title:
|
Searches for discrete symmetries violation in ortho-positronium decay using the J-PET detector |
author: |
Kisielewska Daria , Bednarski Tomasz , Białas Piotr , Czerwiński Eryk , Gajos Aleksander , Gorgol Marek, Jasińska Bożena, Korcyl Grzegorz , Kowalski Paweł, Kozik Tomasz , Krzemień Wojciech , Kubicz Ewelina , Niedźwiecki Szymon , Pałka Marek , Raczyński Lech, Rudy Zbigniew , Rundel Oleksandr , Gupta-Sharma Neha , Silarski Michał , Słomski Artur , Strzelecki Adam , Wiślicki Wojciech, Zieliński Marcin , Zgardzińska Bożena, Moskal Paweł , Kapłon Łukasz , Wieczorek Anna
|
journal title:
|
Nukleonika |
title of volume:
|
Proceedings of the 42nd Polish Seminar on Positron Annihilation Lublin, Poland, 29 June -1 July 2015 |
volume: |
60 |
issue:
|
4 |
date of publication
:
|
2015 |
pages:
|
729-732 |
ISSN: |
0029-5922
|
eISSN: |
1508-5791
|
DOI: |
10.1515/nuka-2015-0131
|
URL: |
http://www.nukleonika.pl/www/back/full/vol60_2015/v60n4p729f.pdf
|
date accessed: |
2015-11-19
|
notes:
|
Autorka Daria Kisielewska podpisana jako Daria Kamińska. |
language: |
English |
journal language:
|
English |
abstract in English: |
In this paper we present prospects for using the J-PET detector to search for discrete symmetries violations in a purely leptonic system of the positronium atom. We discuss tests of CP and CPT symmetries by means of ortho-positronium decays into three photons. No zero expectation values for chosen correlations between ortho-positronium spin and momentum vectors of photons would imply the existence of physics phenomena beyond the Standard Model. Previous measurements resulted in violation amplitude parameters for CP and CPT symmetries consistent with zero, with an uncertainty of about 10-3. The J-PET detector allows to determine those values with better precision thanks to a unique time and angular esolution combined with a high geometrical acceptance. Achieving the aforementioned is possible due to application of polymer scintillators instead of crystals as detectors of annihilation quanta. |
keywords in English: |
discrete symmetries, J-PET, ortho-positronium |
number of pulisher's sheets: |
0,2 |
affiliation: |
Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut Fizyki im. Mariana Smoluchowskiego, Wydział Fizyki, Astronomii i Informatyki Stosowanej : Zakład Technologii Gier, Wydział Fizyki, Astronomii i Informatyki Stosowanej : Zakład Technologii Informatycznych |
type: |
journal article |
subtype: |
academic paper |
punktacja MEiN [2015 A]: 15