Search for Higgs boson pair production in the bb¯bb¯ final state from pp collisions at √s = 8 TeVwith the ATLAS detector

The ATLAS collaboration

    Research output: Contribution to journalArticle

    Abstract

    A search for Higgs boson pair production pp → hh is performed with 19.5 fb-1 of proton–proton collision data at √s=8 TeV, which were recorded by the ATLAS detector at the Large Hadron Collider in 2012. The decay products of each Higgs boson are reconstructed as a high-momentum bb¯ system with either a pair of small-radius jets or a single large-radius jet, the latter exploiting jet substructure techniques and associated b-tagged track-jets. No evidence for resonant or non-resonant Higgs boson pair production is observed. The data are interpreted in the context of the Randall–Sundrum model with a warped extra dimension as well as the two-Higgs-doublet model. An upper limit on the cross-section for pp → GKK → hh → bb¯bb¯ of 3.2 (2.3) fb is set for a Kaluza–Klein graviton GKK mass of 1.0 (1.5) TeV, at the 95 % confidence level. The search for non-resonant Standard Model hh production sets an observed 95 % confidence level upper limit on the production cross-section σ(pp → hh → bb¯bb¯) of 202 fb, compared to a Standard Model prediction of σ(pp → hh → bb¯bb¯)=3.6±0.5 fb.

    Original languageEnglish (US)
    Article number412
    JournalEuropean Physical Journal C
    Volume75
    Issue number9
    DOIs
    StatePublished - Sep 13 2015

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    Bosons
    pair production
    Higgs bosons
    Detectors
    collisions
    detectors
    confidence
    radii
    Colliding beam accelerators
    cross sections
    gravitons
    substructures
    Momentum
    momentum
    decay
    products
    predictions

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)
    • Engineering (miscellaneous)

    Cite this

    Search for Higgs boson pair production in the bb¯bb¯ final state from pp collisions at √s = 8 TeVwith the ATLAS detector. / The ATLAS collaboration.

    In: European Physical Journal C, Vol. 75, No. 9, 412, 13.09.2015.

    Research output: Contribution to journalArticle

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    title = "Search for Higgs boson pair production in the bb¯bb¯ final state from pp collisions at √s = 8 TeVwith the ATLAS detector",
    abstract = "A search for Higgs boson pair production pp → hh is performed with 19.5 fb-1 of proton–proton collision data at √s=8 TeV, which were recorded by the ATLAS detector at the Large Hadron Collider in 2012. The decay products of each Higgs boson are reconstructed as a high-momentum bb¯ system with either a pair of small-radius jets or a single large-radius jet, the latter exploiting jet substructure techniques and associated b-tagged track-jets. No evidence for resonant or non-resonant Higgs boson pair production is observed. The data are interpreted in the context of the Randall–Sundrum model with a warped extra dimension as well as the two-Higgs-doublet model. An upper limit on the cross-section for pp → GKK ∗ → hh → bb¯bb¯ of 3.2 (2.3) fb is set for a Kaluza–Klein graviton GKK ∗ mass of 1.0 (1.5) TeV, at the 95 {\%} confidence level. The search for non-resonant Standard Model hh production sets an observed 95 {\%} confidence level upper limit on the production cross-section σ(pp → hh → bb¯bb¯) of 202 fb, compared to a Standard Model prediction of σ(pp → hh → bb¯bb¯)=3.6±0.5 fb.",
    author = "{ATLAS Collaboration}, Collaboration and G. Aad and B. Abbott and J. Abdallah and O. Abdinov and R. Aben and M. Abolins and AbouZeid, {O. S.} and H. Abramowicz and H. Abreu and R. Abreu and Y. Abulaiti and Acharya, {B. S.} and L. Adamczyk and Adams, {D. L.} and J. Adelman and S. Adomeit and T. Adye and Affolder, {A. A.} and T. Agatonovic-Jovin and Aguilar-Saavedra, {J. A.} and Ahlen, {S. P.} and F. Ahmadov and G. Aielli and H. Akerstedt and {\AA}kesson, {T. P A} and G. Akimoto and Akimov, {A. V.} and Alberghi, {G. L.} and J. Albert and S. Albrand and {Alconada Verzini}, {M. J.} and M. Aleksa and Aleksandrov, {I. N.} and C. Alexa and G. Alexander and T. Alexopoulos and M. Alhroob and G. Alimonti and L. Alio and J. Alison and Alkire, {S. P.} and Allbrooke, {B. M M} and Allport, {P. P.} and A. Aloisio and A. Alonso and F. Alonso and K. Cranmer and A. Haas and Mincer, {A. I.} and P. Nemethy",
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    AU - The ATLAS collaboration

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    AU - Abdallah, J.

