Observation of Y(1S) pair production in proton-proton collisions at s√=8 TeV
dc.contributor.author | CMS Collaboration | |
dc.date.accessioned | 2018-10-17T19:58:20Z | |
dc.date.available | 2018-10-17T19:58:20Z | |
dc.date.issued | 2017-05-03 | |
dc.identifier.citation | The CMS collaboration, Khachatryan, V., Sirunyan, A.M. et al. J. High Energ. Phys. (2017) 2017: 13. https://doi.org/10.1007/JHEP05(2017)013 | en_US |
dc.identifier.uri | http://hdl.handle.net/1808/26850 | |
dc.description.abstract | Pair production of Y(1S) mesons is observed at the LHC in proton-proton collisions at s√=8 TeV by the CMS experiment in a data sample corresponding to an integrated luminosity of 20.7 fb−1. Both Y(1S) candidates are fully reconstructed via their decays to μ + μ −. The fiducial acceptance region is defined by an absolute Y(1S) rapidity smaller than 2.0. The fiducial cross section for the production of Y(1S) pairs, assuming that both mesons decay isotropically, is measured to be 68.8±12.7 (stat)±7.4 (syst)±2.8 (B) pb, where the third uncertainty comes from the uncertainty in the branching fraction of Y(1S) decays to μ + μ −. Assuming instead that the Y(1S) mesons are produced with different polarizations leads to variations in the measured cross section in the range from −38% to +36%. | en_US |
dc.publisher | Springer Verlag | en_US |
dc.rights | © The Author(s) 2017. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. | en_US |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | en_US |
dc.subject | Hadron-Hadron scattering (experiments) | en_US |
dc.subject | Quarkonium | en_US |
dc.title | Observation of Y(1S) pair production in proton-proton collisions at s√=8 TeV | en_US |
dc.type | Article | en_US |
kusw.kudepartment | Physics and Astronomy | en_US |
dc.identifier.doi | 10.1007/JHEP05(2017)013 | en_US |
kusw.oaversion | Scholarly/refereed, publisher version | en_US |
kusw.oapolicy | This item meets KU Open Access policy criteria. | en_US |
dc.rights.accessrights | openAccess | en_US |
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Except where otherwise noted, this item's license is described as: © The Author(s) 2017. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.