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Search for resonant and non-resonant Higgs boson pair production in the ${b\bar{b}\tau^+\tau^-}$ decay channel in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector. / The ATLAS collaboration ; Barton, Adam Edward; Bertram, Iain Alexander et al.
In: Physical review letters, Vol. 121, No. 19, 191801, 09.11.2018.Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Search for resonant and non-resonant Higgs boson pair production in the ${b\bar{b}\tau^+\tau^-}$ decay channel in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
AU - The ATLAS collaboration
AU - Barton, Adam Edward
AU - Bertram, Iain Alexander
AU - Borissov, Guennadi
AU - Bouhova-Thacker, Evelina Vassileva
AU - Fox, Harald
AU - Henderson, Robert Charles William
AU - Jones, Roger William Lewis
AU - Kartvelishvili, Vakhtang
AU - Long, Robin Eamonn
AU - Love, Peter Allan
AU - Muenstermann, Daniel Matthias Alfred
AU - Parker, Adam Jackson
AU - Ristić, B.
AU - Smizanska, Maria
AU - Tee, Amy
AU - Walder, James William
AU - Wharton, Andrew Mark
AU - Whitmore, Ben
PY - 2018/11/9
Y1 - 2018/11/9
N2 - A search for resonant and non-resonant pair production of Higgs bosons in the$b\bar{b}\tau^+\tau^-$ final state is presented. The search uses 36.1 fb$^{-1}$ of $pp$ collision data with $\sqrt{s}$ = 13 TeV recorded by the ATLAS experiment at the LHC in 2015 and 2016. Decays of the $\tau$-lepton pairs with at least one $\tau$-lepton decaying to final states with hadrons and a neutrino are considered. No significant excess above the expected background is observed in the data. The cross-section times branching ratio for non-resonant Higgs boson pair production is constrained to be less than 30.9 fb, 12.7 times the Standard Model expectation, at 95% confidence level. The data are also analyzed to probe resonant Higgs boson pair production, constraining a model with an extended Higgs sector based on two doublets and a Randall--Sundrum bulk graviton model. Upper limits are placed on the resonant Higgs boson pair production cross-section times branching ratio, excluding resonances $X$ in the mass range 305 GeV < $m_X$ < 402 GeV in the simplified hMSSM minimal supersymmetric model for $\tan\beta=2$ and excluding bulk Randall--Sundrum gravitons $G_{KK}$ in the mass range 325 GeV < $m_{G_{KK}}$ < 885 GeV for $k/\overline{M}_{Pl} = 1$.
AB - A search for resonant and non-resonant pair production of Higgs bosons in the$b\bar{b}\tau^+\tau^-$ final state is presented. The search uses 36.1 fb$^{-1}$ of $pp$ collision data with $\sqrt{s}$ = 13 TeV recorded by the ATLAS experiment at the LHC in 2015 and 2016. Decays of the $\tau$-lepton pairs with at least one $\tau$-lepton decaying to final states with hadrons and a neutrino are considered. No significant excess above the expected background is observed in the data. The cross-section times branching ratio for non-resonant Higgs boson pair production is constrained to be less than 30.9 fb, 12.7 times the Standard Model expectation, at 95% confidence level. The data are also analyzed to probe resonant Higgs boson pair production, constraining a model with an extended Higgs sector based on two doublets and a Randall--Sundrum bulk graviton model. Upper limits are placed on the resonant Higgs boson pair production cross-section times branching ratio, excluding resonances $X$ in the mass range 305 GeV < $m_X$ < 402 GeV in the simplified hMSSM minimal supersymmetric model for $\tan\beta=2$ and excluding bulk Randall--Sundrum gravitons $G_{KK}$ in the mass range 325 GeV < $m_{G_{KK}}$ < 885 GeV for $k/\overline{M}_{Pl} = 1$.
KW - Higgs bosons
KW - Spontaneous symmetry breaking
KW - Hypothetical scalars
KW - Extension of Higgs sector
U2 - 10.1103/PhysRevLett.121.191801
DO - 10.1103/PhysRevLett.121.191801
M3 - Journal article
VL - 121
JO - Physical review letters
JF - Physical review letters
SN - 1079-7114
IS - 19
M1 - 191801
ER -