Search for Higgs boson decays to a photon and a Z boson in pp collisions at √s = 7 and 8 TeV with the ATLAS detector

Autor: Aad, G., Cabrera, Susana, Castillo, Mª Victoria, Costa, María José, Fassi, F., Ferrer, Antonio, Fiorini, L., Fuster, Juan, García García, Carmen, García Navarro, José Enrique, González de la Hoz, Santiago, Hernández Jiménez, Yesenia, Higón, Emilio, Irles Quiles, Adrián, Kaci, Mohamed, King, Margaret K., Lacasta Llácer, Carlos, Lacuesta, Vicente, March, Luis, Martí García, Salvador, Miñano, Mercedes, Mitsou, Vasiliki A., Moles Valls, Regina, Oliver García, Elena, Pedraza López, Sebastián, Pérez García-Estañ, María Teresa, Romero Adam, E., Ros, Eduardo, Salt, José, Soldevila, Urmila, Torró Pastor, Emma, Valero, Alberto, Valladolid Gallego, Eva, Valls Ferrer, Juan Antonio, Villaplana Pérez, Miguel, Vos, Marcel, Zwalinski, L., ATLAS Collaboration
Přispěvatelé: SCOAP
Rok vydání: 2014
Zdroj: Digital.CSIC. Repositorio Institucional del CSIC
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Popis: Aad, G. et al.
A search is reported for a neutral Higgs boson in the decay channel H→Zγ, Z→ℓ+ℓ− (ℓ=e,μ), using 4.5 fb−1 of pp collisions at View the MathML source and 20.3 fb−1 of pp collisions at View the MathML source, recorded by the ATLAS detector at the CERN Large Hadron Collider. The observed distribution of the invariant mass of the three final-state particles, mℓℓγ, is consistent with the Standard Model hypothesis in the investigated mass range of 120–150 GeV. For a Higgs boson with a mass of 125.5 GeV, the observed upper limit at the 95% confidence level is 11 times the Standard Model expectation. Upper limits are set on the cross section times branching ratio of a neutral Higgs boson with mass in the range 120–150 GeV between 0.13 and 0.5 pb for View the MathML source at 95% confidence level.
We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWF and FWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF, DNSRC and Lundbeck Foundation, Denmark; EPLANET, ERC and NSRF, European Union; IN2P3-CNRS, CEA-DSM/IRFU, France; GNSF, Georgia; BMBF, DFG, HGF, MPG and AvH Foundation, Germany; GSRT and NSRF, Greece; ISF, MINERVA, GIF, I-CORE and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; BRF and RCN, Norway; MNiSW and NCN, Poland; GRICES and FCT, Portugal; MNE/IFA, Romania; MES of Russia and ROSATOM, Russian Federation; JINR; MSTD, Serbia; MSSR, Slovakia; ARRS and MIZŠ, Slovenia; DST/NRF, South Africa; MINECO, Spain; SRC and Wallenberg Foundation, Sweden; SER, SNSF and Cantons of Bern and Geneva, Switzerland; NSC, Taiwan; TAEK, Turkey; STFC, the Royal Society and Leverhulme Trust, United Kingdom; DOE and NSF, United States of America.
Databáze: OpenAIRE
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