| 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 | 2014-01-20 | |
| dc.date | 2019-07-03T18:05:04Z | |
| dc.identifier | http://sedici.unlp.edu.ar/handle/10915/77608 | |
| dc.identifier | issn:0370-2693 | |
| dc.description | A measurement of the mass difference between top and anti-top quarks is presented. In a 4.7 fb−1 data sample of proton–proton collisions at √s = 7 TeV recorded with the ATLAS detector at the LHC, events consistent with tt ̄ production and decay into a single charged lepton final state are reconstructed. For each event, the mass difference between the top and anti-top quark candidate is calculated. A two b-tag requirement is used in order to reduce the background contribution. A maximum likelihood fit to these per-event mass differences yields <math><mi mathvariant="normal" is="true">Δ</mi><mi is="true">m</mi><mo is="true">≡</mo><msub is="true"><mrow is="true"><mi is="true">m</mi></mrow><mrow is="true"><mi is="true">t</mi></mrow></msub><mo is="true">−</mo><msub is="true"><mrow is="true"><mi is="true">m</mi></mrow><mrow is="true"><mover accent="true" is="true"><mrow is="true"><mi is="true">t</mi></mrow><mrow is="true"><mo is="true">¯</mo></mrow></mover></mrow></msub><mo is="true">=</mo><mn is="true">0.67</mn><mo is="true">±</mo><mn is="true">0.61</mn><mspace width="0.2em" is="true"></mspace><mo stretchy="false" is="true">(</mo><mtext is="true">stat</mtext><mo stretchy="false" is="true">)</mo><mo is="true">±</mo><mn is="true">0.41</mn><mspace width="0.2em" is="true"></mspace><mo stretchy="false" is="true">(</mo><mtext is="true">syst</mtext><mo stretchy="false" is="true">)</mo><mtext is="true"> GeV</mtext></math>, consistent with CPT invariance. | |
| dc.description | La lista completa de autores puede verse al final del archivo asociado. | |
| dc.description | Instituto de Física La Plata | |
| dc.format | application/pdf | |
| dc.format | 363-379 | |
| dc.language | en | |
| dc.rights | http://creativecommons.org/licenses/by/4.0/ | |
| dc.rights | Creative Commons Attribution 4.0 International (CC BY 4.0) | |
| dc.subject | Física | |
| dc.subject | top quarks | |
| dc.subject | anti-top quarks | |
| dc.subject | pp collisions | |
| dc.subject | ATLAS detector | |
| dc.title | Measurement of the mass difference between top and anti-top quarks in pp collisions at √s = 7 TeV using the ATLAS detector | |
| dc.type | Articulo | |
| dc.type | Articulo | |
