1. bookVolume 60 (2015): Issue 4 (December 2015)
Journal Details
License
Format
Journal
eISSN
1508-5791
First Published
25 Mar 2014
Publication timeframe
4 times per year
Languages
English
Journal Details
License
Format
Journal
eISSN
1508-5791
First Published
25 Mar 2014
Publication timeframe
4 times per year
Languages
English
Abstract

In this paper, we present prospects for using the Jagiellonian positron emission tomograph (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 the unique time and angular resolution combined with a high geometrical acceptance. Achieving the aforementioned is possible because of the application of polymer scintillators instead of crystals as detectors of annihilation quanta.

Keywords

1. Christenson, J. H., Cronin, J. W., Fitch, V. L., & Turlay, R. (1964). Evidence for the 2π decay of the K20 meson. Phys. Rev. Lett., 13, 138–140. DOI: 10.1103/PhysRevLett.13.138.10.1103/PhysRevLett.13.138Search in Google Scholar

2. BABAR Collaboration: Aubert, B. et al. (2001). Measurement of CP-violating asymmetries in B0 decays to CP eigenstates. Phys. Rev. Lett., 86, 2515–2522. DOI: 10.1103/PhysRevLett.86.2515.10.1103/PhysRevLett.86.251511289970Search in Google Scholar

3. Sakharov, A. D. (1967). Violation of CP invariance, C asymmetry and Baryon asymmetry of the Universe. Pisma Zh. Eksp. Teor. Fiz., 5, 32–35. DOI: 10.1070/PU1991v034n05ABEH002497.10.1070/PU1991v034n05ABEH002497Search in Google Scholar

4. Bernreuther, W., Low, U., Ma, J. P., & Nachtmann, O. (1988). How to test CP, T, and CPT invariance in the three photon decay of polarized 3S1 positronium. Z. Phys. C, 41(1), 143–158. DOI: 10.1007/BF01412589.10.1007/BF01412589Search in Google Scholar

5. Harpen, M. D. (2004) Positronium: Review of symmetry, conserved quantities and decay for the radiological physicist. Med. Phys., 31(1), 57–61. DOI: 10.1118/1.1630494.10.1118/1.163049414761021Search in Google Scholar

6. Yamazaki, T., Namba, T., Asai, A., & Kobayashi, T. (2010). Search for CP violation in positronium decay. Phys. Rev. Lett., 104, 08340–08344. DOI: 10.1103/PhysRevLett.104.083401.10.1103/PhysRevLett.104.08340120366929Search in Google Scholar

7. Vetter, P. A., & Freedman, S. J. (2003). Search for CPT-odd decays of positronium. Phys. Rev. Lett., 91, 263401–263405. DOI: 10.1103/PhysRev-Lett.91.263401.Search in Google Scholar

8. Moskal, P., Zoń, N., Bednarski, T., Białas, P., Czerwiński, E., Gajos, A., Kamińska, D., Kapłon, Ł., Kochanowski, A., Korcyl, G., Kowal, J., Kowalski, P., Kozik, T., Krzemień, W., Kubicz, E., Niedźwiecki, Sz., Pałka, M., Raczyński, L., Rudy, Z., Rundel, O., Salabura, P., Sharma, N. G., Silarski, M., Słomski, A., Smyrski, J., Strzelecki, A., Wieczorek, A., Wiślicki, W., & Zieliński, M. (2015). A novel method for the line-of-response and time-of-flight reconstruction in TOF-PET detectors based on a library of synchronized model signals. Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip., 775, 54–62. DOI: 10.1016/j.nima.2014.12.005. [arXiv:1412.6963].10.1016/j.nima.2014.12.005Search in Google Scholar

