Search for narrow resonances in dilepton mass spectra in pp collisions at s=7TeV
A search for narrow, high-mass resonances decaying to electron or muon pairs has been performed using pp collision data collected at s=7TeV by the CMS experiment in 2011. The data sample corresponds to an integrated luminosity of approximately 5 fb -1. The event yields observed in the signal regions...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Journal article |
| Published: |
2012
|
| _version_ | 1797073283855679488 |
|---|---|
| author | Chatrchyan, S Khachatryan, V Sirunyan, A Tumasyan, A Adam, W Bergauer, T Dragicevic, M Erö, J Fabjan, C Friedl, M Frühwirth, R Ghete, V Hammer, J Hörmann, N Hrubec, J Jeitler, M Kiesenhofer, W Knünz, V Krammer, M Liko, D Mikulec, I Pernicka, M Rahbaran, B Rohringer, C Rohringer, H |
| author_facet | Chatrchyan, S Khachatryan, V Sirunyan, A Tumasyan, A Adam, W Bergauer, T Dragicevic, M Erö, J Fabjan, C Friedl, M Frühwirth, R Ghete, V Hammer, J Hörmann, N Hrubec, J Jeitler, M Kiesenhofer, W Knünz, V Krammer, M Liko, D Mikulec, I Pernicka, M Rahbaran, B Rohringer, C Rohringer, H |
| author_sort | Chatrchyan, S |
| collection | OXFORD |
| description | A search for narrow, high-mass resonances decaying to electron or muon pairs has been performed using pp collision data collected at s=7TeV by the CMS experiment in 2011. The data sample corresponds to an integrated luminosity of approximately 5 fb -1. The event yields observed in the signal regions are consistent with predictions of the standard model backgrounds, and upper limits on the cross section times branching fraction for a resonance decaying to dileptons are extracted from a shape analysis of the dilepton invariant mass distribution. The resulting mass limits at 95% confidence level are 2330 GeV for the Z ' in the Sequential Standard Model, 2000 GeV for the superstring-inspired Z ψ ' resonance, 890 (540) GeV for the Stueckelberg extension Z St ' with the mass parameter ε=0.06 (0.04), and 2140 (1810) GeV for Kaluza-Klein gravitons with the coupling parameter k/M- Pl of 0.10 (0.05). These limits are the most stringent to date. © 2012 Elsevier B.V. |
| first_indexed | 2024-03-06T23:19:51Z |
| format | Journal article |
| id | oxford-uuid:685f4fcb-46ff-42a1-86de-eeace9fd73af |
| institution | University of Oxford |
| last_indexed | 2024-03-06T23:19:51Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | oxford-uuid:685f4fcb-46ff-42a1-86de-eeace9fd73af2022-03-26T18:44:26ZSearch for narrow resonances in dilepton mass spectra in pp collisions at s=7TeVJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:685f4fcb-46ff-42a1-86de-eeace9fd73afSymplectic Elements at Oxford2012Chatrchyan, SKhachatryan, VSirunyan, ATumasyan, AAdam, WBergauer, TDragicevic, MErö, JFabjan, CFriedl, MFrühwirth, RGhete, VHammer, JHörmann, NHrubec, JJeitler, MKiesenhofer, WKnünz, VKrammer, MLiko, DMikulec, IPernicka, MRahbaran, BRohringer, CRohringer, HA search for narrow, high-mass resonances decaying to electron or muon pairs has been performed using pp collision data collected at s=7TeV by the CMS experiment in 2011. The data sample corresponds to an integrated luminosity of approximately 5 fb -1. The event yields observed in the signal regions are consistent with predictions of the standard model backgrounds, and upper limits on the cross section times branching fraction for a resonance decaying to dileptons are extracted from a shape analysis of the dilepton invariant mass distribution. The resulting mass limits at 95% confidence level are 2330 GeV for the Z ' in the Sequential Standard Model, 2000 GeV for the superstring-inspired Z ψ ' resonance, 890 (540) GeV for the Stueckelberg extension Z St ' with the mass parameter ε=0.06 (0.04), and 2140 (1810) GeV for Kaluza-Klein gravitons with the coupling parameter k/M- Pl of 0.10 (0.05). These limits are the most stringent to date. © 2012 Elsevier B.V. |
