IFLP   13074
INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
artículos
Título:
Combination of searches for Higgs boson pairs in pp collisions at 13 TeV with the ATLAS detector
Autor/es:
ATLAS COLLABORATION, G. AAD, MT DOVA ET AL
Revista:
PHYSICS LETTERS B
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2020
ISSN:
0370-2693
Resumen:
This letter presents a combination of searches for Higgs boson pair production using up to 36.1fb−1of proton?proton collision data at a centre-of-mass energy √s=13 TeV recorded with the ATLAS detector at the LHC. The combination is performed using six analyses searching for Higgs boson pairs decaying into the b ̄bb ̄b, b ̄bW+W−, b ̄bτ+τ−, W+W−W+W−, b ̄bγγand W+W−γγfinal states. Results are presented for non-resonant and resonant Higgs boson pair production modes. No statistically significant excess in data above the Standard Model predictions is found. The combined observed (expected) limit at 95% confidence level on the non-resonant Higgs boson pair production cross-section is 6.9(10) times the predicted Standard Model cross-section. Limits are also set on the ratio (κλ) of the Higgs boson self-coupling to its Standard Model value. This ratio is constrained at 95% confidence level in observation (expectation) to −5.0