Pursuit of new physics within the $$\Lambda _c\rightarrow \Delta K$$ Λ c → Δ K decays
Abstract We point out the CP asymmetry in the chain decay of $$\Lambda _c^+\rightarrow \Delta ^+K(t)(\rightarrow \pi ^+\pi ^-)$$ Λ c + → Δ + K ( t ) ( → π + π - ) is determined by the branching fractions of $$\Lambda ^+_c\rightarrow \Delta ^{++} K^-$$ Λ c + → Δ + + K - , $$\Lambda ^+_c\rightarrow \D...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2022-11-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-022-11013-5 |
| _version_ | 1797985517776666624 |
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| author | Di Wang |
| author_facet | Di Wang |
| author_sort | Di Wang |
| collection | DOAJ |
| description | Abstract We point out the CP asymmetry in the chain decay of $$\Lambda _c^+\rightarrow \Delta ^+K(t)(\rightarrow \pi ^+\pi ^-)$$ Λ c + → Δ + K ( t ) ( → π + π - ) is determined by the branching fractions of $$\Lambda ^+_c\rightarrow \Delta ^{++} K^-$$ Λ c + → Δ + + K - , $$\Lambda ^+_c\rightarrow \Delta ^{+} K^0_{S,L}$$ Λ c + → Δ + K S , L 0 and $$\Lambda ^+_c\rightarrow \Delta ^{0} K^+$$ Λ c + → Δ 0 K + modes under the isospin symmetry. The ambiguities from loop-induced quantities and $$SU(3)_F$$ S U ( 3 ) F breaking hadronic effects are avoided. Once the CP asymmetry in the $$\Lambda _c^+$$ Λ c + decays into $$\Delta ^+$$ Δ + and neutral kaons is confirmed by experiments, we can check if it is beyond the Standard Model, or verify the CP-violating effect resulted from the interference between the Cabibbo-favored and the doubly Cabibbo-suppressed amplitudes with the neutral kaon mixing. Future measurements of branching fractions play a critical role in reducing the uncertainties. |
| first_indexed | 2024-04-11T07:19:25Z |
| format | Article |
| id | doaj.art-f9f3182334b243af8b6e96f2a5c0fe36 |
| institution | Directory Open Access Journal |
| issn | 1434-6052 |
| language | English |
| last_indexed | 2024-04-11T07:19:25Z |
| publishDate | 2022-11-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-f9f3182334b243af8b6e96f2a5c0fe362022-12-22T04:37:49ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522022-11-0182111610.1140/epjc/s10052-022-11013-5Pursuit of new physics within the $$\Lambda _c\rightarrow \Delta K$$ Λ c → Δ K decaysDi Wang0Department of Physics, Hunan Normal University, and Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of EducationAbstract We point out the CP asymmetry in the chain decay of $$\Lambda _c^+\rightarrow \Delta ^+K(t)(\rightarrow \pi ^+\pi ^-)$$ Λ c + → Δ + K ( t ) ( → π + π - ) is determined by the branching fractions of $$\Lambda ^+_c\rightarrow \Delta ^{++} K^-$$ Λ c + → Δ + + K - , $$\Lambda ^+_c\rightarrow \Delta ^{+} K^0_{S,L}$$ Λ c + → Δ + K S , L 0 and $$\Lambda ^+_c\rightarrow \Delta ^{0} K^+$$ Λ c + → Δ 0 K + modes under the isospin symmetry. The ambiguities from loop-induced quantities and $$SU(3)_F$$ S U ( 3 ) F breaking hadronic effects are avoided. Once the CP asymmetry in the $$\Lambda _c^+$$ Λ c + decays into $$\Delta ^+$$ Δ + and neutral kaons is confirmed by experiments, we can check if it is beyond the Standard Model, or verify the CP-violating effect resulted from the interference between the Cabibbo-favored and the doubly Cabibbo-suppressed amplitudes with the neutral kaon mixing. Future measurements of branching fractions play a critical role in reducing the uncertainties.https://doi.org/10.1140/epjc/s10052-022-11013-5 |
| spellingShingle | Di Wang Pursuit of new physics within the $$\Lambda _c\rightarrow \Delta K$$ Λ c → Δ K decays European Physical Journal C: Particles and Fields |
| title | Pursuit of new physics within the $$\Lambda _c\rightarrow \Delta K$$ Λ c → Δ K decays |
| title_full | Pursuit of new physics within the $$\Lambda _c\rightarrow \Delta K$$ Λ c → Δ K decays |
| title_fullStr | Pursuit of new physics within the $$\Lambda _c\rightarrow \Delta K$$ Λ c → Δ K decays |
| title_full_unstemmed | Pursuit of new physics within the $$\Lambda _c\rightarrow \Delta K$$ Λ c → Δ K decays |
| title_short | Pursuit of new physics within the $$\Lambda _c\rightarrow \Delta K$$ Λ c → Δ K decays |
| title_sort | pursuit of new physics within the lambda c rightarrow delta k λ c δ k decays |
| url | https://doi.org/10.1140/epjc/s10052-022-11013-5 |
| work_keys_str_mv | AT diwang pursuitofnewphysicswithinthelambdacrightarrowdeltaklcdkdecays |