Measurement of the absolute branching fraction for Λc + → Λμ+νμ
We report the first measurement of the absolute branching fraction for View the MathML sourceΛc+→Λμ+νμ. This measurement is based on a sample of e+e−e+e− annihilation data produced at a center-of-mass energy View the MathML sources=4.6 GeV, collected with the BESIII detector at the BEPCII storage ri...
| Published in: | Physics Letters B Vol. 767. P. 42-47 |
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| Other Authors: | , , , |
| Format: | Article |
| Language: | English |
| Subjects: | |
| Online Access: | http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000581788 Перейти в каталог НБ ТГУ |
| Summary: | We report the first measurement of the absolute branching fraction for View the MathML sourceΛc+→Λμ+νμ. This measurement is based on a sample of e+e−e+e− annihilation data produced at a center-of-mass energy View the MathML sources=4.6 GeV, collected with the BESIII detector at the BEPCII storage rings. The sample corresponds to an integrated luminosity of 567 pb−1567 pb−1. The branching fraction is determined to be View the MathML sourceB(Λc+→Λμ+νμ)=(3.49±0.46(stat)±0.27(syst))%. In addition, we calculate the ratio View the MathML sourceB(Λc+→Λμ+νμ)/B(Λc+→Λe+νe) to be 0.96±0.16(stat)±0.04(syst)0.96±0.16(stat)±0.04(syst). |
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| Bibliography: | Библиогр.: 26 назв. |
| ISSN: | 0370-2693 |