Evidence for the Rare Decay Σ+→pμ+μ−; Physical Review Letters; Vol. 120, iss. 22
| Parent link: | Physical Review Letters Vol. 120, iss. 22.— 2018.— [221803, 10 p.] |
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| Corporate Authors: | , |
| Drugi avtorji: | , , , , , |
| Izvleček: | Title screen A search for the rare decay Σ+→pμ+μ− is performed using pp collision data recorded by the LHCb experiment at center-of-mass energies √s=7 and 8 TeV, corresponding to an integrated luminosity of 3 fb−1. An excess of events is observed with respect to the background expectation, with a signal significance of 4.1 standard deviations. No significant structure is observed in the dimuon invariant mass distribution, in contrast with a previous result from the HyperCP experiment. The measured Σ+→pμ+μ− branching fraction is (2.2+1.8−1.3)×10−8, where statistical and systematic uncertainties are included, which is consistent with the standard model prediction. |
| Jezik: | angleščina |
| Izdano: |
2018
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| Teme: | |
| Online dostop: | https://doi.org/10.1103/PhysRevLett.120.221803 |
| Format: | Elektronski Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664770 |
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| 200 | 1 | |a Evidence for the Rare Decay Σ+→pμ+μ− |f R. Aaij, C. A. Beteta, B. Adeva [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 48 tit.] | ||
| 330 | |a A search for the rare decay Σ+→pμ+μ− is performed using pp collision data recorded by the LHCb experiment at center-of-mass energies √s=7 and 8 TeV, corresponding to an integrated luminosity of 3 fb−1. An excess of events is observed with respect to the background expectation, with a signal significance of 4.1 standard deviations. No significant structure is observed in the dimuon invariant mass distribution, in contrast with a previous result from the HyperCP experiment. The measured Σ+→pμ+μ− branching fraction is (2.2+1.8−1.3)×10−8, where statistical and systematic uncertainties are included, which is consistent with the standard model prediction. | ||
| 461 | |t Physical Review Letters | ||
| 463 | |t Vol. 120, iss. 22 |v [221803, 10 p.] |d 2018 | ||
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