Study of the strong coupling constants, α<sub>s</sub> (q<sup>2</sup> ) of π- and K<sup>0</sup> mesons from π<sup>-</sup>+p and π<sup>-</sup>+C interactions at 40 GeV/c
This paper is devoted to the production of π-and K0 mesons from π-+p→π-+X and π-+C→π-,K0+X interactions at 40 GeV/c as a function of the square of four momentum transfer. The cut parameter of the strong coupling constant is taken as Λac2=ma2+mc2. Values of the strong coupling constant are then compa...
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Mongolian Academy of Sciences
2024-10-01
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| Series: | Proceedings of the Mongolian Academy of Sciences |
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| Online Access: | https://www.mongoliajol.info/index.php/PMAS/article/view/3650 |
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| author | Narankhuu Khishigbuyan Tseepeldorj Baatar Alexandre I. Malakhov Baatar Otgongerel Maamuu Sovd Ravdandorj Togoo Gombojav Sharkhuu Mordorj Urangua |
| author_facet | Narankhuu Khishigbuyan Tseepeldorj Baatar Alexandre I. Malakhov Baatar Otgongerel Maamuu Sovd Ravdandorj Togoo Gombojav Sharkhuu Mordorj Urangua |
| author_sort | Narankhuu Khishigbuyan |
| collection | DOAJ |
| description | This paper is devoted to the production of π-and K0 mesons from π-+p→π-+X and π-+C→π-,K0+X interactions at 40 GeV/c as a function of the square of four momentum transfer. The cut parameter of the strong coupling constant is taken as Λac2=ma2+mc2. Values of the strong coupling constant are then compared to leading-order and next-to-leading-order perturbative QCD calculations for the first time. Agreement between the experimental data and theory is good, thus providing a precision test of QCD at large momentum transfers (q). The strong coupling constant αs is extracted as a function of q, showing a good agreement with the renormalisation group equation and with previous analyses. As the momentum transfers increases, the running coupling constant decreases. For each high-energy interaction, a quantity called the cut parameter is chosen differently depending on the secondary particles produced by the reaction. For each high-energy interaction, a quantity called the cut parameter is chosen differently depending on the secondary particles produced by the reaction. |
| format | Article |
| id | doaj-art-67d35491aa05443ea065e2e83ec84e49 |
| institution | Kabale University |
| issn | 2310-4716 2312-2994 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | Mongolian Academy of Sciences |
| record_format | Article |
| series | Proceedings of the Mongolian Academy of Sciences |
| spelling | doaj-art-67d35491aa05443ea065e2e83ec84e492025-08-20T03:25:27ZengMongolian Academy of SciencesProceedings of the Mongolian Academy of Sciences2310-47162312-29942024-10-01364310.5564/pmas.v64i02.36503601Study of the strong coupling constants, α<sub>s</sub> (q<sup>2</sup> ) of π- and K<sup>0</sup> mesons from π<sup>-</sup>+p and π<sup>-</sup>+C interactions at 40 GeV/cNarankhuu Khishigbuyan0https://orcid.org/0000-0001-8888-8515Tseepeldorj Baatar1https://orcid.org/0009-0003-9397-7506Alexandre I. Malakhov2https://orcid.org/0000-0001-8569-8409Baatar Otgongerel3https://orcid.org/0000-0001-5907-3317Maamuu Sovd4https://orcid.org/0000-0002-1459-6955Ravdandorj Togoo5https://orcid.org/0000-0002-7266-0564Gombojav Sharkhuu6Mordorj Urangua7https://orcid.org/0000-0003-1909-912XLaboratory of Theoretical and High Energy Physics, Institute of Physics and Technology, Mongolian Academy of Sciences, Ulaanbaatar, MongoliaLaboratory of Theoretical and High Energy Physics, Institute of Physics and Technology, Mongolian Academy of Sciences, Ulaanbaatar, MongoliaJoint Institute for Nuclear Research (JINR), Dubna, Russian FederationLaboratory of Theoretical and High Energy Physics, Institute of Physics and Technology, Mongolian Academy of Sciences, Ulaanbaatar, MongoliaLaboratory of Theoretical and High Energy Physics, Institute of Physics and Technology, Mongolian Academy of Sciences, Ulaanbaatar, MongoliaLaboratory of Theoretical and High Energy Physics, Institute of Physics and Technology, Mongolian Academy of Sciences, Ulaanbaatar, MongoliaLaboratory of Theoretical and High Energy Physics, Institute of Physics and Technology, Mongolian Academy of Sciences, Ulaanbaatar, MongoliaLaboratory of Theoretical and High Energy Physics, Institute of Physics and Technology, Mongolian Academy of Sciences, Ulaanbaatar, MongoliaThis paper is devoted to the production of π-and K0 mesons from π-+p→π-+X and π-+C→π-,K0+X interactions at 40 GeV/c as a function of the square of four momentum transfer. The cut parameter of the strong coupling constant is taken as Λac2=ma2+mc2. Values of the strong coupling constant are then compared to leading-order and next-to-leading-order perturbative QCD calculations for the first time. Agreement between the experimental data and theory is good, thus providing a precision test of QCD at large momentum transfers (q). The strong coupling constant αs is extracted as a function of q, showing a good agreement with the renormalisation group equation and with previous analyses. As the momentum transfers increases, the running coupling constant decreases. For each high-energy interaction, a quantity called the cut parameter is chosen differently depending on the secondary particles produced by the reaction. For each high-energy interaction, a quantity called the cut parameter is chosen differently depending on the secondary particles produced by the reaction.https://www.mongoliajol.info/index.php/PMAS/article/view/3650mesons |
| spellingShingle | Narankhuu Khishigbuyan Tseepeldorj Baatar Alexandre I. Malakhov Baatar Otgongerel Maamuu Sovd Ravdandorj Togoo Gombojav Sharkhuu Mordorj Urangua Study of the strong coupling constants, α<sub>s</sub> (q<sup>2</sup> ) of π- and K<sup>0</sup> mesons from π<sup>-</sup>+p and π<sup>-</sup>+C interactions at 40 GeV/c Proceedings of the Mongolian Academy of Sciences mesons |
| title | Study of the strong coupling constants, α<sub>s</sub> (q<sup>2</sup> ) of π- and K<sup>0</sup> mesons from π<sup>-</sup>+p and π<sup>-</sup>+C interactions at 40 GeV/c |
| title_full | Study of the strong coupling constants, α<sub>s</sub> (q<sup>2</sup> ) of π- and K<sup>0</sup> mesons from π<sup>-</sup>+p and π<sup>-</sup>+C interactions at 40 GeV/c |
| title_fullStr | Study of the strong coupling constants, α<sub>s</sub> (q<sup>2</sup> ) of π- and K<sup>0</sup> mesons from π<sup>-</sup>+p and π<sup>-</sup>+C interactions at 40 GeV/c |
| title_full_unstemmed | Study of the strong coupling constants, α<sub>s</sub> (q<sup>2</sup> ) of π- and K<sup>0</sup> mesons from π<sup>-</sup>+p and π<sup>-</sup>+C interactions at 40 GeV/c |
| title_short | Study of the strong coupling constants, α<sub>s</sub> (q<sup>2</sup> ) of π- and K<sup>0</sup> mesons from π<sup>-</sup>+p and π<sup>-</sup>+C interactions at 40 GeV/c |
| title_sort | study of the strong coupling constants α sub s sub q sup 2 sup of π and k sup 0 sup mesons from π sup sup p and π sup sup c interactions at 40 gev c |
| topic | mesons |
| url | https://www.mongoliajol.info/index.php/PMAS/article/view/3650 |
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