CP violation induced by the double resonance for pure annihilation decay process in perturbative QCD
Abstract In a perturbative QCD approach we study the direct CP violation in the pure annihilation decay process of $$\bar{B}^0_{s}\rightarrow \pi ^+\pi ^-\pi ^+\pi ^-$$ B ¯ s 0 → π + π - π + π - induced by the $$\rho $$ ρ and $$\omega $$ ω double resonance effect. Generally, the CP violation is smal...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2017-08-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-017-5091-3 |
| _version_ | 1811293098417848320 |
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| author | Gang Lü Ye Lu Sheng-Tao Li Yu-Ting Wang |
| author_facet | Gang Lü Ye Lu Sheng-Tao Li Yu-Ting Wang |
| author_sort | Gang Lü |
| collection | DOAJ |
| description | Abstract In a perturbative QCD approach we study the direct CP violation in the pure annihilation decay process of $$\bar{B}^0_{s}\rightarrow \pi ^+\pi ^-\pi ^+\pi ^-$$ B ¯ s 0 → π + π - π + π - induced by the $$\rho $$ ρ and $$\omega $$ ω double resonance effect. Generally, the CP violation is small in the pure annihilation type decay process. However, we find that the CP violation can be enhanced by double $$\rho $$ ρ – $$\omega $$ ω interference when the invariant masses of the $$\pi ^+\pi ^-$$ π + π - pairs are in the vicinity of the $$\omega $$ ω resonance. For the decay process of $$\bar{B}^0_{s}\rightarrow \pi ^+\pi ^-\pi ^+\pi ^-$$ B ¯ s 0 → π + π - π + π - , the CP violation can reach $$A_{CP}(\bar{B}^0_{s}\rightarrow \pi ^+\pi ^-\pi ^+\pi ^-)=27.20^{+0.05+0.28+7.13}_{-0.15-0.31-6.11}\%$$ A C P ( B ¯ s 0 → π + π - π + π - ) = 27 . 20 - 0.15 - 0.31 - 6.11 + 0.05 + 0.28 + 7.13 % . |
| first_indexed | 2024-04-13T04:56:25Z |
| format | Article |
| id | doaj.art-a8a3d7f618cf4cd4ad5b785c6f5027d8 |
| institution | Directory Open Access Journal |
| issn | 1434-6044 1434-6052 |
| language | English |
| last_indexed | 2024-04-13T04:56:25Z |
| publishDate | 2017-08-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-a8a3d7f618cf4cd4ad5b785c6f5027d82022-12-22T03:01:29ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522017-08-017781910.1140/epjc/s10052-017-5091-3CP violation induced by the double resonance for pure annihilation decay process in perturbative QCDGang Lü0Ye Lu1Sheng-Tao Li2Yu-Ting Wang3College of Science, Henan University of TechnologyDepartment of Physics, Guangxi Normal UniversityCollege of Science, Henan University of TechnologyCollege of Science, Henan University of TechnologyAbstract In a perturbative QCD approach we study the direct CP violation in the pure annihilation decay process of $$\bar{B}^0_{s}\rightarrow \pi ^+\pi ^-\pi ^+\pi ^-$$ B ¯ s 0 → π + π - π + π - induced by the $$\rho $$ ρ and $$\omega $$ ω double resonance effect. Generally, the CP violation is small in the pure annihilation type decay process. However, we find that the CP violation can be enhanced by double $$\rho $$ ρ – $$\omega $$ ω interference when the invariant masses of the $$\pi ^+\pi ^-$$ π + π - pairs are in the vicinity of the $$\omega $$ ω resonance. For the decay process of $$\bar{B}^0_{s}\rightarrow \pi ^+\pi ^-\pi ^+\pi ^-$$ B ¯ s 0 → π + π - π + π - , the CP violation can reach $$A_{CP}(\bar{B}^0_{s}\rightarrow \pi ^+\pi ^-\pi ^+\pi ^-)=27.20^{+0.05+0.28+7.13}_{-0.15-0.31-6.11}\%$$ A C P ( B ¯ s 0 → π + π - π + π - ) = 27 . 20 - 0.15 - 0.31 - 6.11 + 0.05 + 0.28 + 7.13 % .http://link.springer.com/article/10.1140/epjc/s10052-017-5091-3 |
| spellingShingle | Gang Lü Ye Lu Sheng-Tao Li Yu-Ting Wang CP violation induced by the double resonance for pure annihilation decay process in perturbative QCD European Physical Journal C: Particles and Fields |
| title | CP violation induced by the double resonance for pure annihilation decay process in perturbative QCD |
| title_full | CP violation induced by the double resonance for pure annihilation decay process in perturbative QCD |
| title_fullStr | CP violation induced by the double resonance for pure annihilation decay process in perturbative QCD |
| title_full_unstemmed | CP violation induced by the double resonance for pure annihilation decay process in perturbative QCD |
| title_short | CP violation induced by the double resonance for pure annihilation decay process in perturbative QCD |
| title_sort | cp violation induced by the double resonance for pure annihilation decay process in perturbative qcd |
| url | http://link.springer.com/article/10.1140/epjc/s10052-017-5091-3 |
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