Publication
Search for new physics in events with two soft oppositely charged leptons and missing transverse momentum in proton-proton collisions at $\sqrt{s}=$ 13 TeV
| dc.contributor.author | CMS collaboration (2285 authors) | |
| dc.contributor.author | Nayak, Aruna | |
| dc.contributor.author | Bargassa, Pedrame | |
| dc.contributor.author | Beirão Da Cruz E Silva, Cristóvão | |
| dc.contributor.author | Di Francesco, Agostino | |
| dc.contributor.author | Faccioli, Pietro | |
| dc.contributor.author | Galinhas, Bruno | |
| dc.contributor.author | Gallinaro, Michele | |
| dc.contributor.author | Hollar, Jonathan | |
| dc.contributor.author | Leonardo, Nuno | |
| dc.contributor.author | Lloret Iglesias, Lara | |
| dc.contributor.author | Seixas, Joao | |
| dc.contributor.author | Strong, Giles | |
| dc.contributor.author | Toldaiev, Oleksii | |
| dc.contributor.author | Vadruccio, Daniele | |
| dc.contributor.author | Varela, Joao | |
| dc.contributor.author | Vischia, Pietro | |
| dc.contributor.author | David Tinoco Mendes, Andre | |
| dc.contributor.author | Silva, Pedro | |
| dc.contributor.author | Musella, Pasquale | |
| dc.date.accessioned | 2019-02-05T15:47:47Z | |
| dc.date.available | 2019-02-05T15:47:47Z | |
| dc.date.issued | 2018-05-25 | |
| dc.date.updated | 2019-02-05T15:47:47Z | |
| dc.description.abstract | A search is presented for new physics in events with two low-momentum, oppositely charged leptons (electrons or muons) and missing transverse momentum in proton-proton collisions at a centre-of-mass energy of 13 TeV. The data collected using the CMS detector at the LHC correspond to an integrated luminosity of 35.9 fb−1 . The observed event yields are consistent with the expectations from the standard model. The results are interpreted in terms of pair production of charginos and neutralinos ( χ˜1± and χ˜20 ) with nearly degenerate masses, as expected in natural supersymmetry models with light higgsinos, as well as in terms of the pair production of top squarks ( t˜ ), when the lightest neutralino and the top squark have similar masses. At 95% confidence level, wino-like χ˜1±/χ˜20 masses are excluded up to 230 GeV for a mass difference of 20 GeV relative to the lightest neutralino. In the higgsino-like model, masses are excluded up to 168 GeV for the same mass difference. For t˜ pair production, top squark masses up to 450 GeV are excluded for a mass difference of 40 GeV relative to the lightest neutralino. | |
| dc.description.version | Peer Reviewed | |
| dc.identifier | Phys.Lett. B782 (2018) 440-467; DOI 10.1016/j.physletb.2018.05.062 | |
| dc.identifier.uri | http://dx.doi.org/10.1016/j.physletb.2018.05.062 | |
| dc.identifier.uri | http://hdl.handle.net/10400.26/27550 | |
| dc.language.iso | eng | |
| dc.relation | Advanced Multi-Variate Analysis for New Physics Searches at the LHC | |
| dc.title | Search for new physics in events with two soft oppositely charged leptons and missing transverse momentum in proton-proton collisions at $\sqrt{s}=$ 13 TeV | |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.awardTitle | Advanced Multi-Variate Analysis for New Physics Searches at the LHC | |
| oaire.awardURI | info:eu-repo/grantAgreement/EC/H2020/675440/EU | |
| oaire.fundingStream | H2020 | |
| project.funder.identifier | http://doi.org/10.13039/501100008530 | |
| project.funder.name | European Commission | |
| rcaap.rights | openAccess | pt |
| rcaap.type | article | |
| relation.isProjectOfPublication | d1fe0247-7df8-4eac-ad17-2d56bfcafa24 | |
| relation.isProjectOfPublication.latestForDiscovery | d1fe0247-7df8-4eac-ad17-2d56bfcafa24 |