9. Moskal, P., Niedźwiecki, Sz., Bednarski, T., Czerwiński, E., Kapłon, Ł., Kubicz, E., Moskal, I., Pawlik-Niedźwiecka, M., Sharma, N. G., Silarski, M., Zieliński, M., Zoń, N., Białas, P., Gajos, A., Kochanowski, A., Korcyl, G., Kowal, J., Kowalski, P., Kozik, T., Krzemień, W., Molenda, M., Pałka, M., Raczyński, L., Rudy, Z., Salabura, P., Słomski, A., Smyrski, J., Strzelecki, A., Wieczorek, A., & Wiślicki, W. (2014). Test of a single module of the J-PET scanner based on plastic scintillators. Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip., 764, 317–321. DOI: 10.1016/j.nima.2014.07.052. [arXiv:1407.7395].10.1016/j.nima.2014.07.052Search in Google Scholar

10. Korcyl, G., Moskal, P., Bednarski, T., Białas, P., Czerwiński, E., Kapłon, Ł., Kochanowski, A., Kowal, J., Kowalski, P., Kozik, T., Krzemień, W., Molenda, M., Niedźwiecki, Sz., Pałka, M., Pawlik, M., Raczyński, L., Rudy, Z., Salabura, P., Gupta-Sharma, N., Silarski, M., Słomski, A., Smyrski, J., Strzelecki, A., Wiślicki, W., Zieliński, M., & Zoń, N. (2014). Trigger-less and reconfigurable data acquisition system for positron emission tomography. Bio-Algorithms and Med-Systems, 10(1), 37–40. DOI: 10.1515/bams-2013-0115.10.1515/bams-2013-0115Search in Google Scholar

11. Pałka, M., Bednarski, T., Białas, P., Czerwiński, E., Kapłon, Ł., Kochanowski, A., Korcyl, G., Kowal, J., Kowalski, P., Kozik, T., Krzemień, W., Molenda, M., Moskal, P., Niedźwiecki, Sz., Pawlik, M., Raczyński, L., Rudy, Z., Salabura, P., Sharma, N. G., Silarski, M., Słomski, A., Smyrski, J., Strzelecki, A., Wiślicki, W., Zieliński, M., & Zoń, N. (2014). A novel method based solely on FPGA units enabling measurement of time and charge of analog signals in Positron Emission Tomography. Bio-Algorithms and Med-Systems, 10(1), 41–45. DOI: 10.1515/bams-2013-0104. [arXiv:1311.6127].10.1515/bams-2013-0104Search in Google Scholar

12. Krzemień, W., Gajos, A., Gruntowski, A., Stoła, K., Trybek, D., Bednarski, T., Bialas, P., Czerwiński, E., Kaminska, D., Kapłon, Ł., Kochanowski, A., Korcyl, G., Kowal, J., Kowalski, P., Kozik, T., Kubicz, E., Moskal, P., Niedźwiecki, Sz., Pałka, M., Raczyński, L., Rudy, Z., Salabura, P., Sharma, N. G., Silarski, M., Słomski, A., Smyrski, J., Strzelecki, A., Wieczorek, A., Wiślicki, W., Zieliński, M., & Zon, N. (2015). Analysis framework for the J-PET scanner. Acta Phys. Pol. A, 127(5), 1491–1494. DOI: 10.12693/APhysPolA.127.1491. [arXiv:1503.00465].10.12693/APhysPolA.127.1491Search in Google Scholar

13. Raczyński, L., Moskal, P., Kowalski, P., Wiślicki, W., Bednarski, T., Białas, P., Czerwiński, E., Kapłon, Ł., Kochanowski, A., Korcyl, G., Kowal, J., Kozik, T., Krzemień, W., Kubicz, E., Molenda, M., Moskal, I., Niedźwiecki, Sz., Pałka, M., Pawlik-Niedźwiecka, M., Rudy, Z., Salabura, P., Sharma, N. G., Silarski, M., Słomski, A., Smyrski, J., Strzelecki, A., Wieczorek, A., Zieliński, M., & Zoń, N. (2014). Novel method for hit-position reconstruction using voltage signals in plastic scintillators and its application to Positron Emission Tomography. Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip., 764, 186–192. DOI: 10.1016/j.nima.2014.07.032. [arXiv:1311.6127].10.1016/j.nima.2014.07.032Search in Google Scholar