    AU - Abdinov, O.

    AU - Aben, R.

    AU - Abolins, M.

    AU - AbouZeid, O. S.

    AU - Abramowicz, H.

    AU - Abreu, H.

    AU - Abreu, R.

    AU - Abulaiti, Y.

    AU - Acharya, B. S.

    AU - Adamczyk, L.

    AU - Adams, D. L.

    AU - Adelman, J.

    AU - Adomeit, S.

    AU - Adye, T.

    AU - Affolder, A. A.

    AU - Agatonovic-Jovin, T.

    AU - Aguilar-Saavedra, J. A.

    AU - Ahlen, S. P.

    AU - Ahmadov, F.

    AU - Aielli, G.

    AU - Akerstedt, H.

    AU - Åkesson, T. P A

    AU - Akimoto, G.

    AU - Akimov, A. V.

    AU - Alberghi, G. L.

    AU - Albert, J.

    AU - Albrand, S.

    AU - Alconada Verzini, M. J.

    AU - Aleksa, M.

    AU - Aleksandrov, I. N.

    AU - Alexa, C.

    AU - Alexander, G.

    AU - Alexopoulos, T.

    AU - Alhroob, M.

    AU - Alimonti, G.

    AU - Alio, L.

    AU - Alison, J.

    AU - Alkire, S. P.

    AU - Allbrooke, B. M M

    AU - Allport, P. P.

    AU - Aloisio, A.

    AU - Alonso, A.

    AU - Alonso, F.

    AU - Cranmer, K.

    AU - Haas, A.

    AU - Mincer, A. I.

    AU - Nemethy, P.

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    N2 - A search for Higgs boson pair production pp → hh is performed with 19.5 fb-1 of proton–proton collision data at √s=8 TeV, which were recorded by the ATLAS detector at the Large Hadron Collider in 2012. The decay products of each Higgs boson are reconstructed as a high-momentum bb¯ system with either a pair of small-radius jets or a single large-radius jet, the latter exploiting jet substructure techniques and associated b-tagged track-jets. No evidence for resonant or non-resonant Higgs boson pair production is observed. The data are interpreted in the context of the Randall–Sundrum model with a warped extra dimension as well as the two-Higgs-doublet model. An upper limit on the cross-section for pp → GKK ∗ → hh → bb¯bb¯ of 3.2 (2.3) fb is set for a Kaluza–Klein graviton GKK ∗ mass of 1.0 (1.5) TeV, at the 95 % confidence level. The search for non-resonant Standard Model hh production sets an observed 95 % confidence level upper limit on the production cross-section σ(pp → hh → bb¯bb¯) of 202 fb, compared to a Standard Model prediction of σ(pp → hh → bb¯bb¯)=3.6±0.5 fb.

    AB - A search for Higgs boson pair production pp → hh is performed with 19.5 fb-1 of proton–proton collision data at √s=8 TeV, which were recorded by the ATLAS detector at the Large Hadron Collider in 2012. The decay products of each Higgs boson are reconstructed as a high-momentum bb¯ system with either a pair of small-radius jets or a single large-radius jet, the latter exploiting jet substructure techniques and associated b-tagged track-jets. No evidence for resonant or non-resonant Higgs boson pair production is observed. The data are interpreted in the context of the Randall–Sundrum model with a warped extra dimension as well as the two-Higgs-doublet model. An upper limit on the cross-section for pp → GKK ∗ → hh → bb¯bb¯ of 3.2 (2.3) fb is set for a Kaluza–Klein graviton GKK ∗ mass of 1.0 (1.5) TeV, at the 95 % confidence level. The search for non-resonant Standard Model hh production sets an observed 95 % confidence level upper limit on the production cross-section σ(pp → hh → bb¯bb¯) of 202 fb, compared to a Standard Model prediction of σ(pp → hh → bb¯bb¯)=3.6±0.5 fb.

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