Angular moments of the decay [lambda] 0b→[lambda] [mu] + [mu] − at low hadronic recoil
An analysis of the angular distribution of the decay Λ b 0 → Λμ+μ− is presented, using data collected with the LHCb detector between 2011 and 2016 and corresponding to an integrated luminosity of approximately 5 fb−1. Angular observables are determined using a moment analysis of the angular distribu...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
September 26, 2018
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| In: |
Journal of high energy physics
Year: 2018, Heft: 9 |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP09(2018)146 |
| Online-Zugang: | Verlag, Volltext: https://doi.org/10.1007/JHEP09(2018)146
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| Verfasserangaben: | the LHCb collaboration |
MARC
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| 245 | 1 | 0 | |a Angular moments of the decay [lambda] 0b→[lambda] [mu] + [mu] − at low hadronic recoil |c the LHCb collaboration |
| 246 | 3 | 0 | |a Λ, μ |
| 246 | 3 | 3 | |a Angular moments of the decay Lambda 0 b → Lambda mu plus mu minus at low hadronic recoil |
| 264 | 1 | |c September 26, 2018 | |
| 300 | |a 27 | ||
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| 500 | |a The LHCb collaboration: R. Aaij, P. d'Argent, S. Bachmann, S. Braun, A. Comerma-Montells, M. De Cian, D. Berninghoff, M. Dziewiecki, D. Gerick, X. Han, S. Hansmann-Menzemer, M. Kecke, B. Khanji, M. Kolpin, R. Kopecna, B. Leverington, J. Marks, D.S. Mitzel, S. Neubert, A. Piucci, N. Skidmore, M. Stahl, S. Stemmle, J. van Tilburg, U. Uwer, A. Zhelezov [und weitere] | ||
| 500 | |a Im Titel werden "Lambda" und "mu" als griechischer Buchstabe dargestellt | ||
| 500 | |a Im Titel werden die Zeichen "+" und "-" hochgestellt | ||
| 500 | |a Im Titel sind "0" und "b" untereinander geschrieben: "0" hochgestellt, "b" tiefgestellt | ||
| 500 | |a Gesehen am 04.06.2019 | ||
| 520 | |a An analysis of the angular distribution of the decay Λ b 0 → Λμ+μ− is presented, using data collected with the LHCb detector between 2011 and 2016 and corresponding to an integrated luminosity of approximately 5 fb−1. Angular observables are determined using a moment analysis of the angular distribution at low hadronic recoil, corresponding to the dimuon invariant mass squared range 15 < q2 < 20 GeV2/c4. The full basis of observables is measured for the first time. The lepton-side, hadron-side and combined forward-backward asymmetries of the decay are determined to be AℓFB=−0.39±0.04(stat)±0.01(syst),AhFB=−0.30±0.05(stat)±0.02(syst),AℓhFB=+0.25±0.04(stat)±0.01(syst).AFBℓ=−0.39±0.04(stat)±0.01(syst),AFBh=−0.30±0.05(stat)±0.02(syst),AFBℓh=+0.25±0.04(stat)±0.01(syst). \begin{array}{l}{A}_{\mathrm{FB}}^{\ell }=-0.39\pm 0.04\left(\mathrm{stat}\right)\pm 0.01\left(\mathrm{syst}\right),\hfill \\ {}{A}_{\mathrm{FB}}^h=-0.30\pm 0.05\left(\mathrm{stat}\right)\pm 0.02\left(\mathrm{syst}\right),\hfill \\ {}{A}_{\mathrm{FB}}^{\ell h}=+0.25\pm 0.04\left(\mathrm{stat}\right)\pm 0.01\left(\mathrm{syst}\right).\hfill \end{array} The measurements are consistent with Standard Model predictions. Open image in new window | ||
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| 650 | 4 | |a Rare decay | |
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