution functions - Wei Wang (Shanghai JiaoTong University)
Lattice calculation of hadron structure: parton distribution functions
- Wei Wang (Shanghai JiaoTong University)
14:30 - 15:15
In this talk, I will introduce the new method of using Lattice QCD to simulate the Parton distribution functions.
15:20 Identifying the $\Sigma_b(6097)$, $\Xi_b(6227)$ and $\Omega_b$ as P-wave bottom baryons - Er-Liang Cui (Northwest A&F University)
Identifying the $\Sigma_b(6097)$, $\Xi_b(6227)$ and $\Omega_b$ as P-wave bottom baryons
- Er-Liang Cui (Northwest A&F University)
15:20 - 16:05
In this talk, I would like to report our recent studies on spectra and decay properties of the excited bottom baryons, $\Sigma_b(6097)$, $\Xi_b(6227)$ and four narrow $\Omega_b$ states, which were newly discovered by LHCb collaboration. At first, we calculated the spectra of P-wave bottom baryons by using the QCD sum rule. The estimations are well consistent with the experimental results. Then We also utilized the method of light−cone sum rules, which is widely used to study the hadron decays in recent years. Our estimations suggest that the bottom baryons $\Sigma_{b}(6097)^{\pm}$ and $\Xi_{b}(6227)^-$ both belong to the P−wave bottom baryon doublet $[\mathbf{6}{F},2,1,\lambda]$, whose color is symmetric $\mathbf{6}_{F}$, the total angular momentum of light system is 2, the spin of light system is 1, and it is $\lambda$−type excitation. And the four narrow $\Omega_b$ states can also be explained as the P-wave bottom baryons but belong to different excitation types. We also made some other predictions.
16:10 Triangle singularity appearing as an X(3872)-like peak in $B\to(J/\psi \pi+ \pi-)K\pi$ - Satoshi Nakamura (Universidade Cruzeiro do Sul)
Triangle singularity appearing as an X(3872)-like peak in $B\to(J/\psi \pi+ \pi-)K\pi$
- Satoshi Nakamura (Universidade Cruzeiro do Sul)
16:10 - 16:55
Triangle singularity appearing as an X(3872)-like peak in $B\to(J/\psi \pi+ \pi-)K\pi$
17:00 闭幕式 - Hai-Ping Peng (USTC)
闭幕式
- Hai-Ping Peng (USTC)
17:00 - 17:10