Aguilar-Arevalo, A. et al. (2015) Improved measurement of the π → eν branching ratio. Physical Review Letters, 115(7), 071801. (doi: 10.1103/PhysRevLett.115.071801)
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Abstract
A new measurement of the branching ratio Re/μ=Γ(π+→e+ν+π+→e+νγ)/Γ(π+→μ+ν+π+→μ+νγ) resulted in Rexpe/μ=[1.2344±0.0023(stat)±0.0019(syst)]×10−4. This is in agreement with the standard model prediction and improves the test of electron-muon universality to the level of 0.1%.
| Item Type: | Articles (Letter) |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Protopopescu, Dr Dan and Britton, Professor David |
| Authors: | Aguilar-Arevalo, A., Aoki, M., Blecher, M., Britton, D.I., Bryman, D.A., vom Bruch, D., Chen, S., Comfort, J., Ding, M., Doria, L., Cuen-Rochin, S., Gumplinger, P., Hussain, A., Igarashi, Y., Ito, S., Kettell, S.H., Kurchaninov, L., Littenberg, L.S., Malbrunot, C., Mischke, R.E., Numao, T., Protopopescu, D., Sher, A., Sullivan, T., Vavilov, D., and Yamada, K. |
| Subjects: | Q Science > QC Physics |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Research Group: | Particle Physics Experimental |
| Journal Name: | Physical Review Letters |
| Journal Abbr.: | PRL |
| Publisher: | American Physical Society |
| ISSN: | 0031-9007 |
| ISSN (Online): | 1079-7114 |
| Related URLs: |
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