Sumit Basu
Postdoctoral Researcher
Measurement of the Lifetime and Λ Separation Energy of HΛ3
Author
Summary, in English
The most precise measurements to date of the HΛ3 lifetime τ and Λ separation energy BΛ are obtained using the data sample of Pb-Pb collisions at sNN=5.02 TeV collected by ALICE at the LHC. The HΛ3 is reconstructed via its charged two-body mesonic decay channel (HΛ3→He3+π- and the charge-conjugate process). The measured values τ=[253±11(stat)±6(syst)] ps and BΛ=[102±63(stat)±67(syst)] keV are compatible with predictions from effective field theories and confirm that the HΛ3 structure is consistent with a weakly bound system. © 2023 CERN.
Department/s
- Particle and nuclear physics
Publishing year
2023
Language
English
Publication/Series
Physical Review Letters
Volume
131
Issue
10
Document type
Journal article
Publisher
American Physical Society
Topic
- Subatomic Physics
Keywords
- Binary alloys
- Nitrogen compounds
- Charge conjugate
- Data sample
- Decay channels
- Effective field theory
- Measured values
- Measurements of
- Pb-Pb collisions
- Precise measurements
- Separation energy
- Tellurium compounds
Status
Published
ISBN/ISSN/Other
- ISSN: 0031-9007