Academic Journal
KEK Preprint 2000-16 Measurement of Direct Photon Emission in K + →π + π 0 γ Decay
| العنوان: | KEK Preprint 2000-16 Measurement of Direct Photon Emission in K + →π + π 0 γ Decay |
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| المؤلفون: | L. S. Littenberg, J. A. Macdonald, R. A. Mcpherson, P. D. Meyers, J. Mildenberger, N. Muramatsu, T. Nakano, T. Numao, J. -m. Poutissou, R. Poutissou, G. Redlinger (c, T. Sato, T. Shinkawa, F. C. Shoemaker, R. Soluk, J. R. Stone, R. C. Str, S. Sugimoto, C. Witzig, Y. Yoshimura |
| المساهمون: | The Pennsylvania State University CiteSeerX Archives |
| المصدر: | http://arxiv.org/pdf/hep-ex/0007021v1.pdf. |
| سنة النشر: | 2000 |
| المجموعة: | CiteSeerX |
| الوصف: | We have performed a measurement of the K + →π + π 0 γ decay and have observed 2 ×10 4 events. The best fit to the decay spectrum gives a branching ratio for direct photon emission of (4.7 ± 0.8 ± 0.3) × 10 −6 in the π + kinetic energy region of 55 to 90 MeV and requires no component due to interference with inner bremsstrahlung. Typeset using REVTEX 1 The radiative decay K + →π + π0γ (Kπ2γ) in which the γ is directly emitted (DE) is sensitive to important aspects of the low energy hadronic interactions of mesons [1]. Although the DE component is difficult to observe because it is very small compared to the dominant inner bremsstrahlung (IB) associated with the K + → π + π0 (Kπ2) decay, it may be isolated kinematically. The DE component consists of magnetic and electric transitions. At O(p4) in Chiral Perturbation Theory (ChPT), the magnetic amplitude consists of a reducible chirally anomalous amplitude [2] which is unambiguously determined by the Wess- |
| نوع الوثيقة: | text |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.342.1467; http://arxiv.org/pdf/hep-ex/0007021v1.pdf |
| الاتاحة: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.342.1467 http://arxiv.org/pdf/hep-ex/0007021v1.pdf |
| Rights: | Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
| رقم الانضمام: | edsbas.EFC79781 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |