Abstract
In this talk we present preliminary experimental results of Dalitz plot analysis of the decay η ′ → η π + π − , based on the CLAS data collected during photoproduction experiment γ p → η ′ p for the center-of-mass energy from 1.90 to 2.62 GeV at Jefferson Lab. This experiment will enable us to report precise Dalitz plot parameters of the η ′ → η π + π − decay for the first time in a photoproduction experiment.
Highlights
The work is on the measurement of Dalitz plot parameters from the η → η π+ π− decay through the “g12" experiment at Thomas Jefferson National Accelerator Facility (JLab), Newport News,VA, USA
The η → η π+ π− decay has the lowest Q-value compared to the other decay modes of the η meson, because of its heavier decay products
The background subtraction is performed to each bin of the Dalitz plot as explained in Sect. 3 and the number of η meson events are calculated in each bin of the Dalitz plot
Summary
The work is on the measurement of Dalitz plot parameters from the η → η π+ π− decay through the “g12" experiment at Thomas Jefferson National Accelerator Facility (JLab), Newport News,VA, USA. Chiral Perturbation Theory is the effective theory to understand mesons in the low energy regime and Dalitz plot helps to understand the correct input to theoretical distribution of the effective chiral Lagrangian. Events surviving the cuts are corrected and made to pass the tuned “g12 Kinematic Fitter" which improves the signal to background ratio of the selection. PLUTO, an event generator is used for this analysis It uses ROOT based programmes and it is very commonly used in Hadron Physics experiments to generate hadronic production and decay of mesons. The generated events from PLUTO is modelled with the bremsstrahlung photon, differential cross-setion of the η meson [3] and Dalitz plot parameters of η → η π+ π− decay [4]. The reconstructed events are passed through the same conditions in the data before using it for analysis
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
