دورية أكاديمية
Measurement of Structure Dependent Radiative K + -> e,sup>(+) vy gamma Decays Using Stopped Positive Kaons
| العنوان: | Measurement of Structure Dependent Radiative K + -> e,sup>(+) vy gamma Decays Using Stopped Positive Kaons |
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| المؤلفون: | Ito, H., Kobayashi, A., Bianchin, S., Cao, T., Djalali, C., Dongwi, D. H., Gautam, T., Gill, D., Hasinoff, M. D., Horie, K., Igarashi, Y., Imazato, J., Kalantarians, N., Kawai, H., Kimura, S., Kodama, S., Kohl, M., Lu, H., Mineev, O., Strauch, Steffen |
| المصدر: | Faculty Publications |
| بيانات النشر: | Scholar Commons |
| سنة النشر: | 2022 |
| المجموعة: | University of South Carolina Libraries: Scholar Commons |
| مصطلحات موضوعية: | performance, counter, ratio, Monte Carlo simulations, kaons, Astrophysics and Astronomy, Physics |
| الوصف: | The structure dependent radiative K + → e+νγ (KSD+e2γ) decay was investigated with stopped positive kaons. The e+ momentum spectra containing 574±30 KSD+e2γ events with a K + → μ+ν (Kμ2) background of 28 ± 19 events were measured with and without a photon in coincidence and analyzed with Monte Carlo simulations for acceptance and detector response to extract the ratio of the branching ratio of the KSD+e2γ decay and the K + → e+ν decay including the internal bremsstrahlung process (Ke2(γ )). A value of Br(KSD+e2γ )/Br(Ke2(γ )) = 1.12 ± 0.07stat ± 0.04syst was obtained. This indicates a partial branching ratio, Br(KSD+e2γ , pe > 200 MeV/c, Eγ > 10 MeV)/Br(Kμ2) = (1.85 ± 0.11stat ± 0.07syst) × 10−5, which is 25% (∼2.5σ) higher than the previous experimental result. |
| نوع الوثيقة: | text |
| وصف الملف: | text/html |
| اللغة: | English |
| العلاقة: | https://scholarcommons.sc.edu/phys_facpub/240Test; https://scholarcommons.sc.edu/context/phys_facpub/article/1243/type/native/viewcontent/S0370269322000478.htmTest |
| DOI: | 10.1016/j.physletb.2022.136913; |
| الإتاحة: | https://doi.org/10.1016/j.physletb.2022.136913;10.1016/j.physletb.2022.136913Test https://scholarcommons.sc.edu/phys_facpub/240Test https://scholarcommons.sc.edu/context/phys_facpub/article/1243/type/native/viewcontent/S0370269322000478.htmTest |
| رقم الانضمام: | edsbas.54D0B67D |
| قاعدة البيانات: | BASE |
| DOI: | 10.1016/j.physletb.2022.136913; |
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