| dc.creator | Alconada Verzini, María Josefina | |
| dc.creator | Alonso, Francisco | |
| dc.creator | Anduaga, Xabier Sebastián | |
| dc.creator | Monticelli, Fernando Gabriel | |
| dc.creator | Tripiana, Martín F. | |
| dc.creator | The ATLAS Collaboration | |
| dc.date | 2014-05 | |
| dc.date | 2019-07-17T18:39:31Z | |
| dc.identifier | http://sedici.unlp.edu.ar/handle/10915/78402 | |
| dc.identifier | issn:1079-7114 | |
| dc.description | A search for evidence of invisible-particle decay modes of a Higgs boson produced in association with a Z boson at the Large Hadron Collider is presented. No deviation from the Standard Model expectation is observed in 4:5 fb-1 (20:3 fb-1) of 7 (8) TeV pp collision data collected by the ATLAS experiment. Assuming the Standard Model rate for ZH production, an upper limit of 75%, at the 95% confidence level is set on the branching ratio to invisible-particle decay modes of the Higgs boson at a mass of 125.5 GeV. The limit on the branching ratio is also interpreted in terms of an upper limit on the allowed dark matter–nucleon scattering cross section within a Higgs-portal dark matter scenario. Within the constraints of such a scenario, the results presented in this Letter provide the strongest available limits for low-mass dark matter candidates. Limits are also set on an additional neutral Higgs boson, in the mass range 110 < mH < 400 GeV, produced in association with a Z boson and decaying to invisible particles. | |
| dc.description | Facultad de Ciencias Exactas | |
| dc.format | application/pdf | |
| dc.language | en | |
| dc.rights | http://creativecommons.org/licenses/by/3.0/ | |
| dc.rights | Creative Commons Attribution 3.0 Unported (CC BY 3.0) | |
| dc.subject | Ciencias Exactas | |
| dc.subject | higgs boson | |
| dc.subject | z boson | |
| dc.subject | large hadron collider | |
| dc.subject | Física | |
| dc.title | Search for invisible decays of a Higgs boson produced in association with a Z boson in ATLAS | |
| dc.type | Articulo | |
| dc.type | Articulo | |
