Conveners
Heavy Flavor: Heavy Flavor
- Zhenwei Yang (Tsinghua University, Beijing, China)
Prof.
Liming Zhang
(Tsinghua University)
20/12/2018, 14:00
Heavy Flavor
I will review the pentaquark study at LHCb and show the prospect with full LHCb data taking from 2011 to 2018.
Mr
Zhuoran Huang
(IHEP)
20/12/2018, 14:15
Heavy Flavor
In this work, we perform a combined analysis of the R(D), R(D*) and R(J/psi) anomalies in a model-independent
manner based on the general framework of the four-fermion effective field theory, with paying special attention to the employ of the hadronic form factors. For the B->D(D*) transition form factors, we use the HQET parametrization that include the higher order corrections of...
Menglin Xu
(Central China Normal University)
20/12/2018, 14:30
Heavy Flavor
The doubly charmed baryon decay Xicc++->Xic+pi+ is observed for the first time, with a statistical significance of 5.9σ, confirming a recent observation of the baryon in the Lambdac+k-pi+pi+ final state. The data sample used corresponds to an integrated luminosity of 1.7fb−1, collected by the LHCb experiment in pp collisions at a center-of-mass energy of 13TeV. The Xicc mass is measured to...
Mr
Ao Xu
(清华大学)
20/12/2018, 14:45
Heavy Flavor
The Doubly charmed baryon $\Xi_{cc}^{++}$ was observed by the LHCb experiment in 2017. Measurements of its properties will allow for precise tests of QCD, the theory of strong interactions, in a unique environment. In this talk, we present the first measurement of the lifetime of the doubly charmed baryon $\Xi_{cc}^{++}$, with signals reconstructed in the final states $\Lambda_c^+ K^- \pi^+...
Mr
jiajia Qin
(中国科学院大学物理学院)
20/12/2018, 15:00
Heavy Flavor
The production cross-sections of $\Upsilon(1S)$, $\Upsilon(2S)$ and $\Upsilon(3S)$ mesons in proton-proton collisions at $\sqrt{s}=13$ TeV are measured with a data sample corresponding to an integrated luminosity of $277 ± 11$ pb$^{−1}$ recorded by the LHCb experiment in 2015. The $\Upsilon$ mesons are reconstructed in the decay mode $\Upsilon\to\mu^{+}\mu^{-}$. The differential production...
Dr
Jianguo Bian
(IHEP)
20/12/2018, 15:15
Heavy Flavor
The first measurements of the underlying event activity in top quark and antiquark pair production are presented.
The measurements are performed in proton-proton collisions at a center-of-mass energy of 13 TeV, and are based on data collected by the CMS experiment at the LHC in 2016 corresponding to an integrated luminosity of 35.9 fb-1. In each event, the contribution from the underlying...
Mr
Di Wang
(School of Nuclear Science and Technology, Lanzhou University)
20/12/2018, 15:30
Heavy Flavor
A new $CP$-violation effect is found in charm decays into neutral kaons:
the interference between two tree (Cabibbo-favored
and doubly Cabibbo-suppressed) amplitudes with the mixing of final-state
mesons. This effect, estimated to be of order of $10^{-3}$, is much
larger than the direct $CP$ asymmetries in these decays, but missed in
the literature. It can be revealed by measuring the...
Prof.
Xing-Bo Yuan
(Central China Normal University)
20/12/2018, 15:45
Heavy Flavor
