A study of the $Z$ production cross-section in $pp$ collisions at $\sqrt{s} = 7$ TeV using tau final states
A measurement of the inclusive $Z \to \tau\tau$ cross-section in $pp$ collisions at $\sqrt{s} = 7$ TeV is presented based on a dataset of 1.0 fb$^{-1}$ collected by the LHCb detector. Candidates for $Z \to \tau\tau$ decays are identified through reconstructed final states with two muons, a muon and...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
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2012
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| _version_ | 1797076194009546752 |
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| author | collaboration, TL Aaij, R Beteta, C Adametz, A Adeva, B Adinolfi, M Adrover, C Affolder, A Ajaltouni, Z Albrecht, J Alessio, F Alexander, M Ali, S Alkhazov, G Cartelle, P Jr, A Amato, S Amhis, Y Anderlini, L Anderson, J Appleby, R Gutierrez, O Archilli, F Artamonov, A Artuso, M |
| author_facet | collaboration, TL Aaij, R Beteta, C Adametz, A Adeva, B Adinolfi, M Adrover, C Affolder, A Ajaltouni, Z Albrecht, J Alessio, F Alexander, M Ali, S Alkhazov, G Cartelle, P Jr, A Amato, S Amhis, Y Anderlini, L Anderson, J Appleby, R Gutierrez, O Archilli, F Artamonov, A Artuso, M |
| author_sort | collaboration, TL |
| collection | OXFORD |
| description | A measurement of the inclusive $Z \to \tau\tau$ cross-section in $pp$ collisions at $\sqrt{s} = 7$ TeV is presented based on a dataset of 1.0 fb$^{-1}$ collected by the LHCb detector. Candidates for $Z \to \tau\tau$ decays are identified through reconstructed final states with two muons, a muon and an electron, a muon and a hadron, or an electron and a hadron. The production cross-section for $Z$ bosons, with invariant mass between 60 and 120 GeV/$c^2$, which decay to $\tau$ leptons with transverse momenta greater than 20 GeV/$c$ and pseudorapidities between 2.0 and 4.5, is measured to be $\sigma_{pp \to Z \to \tau\tau} = 71.4 \pm 3.5 \pm 2.8 \pm 2.5$ pb; the first uncertainty is statistical, the second uncertainty is systematic, and the third is due to the uncertainty on the integrated luminosity. The ratio of the cross-sections for $Z \to \tau\tau$ to $Z \to \mu\mu$ is determined to be $0.93 \pm 0.09$, where the uncertainty is the combination of statistical, systematic, and luminosity uncertainties of the two measurements. |
| first_indexed | 2024-03-07T00:00:39Z |
| format | Journal article |
| id | oxford-uuid:75d3f25a-6ddf-44e0-9216-e345c0365d2d |
| institution | University of Oxford |
| last_indexed | 2024-03-07T00:00:39Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | oxford-uuid:75d3f25a-6ddf-44e0-9216-e345c0365d2d2022-03-26T20:11:52ZA study of the $Z$ production cross-section in $pp$ collisions at $\sqrt{s} = 7$ TeV using tau final statesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:75d3f25a-6ddf-44e0-9216-e345c0365d2dSymplectic Elements at Oxford2012collaboration, TLAaij, RBeteta, CAdametz, AAdeva, BAdinolfi, MAdrover, CAffolder, AAjaltouni, ZAlbrecht, JAlessio, FAlexander, MAli, SAlkhazov, GCartelle, PJr, AAmato, SAmhis, YAnderlini, LAnderson, JAppleby, RGutierrez, OArchilli, FArtamonov, AArtuso, MA measurement of the inclusive $Z \to \tau\tau$ cross-section in $pp$ collisions at $\sqrt{s} = 7$ TeV is presented based on a dataset of 1.0 fb$^{-1}$ collected by the LHCb detector. Candidates for $Z \to \tau\tau$ decays are identified through reconstructed final states with two muons, a muon and an electron, a muon and a hadron, or an electron and a hadron. The production cross-section for $Z$ bosons, with invariant mass between 60 and 120 GeV/$c^2$, which decay to $\tau$ leptons with transverse momenta greater than 20 GeV/$c$ and pseudorapidities between 2.0 and 4.5, is measured to be $\sigma_{pp \to Z \to \tau\tau} = 71.4 \pm 3.5 \pm 2.8 \pm 2.5$ pb; the first uncertainty is statistical, the second uncertainty is systematic, and the third is due to the uncertainty on the integrated luminosity. The ratio of the cross-sections for $Z \to \tau\tau$ to $Z \to \mu\mu$ is determined to be $0.93 \pm 0.09$, where the uncertainty is the combination of statistical, systematic, and luminosity uncertainties of the two measurements. |
| spellingShingle | collaboration, TL Aaij, R Beteta, C Adametz, A Adeva, B Adinolfi, M Adrover, C Affolder, A Ajaltouni, Z Albrecht, J Alessio, F Alexander, M Ali, S Alkhazov, G Cartelle, P Jr, A Amato, S Amhis, Y Anderlini, L Anderson, J Appleby, R Gutierrez, O Archilli, F Artamonov, A Artuso, M A study of the $Z$ production cross-section in $pp$ collisions at $\sqrt{s} = 7$ TeV using tau final states |
| title | A study of the $Z$ production cross-section in $pp$ collisions at
$\sqrt{s} = 7$ TeV using tau final states |
| title_full | A study of the $Z$ production cross-section in $pp$ collisions at
$\sqrt{s} = 7$ TeV using tau final states |
| title_fullStr | A study of the $Z$ production cross-section in $pp$ collisions at
$\sqrt{s} = 7$ TeV using tau final states |
| title_full_unstemmed | A study of the $Z$ production cross-section in $pp$ collisions at
$\sqrt{s} = 7$ TeV using tau final states |
| title_short | A study of the $Z$ production cross-section in $pp$ collisions at
$\sqrt{s} = 7$ TeV using tau final states |
| title_sort | study of the z production cross section in pp collisions at sqrt s 7 tev using tau final states |
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