Please use this identifier to cite or link to this item:
https://dspace.iiti.ac.in/handle/123456789/12558
| Title: | Measurement of the Λ hyperon lifetime |
| Authors: | Bailung, Yoshini Behera, Debadatta Deb, Soumen |
| Issue Date: | 2023 |
| Publisher: | American Physical Society |
| Citation: | Acharya, S., Adamová, D., Adler, A., Aglieri Rinella, G., Agnello, M., Agrawal, N., Ahammed, Z., Ahmad, S., Ahn, S. U., Ahuja, I., Akindinov, A., Al-Turany, M., Aleksandrov, D., Alessandro, B., Alfanda, H. M., Alfaro Molina, R., Ali, B., Alici, A., Alizadehvandchali, N., … ALICE Collaboration. (2023n). Measurements of azimuthal anisotropies at forward and backward rapidity with muons in high-multiplicity p–Pb collisions at sNN=8.16 TeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. Scopus. https://doi.org/10.1016/j.physletb.2023.137782 |
| Abstract: | A new, more precise measurement of the Λ hyperon lifetime is performed using a large data sample of Pb-Pb collisions at sNN=5.02 TeV with ALICE. The Λ and Λ¯ hyperons are reconstructed at midrapidity using their two-body weak decay channel Λ→p+π- and Λ¯→p¯+π+. The measured value of the Λ lifetime is τΛ=[261.07±0.37(stat.)±0.72(syst.)] ps. The relative difference between the lifetime of Λ and Λ¯, which represents an important test of CPT invariance in the strangeness sector, is also measured. The obtained value (τΛ-τΛ¯)/τΛ=0.0013±0.0028(stat.)±0.0021(syst.) is consistent with zero within the uncertainties. Both measurements of the Λ hyperon lifetime and of the relative difference between τΛ and τΛ¯ are in agreement with the corresponding world averages of the Particle Data Group and about a factor of three more precise. © 2023 CERN. |
| URI: | https://doi.org/10.1103/PhysRevD.108.032009 https://dspace.iiti.ac.in/handle/123456789/12558 |
| ISSN: | 2470-0010 |
| Type of Material: | Journal Article |
| Appears in Collections: | Department of Physics |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
Altmetric Badge: