prikaz prve stranice dokumenta Closing the door on the “puzzle of decoherence” of annihilation quanta
  Download
PDF 1.18 MB
Scientific paper - Letter
Closing the door on the “puzzle of decoherence” of annihilation quanta
Physics Letters B, 852 (2024); 138628. https://doi.org/10.1016/j.physletb.2024.138628
Parashari, Siddharth; Bosnar, Damir; Friščić, Ivica; Kožuljević, Ana Marija; Kuncic, Zdenka; Žugec, Petar; Makek, Mihael

Cite this document

Parashari, S., Bosnar, D., Friščić, I., Kožuljević, A. M., Kuncic, Z., Žugec, P. & Makek, M. (2024). Closing the door on the “puzzle of decoherence” of annihilation quanta. Physics Letters B, 852.. doi: 10.1016/j.physletb.2024.138628

Parashari, Siddharth, et al. "Closing the door on the “puzzle of decoherence” of annihilation quanta." Physics Letters B, vol. 852, 2024. https://doi.org/10.1016/j.physletb.2024.138628

Parashari, Siddharth, Damir Bosnar, Ivica Friščić, Ana Marija Kožuljević, Zdenka Kuncic, Petar Žugec and Mihael Makek. "Closing the door on the “puzzle of decoherence” of annihilation quanta." Physics Letters B 852 (2024). https://doi.org/10.1016/j.physletb.2024.138628

Parashari, S., et al. (2024) 'Closing the door on the “puzzle of decoherence” of annihilation quanta', Physics Letters B, 852. doi: 10.1016/j.physletb.2024.138628

Parashari S, Bosnar D, Friščić I, Kožuljević AM, Kuncic Z, Žugec P, and sur.. Closing the door on the “puzzle of decoherence” of annihilation quanta. Physics Letters B [Internet]. 2024 May [cited 2024 July 31];852. doi: 10.1016/j.physletb.2024.138628

S. Parashari, et al., "Closing the door on the “puzzle of decoherence” of annihilation quanta", Physics Letters B, vol. 852, May 2024. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:945506. [Accessed: 31 July 2024]

Please login to the repository to save this object to your list.
Metadata
Title (english)Closing the door on the “puzzle of decoherence” of annihilation quanta
AuthorSiddharth Parashari
AuthorDamir Bosnar
AuthorIvica Friščić
AuthorAna Marija Kožuljević
AuthorZdenka Kuncic
AuthorPetar Žugec
AuthorMihael Makek
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
In positron annihilation, exploration of the polarization correlations of the emerging gamma quanta has gained interest, since they offer a possibility to improve signal-to-background in medical imaging using positron emission tomography. The annihilation quanta, which are predicted to be in an entangled state, have orthogonal polarizations and this property may be exploited to discriminate them from two uncorrelated gamma photons contributing to the background. Recent experimental studies of polarization correlations of the annihilation quanta after a prior Compton scattering of one of them, had rather different conclusions regarding the strength of the correlation after the scattering, showing its puzzling nature. The scattering was described as a decoherence process. In the present work, we perform for the first time, a study of the polarization correlations of annihilation quanta after decoherence via Compton scattering in the angular range 0° − 50° using single-layer gamma ray polarimeters. In addition, we compare the measured polarization correlations after Compton scattering at 30° with an active and a passive scatterer element. The measured azimuthal correlation of back-to-back annihilation quanta is consistent with the Pryce-Ward formulation, as confirmed by Monte Carlo simulations. Further, the results indicate that the correlation, expressed in terms of the polarimetric modulation factor, shows no significant difference at small scattering angles (0° − 30°) compared to the correlation measured for direct photons, while a moderate indication of a lower modulation is observed for 50° scattering angle. The measured modulation is larger at all scattering angles than the one expected from the simulation of orthogonally polarized, independent annihilation quanta.
Keywords (english)
Languageenglish
Publication typeScientific paper - Letter
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titlePhysics Letters B
Numberingvol. 852, 138628
p-ISSN0370-2693
DOIhttps://doi.org/10.1016/j.physletb.2024.138628
URN:NBNurn:nbn:hr:217:945506
Publication2024-05
ProjectNumber: PZS-2019-02-5829
Title (croatian): Jednoslojni polarimetar gama zračenja za primjene u medicinskom oslikavanju i za temeljna istraživanja u fizici
Title (english): Single Layer Gamma-Ray Polarimeter for Medical Imaging Applications and Fundamental Physics Research
Acronym: SiLGaP
Leader: Mihael Makek
Jurisdiction: Croatia
Funding stream: Programme Research Cooperability
ProjectNumber: KK.01.1.1.01.0004
Title (croatian): Provedba vrhunskih istraživanja u sklopu Znanstvenog centra izvrsnosti za kvantne i kompleksne sustave te reprezentacije Liejevih algebri
Title (english): Implementation of top research within the Scientific Center of Excellence for Quantum and Complex Systems, and Representations of Lie Algebras
Acronym: QuantiXLie
Leader: Hrvoje Buljan
Jurisdiction: eu
Funding stream: European Regional Development Fund
ProjectNumber: 101038099
Title (croatian): Raspad orto-pozitronija i potraga za slamanjem CP i CPT simetrije u leptonskom sektoru
Title (english): Ortho-positronium decay and the search for CP and CPT violation in leptonic sector
Acronym: OPSVIO
Leader: Ivica Friščić
Jurisdiction: eu
Funding stream: Horizon 2020
Document URLhttps://linkinghub.elsevier.com/retrieve/pii/S0370269324001862
Type of resourceText
Access conditionsOpen access
Terms of useLicence Attribution 4.0 International (CC BY 4.0) icon
Public note© 2024 The Author(s). Published by Elsevier B.V. Funded by SCOAP³. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Received 9 May 2023; Received in revised form 29 March 2024; Accepted 1 April 2024. Available online 5 April 2024. Published May 2024.
Created on2024-07-31 11:41:30