Search for Dark Photons Produced in 13 TeV pp Collisions; Physical Review Letters; Vol. 120, iss. 6
| Parent link: | Physical Review Letters Vol. 120, iss. 6.— 2018.— [061801, 11 p.] |
|---|---|
| Korporativní autor: | |
| Další autoři: | , , , |
| Shrnutí: | Title screen Searches are performed for both promptlike and long-lived dark photons, A0 , produced in proton-proton collisions at a center-of-mass energy of 13 TeV, using A0 → μþμ− decays and a data sample corresponding to an integrated luminosity of 1.6 fb−1 collected with the LHCb detector. The promptlike A0 search covers the mass range from near the dimuon threshold up to 70 GeV, while the long-lived A0 search is restricted to the low-mass region 214 < mðA0 Þ < 350 MeV. No evidence for a signal is found, and 90% confidence level exclusion limits are placed on the γ-A0 kinetic-mixing strength. The constraints placed on promptlike dark photons are the most stringent to date for the mass range 10.6 < mðA0 Þ < 70 GeV, and are comparable to the best existing limits for mðA0 Þ < 0.5 GeV. The search for long-lived dark photons is the first to achieve sensitivity using a displaced-vertex signature. |
| Jazyk: | angličtina |
| Vydáno: |
2018
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| Témata: | |
| On-line přístup: | https://doi.org/10.1103/PhysRevLett.120.061801 |
| Médium: | MixedMaterials Elektronický zdroj Kapitola |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=663985 |
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| 200 | 1 | |a Search for Dark Photons Produced in 13 TeV pp Collisions |f R. Aaij, B. Adeva, M. Adinolfi, A. R. Vagner | |
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| 300 | |a Title screen | ||
| 320 | |a [References: 71 tit.] | ||
| 330 | |a Searches are performed for both promptlike and long-lived dark photons, A0 , produced in proton-proton collisions at a center-of-mass energy of 13 TeV, using A0 → μþμ− decays and a data sample corresponding to an integrated luminosity of 1.6 fb−1 collected with the LHCb detector. The promptlike A0 search covers the mass range from near the dimuon threshold up to 70 GeV, while the long-lived A0 search is restricted to the low-mass region 214 < mðA0 Þ < 350 MeV. No evidence for a signal is found, and 90% confidence level exclusion limits are placed on the γ-A0 kinetic-mixing strength. The constraints placed on promptlike dark photons are the most stringent to date for the mass range 10.6 < mðA0 Þ < 70 GeV, and are comparable to the best existing limits for mðA0 Þ < 0.5 GeV. The search for long-lived dark photons is the first to achieve sensitivity using a displaced-vertex signature. | ||
| 461 | |t Physical Review Letters | ||
| 463 | |t Vol. 120, iss. 6 |v [061801, 11 p.] |d 2018 | ||
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