| dc.creator | Alconada Verzini, María Josefina | |
| dc.creator | Alonso, Francisco | |
| dc.creator | Anduaga, Xabier Sebastián | |
| dc.creator | Dova, María Teresa | |
| dc.creator | Monticelli, Fernando Gabriel | |
| dc.creator | Tripiana, Martín Fernando | |
| dc.creator | The ATLAS Collaboration | |
| dc.date | 2014 | |
| dc.date | 2020-10-09T12:33:36Z | |
| dc.date.accessioned | 2023-07-14T22:47:26Z | |
| dc.date.available | 2023-07-14T22:47:26Z | |
| dc.identifier | http://sedici.unlp.edu.ar/handle/10915/106598 | |
| dc.identifier | http://europepmc.org/backend/ptpmcrender.fcgi?accid=PMC4370855&blobtype=pdf | |
| dc.identifier | issn:1434-6044 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/7448217 | |
| dc.description | A search is presented for direct top squark pair production using events with at least two leptons including a same-flavour opposite-sign pair with invariant mass consistent with the Z boson mass, jets tagged as originating from b-quarks and missing transverse momentum. The analysis is performed with proton–proton collision data at √s = 8 TeV collected with the ATLAS detector at the LHC in 2012 corresponding to an integrated luminosity of 20.3 fb−1. No excess beyond the Standard Model expectation is observed. Interpretations of the results are provided in models based on the direct pair production of the heavier top squark state (t ˜ 2) followed by the decay to the lighter top squark state (t ˜ 1) via t ˜ 2 → Zt ˜ 1, and for t ˜ 1 pair production in natural gaugemediated supersymmetry breaking scenarios where the neutralino (χ˜ 0 1 ) is the next-to-lightest supersymmetric particle and decays producing a Z boson and a gravitino (G˜ ) via the χ˜ 0 1 → ZG˜ process. | |
| dc.description | La lista completa de autores puede verse en el archivo asociado. | |
| dc.description | Instituto de Física La Plata | |
| dc.format | application/pdf | |
| dc.language | en | |
| dc.rights | http://creativecommons.org/licenses/by-nc-sa/4.0/ | |
| dc.rights | Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) | |
| dc.subject | Física | |
| dc.title | Search for direct top squark pair production in events with a Z boson, b-jets and missing transverse momentum in √s = 8 TeV pp collisions with the ATLAS detector | |
| dc.type | Articulo | |
| dc.type | Articulo | |