14. Raczyński, L., Moskal, P., Kowalski, P., Wiślicki, W., Bednarski, T., Białas, P., Czerwiński, E., Gajos, A., Kapłon, Ł., Kochanowski, A., Korcyl, G., Kowal, J., Kozik, T., Krzemień, W., Kubicz, E., Niedźwiecki, Sz., Pałka, M., Rudy, Z., Rundel, O., Salabura, P., Sharma, N. G., Silarski, M., Słomski, A., Smyrski, J., Strzelecki, A., Wieczorek, A., Zieliński, M., & Zoń, N. (2015). Compressive sensing of signals generated in plastic scintillators in a novel J-PET instrument. Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip., 786, 105–112. DOI: 10.1016/j.nima.2015.03.032. [arXiv:1503.05188].10.1016/j.nima.2015.03.032Search in Google Scholar

15. Moskal, P., Sharma, N. G., Silarski, M., Bednarski, T., Białas, P., Bulka, J., Czerwiński, E., Gajos, A., Kamińska, D., Kapłon, Ł., Kochanowski, A., Korcyl, G., Kowal, J., Kowalski, P., Kozik, T., Krzemień, W., Kubicz, E., Niedźwiecki, Sz., Pałka, M., Raczyński, L., Rudy, Z., Rundel, O., Salabura, P., Słomski, A., Smyrski, J., Strzelecki, A., Wieczorek, A., Wiślicki, W., Wochlik, I., Zieliński, M., & Zoń, N. (2015). Hit time and hit position reconstruction in the J-PET detector based on a library of averaged model signals. Acta Phys. Pol. A, 127(5), 1495–1499. DOI: 10.12693/APhysPolA.127.149. [arXiv:1502.07886].Search in Google Scholar

16. Kowalski, P., Moskal, P., Wiślicki, W., Raczyński, L., Bednarski, T., Białas, P., Bułka, J., Czerwiński, E., Gajos, A., Gruntowski, A., Kamińska, D., Kapłon, Ł., Kochanowski, A., Korcyl, G., Kowal, J., Kozik, T., Krzemień, W., Kubicz, E., Niedźwiecki, Sz., Pałka, M., Rudy, Z., Salabura, P., Sharma, N. G., Silarski, M., Słomski, A., Smyrski, J., Strzelecki, A., Wieczorek, A., Wochlik, I., Zieliński, M., & Zoń, N. (2015). Multiple scattering and accidental coincidences in the J-PET detector simulated using GATE package. Acta Phys. Pol. A, 127(5), 1505–1512. DOI: 10.12693/APhysPolA.127.1505. [arXiv:1502.04532].10.12693/APhysPolA.127.1505Search in Google Scholar

17. Cal-González, J., Herraiz, J. L., España, S., Corzo, P. M. G., Vaquero, J. J., Desco, M., & Udias, J. M. (2013). Positron range estimations with PeneloPET. Phys. Med. Biol., 58, 5127–5152. DOI: 10.1088/0031-9155/58/15/5127.10.1088/0031-9155/58/15/512723835700Search in Google Scholar

18. Berestetskii, V. B., Lifshitz, E. M., & Pitaevskii, L. P. (1971). Relativistic quantum theory. Oxford, New York: Pergamon Press.Search in Google Scholar

19. Gajos, A. (2013). A novel algorithm for the K→π0 π0→γγγγ decay vertex reconstruction for the KLOE-2 experiment. Diploma Thesis, Jagiellonian University, Krakow, Poland.Search in Google Scholar

20. Gajos, A. (2015). Study of the KSKL→πlν3π0 process for time reversal symmetry test at KLOE-2. Acta Phys. Pol. B, 46, 13–18. DOI: 5506/AphysPolB.46.13.10.5506/APhysPolB.46.13Search in Google Scholar

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