Project Details
Projekt
Search for exotics in baryon-antibaryon states
Applicant
Professor Dr. Alfons Khoukaz
Subject Area
Nuclear and Elementary Particle Physics, Quantum Mechanics, Relativity, Fields
Term
from 2018 to 2022
Project identifier
Deutsche Forschungsgemeinschaft (DFG) - Project number 271236083
In the scope of the research project suggested here, available and future data gathered with the BESIII experiment shall be used for a systematic investigation in the search for exotic particles and the study of their properties. For the proposed work, extensive datasets stemming from e+e- collisions exist, which will be enlarged at the BEPCII storage ring with direct participation of our working group. At the center of our interest are the high center of mass energy data between 3.70 GeV and 4.60 GeV, which had recently been used to extract valuable information regarding the exotic particle candidates Y(4260) and Y(4360). The main objective of the research project suggested here is the investigation of reactions with a proton-antiproton pair in the final state. In more detail, the final state channels p pbar, p pbar γ, p pbar ω, p pbar η, p pbar Φ, and p pbar ππ shall be studied. Here, it is possible to detect these reactions both directly as well as in initial state radiation processes. Data collected with the BESIII experiment will allow to search for possible resonances in the quoted energy region. In addition, the search for resonances in the p pbar subsystem is of high interest with regard to the future PANDA experiment, in which proton-antiproton collisions will be used for direct searches of exotic particles in the charmonium sector. As a member of the PANDA collaboration, a close cooperation between both collaborations will be facilitated. Additionally, the production of the possibly exotic state X(3915) shall be studied in the reaction e+e- → X(3915)ππ, with the X(3915) decaying into the prominently seen J/ψω channel. Using a partial wave analysis, the currently ambiguous spin-parity assignment of the X(3915) state as either J(PC) = 0(++) or J(PC) = 2(++) can potentially be resolved.
DFG Programme
Research Units