| spellingShingle | Chatrchyan, S Khachatryan, V Sirunyan, A Tumasyan, A Adam, W Bergauer, T Dragicevic, M Erö, J Fabjan, C Friedl, M Frühwirth, R Ghete, V Hammer, J Hörmann, N Hrubec, J Jeitler, M Kiesenhofer, W Knünz, V Krammer, M Liko, D Mikulec, I Pernicka, M Rahbaran, B Rohringer, C Rohringer, H Search for narrow resonances in dilepton mass spectra in pp collisions at s=7TeV |
| title | Search for narrow resonances in dilepton mass spectra in pp collisions at s=7TeV |
| title_full | Search for narrow resonances in dilepton mass spectra in pp collisions at s=7TeV |
| title_fullStr | Search for narrow resonances in dilepton mass spectra in pp collisions at s=7TeV |
| title_full_unstemmed | Search for narrow resonances in dilepton mass spectra in pp collisions at s=7TeV |
| title_short | Search for narrow resonances in dilepton mass spectra in pp collisions at s=7TeV |
| title_sort | search for narrow resonances in dilepton mass spectra in pp collisions at s 7tev |
| work_keys_str_mv | AT chatrchyans searchfornarrowresonancesindileptonmassspectrainppcollisionsats7tev AT khachatryanv searchfornarrowresonancesindileptonmassspectrainppcollisionsats7tev AT sirunyana searchfornarrowresonancesindileptonmassspectrainppcollisionsats7tev AT tumasyana searchfornarrowresonancesindileptonmassspectrainppcollisionsats7tev AT adamw searchfornarrowresonancesindileptonmassspectrainppcollisionsats7tev AT bergauert searchfornarrowresonancesindileptonmassspectrainppcollisionsats7tev AT dragicevicm searchfornarrowresonancesindileptonmassspectrainppcollisionsats7tev AT eroj searchfornarrowresonancesindileptonmassspectrainppcollisionsats7tev AT fabjanc searchfornarrowresonancesindileptonmassspectrainppcollisionsats7tev AT friedlm searchfornarrowresonancesindileptonmassspectrainppcollisionsats7tev AT fruhwirthr searchfornarrowresonancesindileptonmassspectrainppcollisionsats7tev AT ghetev searchfornarrowresonancesindileptonmassspectrainppcollisionsats7tev AT hammerj searchfornarrowresonancesindileptonmassspectrainppcollisionsats7tev AT hormannn searchfornarrowresonancesindileptonmassspectrainppcollisionsats7tev AT hrubecj searchfornarrowresonancesindileptonmassspectrainppcollisionsats7tev AT jeitlerm searchfornarrowresonancesindileptonmassspectrainppcollisionsats7tev AT kiesenhoferw searchfornarrowresonancesindileptonmassspectrainppcollisionsats7tev AT knunzv searchfornarrowresonancesindileptonmassspectrainppcollisionsats7tev AT krammerm searchfornarrowresonancesindileptonmassspectrainppcollisionsats7tev AT likod searchfornarrowresonancesindileptonmassspectrainppcollisionsats7tev AT mikuleci searchfornarrowresonancesindileptonmassspectrainppcollisionsats7tev AT pernickam searchfornarrowresonancesindileptonmassspectrainppcollisionsats7tev AT rahbaranb searchfornarrowresonancesindileptonmassspectrainppcollisionsats7tev AT rohringerc searchfornarrowresonancesindileptonmassspectrainppcollisionsats7tev AT rohringerh searchfornarrowresonancesindileptonmassspectrainppcollisionsats7tev |