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  1. Article

    Open Access

    Two-loop QCD amplitudes for \( t\overline{t}H \) production from boosted limit

    The production of a Higgs boson in association with a top-antitop quark pair t ...

    Guoxing Wang, Tianya **a, Li Lin Yang, ** Ye in Journal of High Energy Physics (2024)

  2. Article

    Open Access

    Search for the \( {B}_s^0 \) → μ+μγ decay

    A search for the fully reconstructed B s 0 ...

    R. Aaij, A. S. W. Abdelmotteleb, C. Abellan Beteta in Journal of High Energy Physics (2024)

  3. Article

    Open Access

    Measurement of e+eωη′ cross sections at \( \sqrt{s} \) = 2.000 to 3.080 GeV

    We measured the Born cross sections for the process e+eωη′ at 22 center-of-mass energies from 2.000 to 3.080 GeV with the BESIII detector at the BEPCII collider. We observed a resonant structure with a statis...

    M. Ablikim, M. N. Achasov, P. Adlarson, X. C. Ai in Journal of High Energy Physics (2024)

  4. No Access

    Article

    Experimental demonstration of attosecond pump–probe spectroscopy with an X-ray free-electron laser

    Pump–probe experiments with subfemtosecond resolution are the key to understanding electronic dynamics in quantum systems. Here we demonstrate the generation and control of subfemtosecond pulse pairs from a tw...

    Zhaoheng Guo, Taran Driver, Sandra Beauvarlet, David Cesar in Nature Photonics (2024)

  5. No Access

    Article

    Terawatt-scale attosecond X-ray pulses from a cascaded superradiant free-electron laser

    Intense attosecond X-ray pulses are key for ultrafast nonlinear spectroscopy and diffractive imaging. Here we demonstrate the generation of terawatt-scale isolated attosecond pulses with a two-stage cascaded X...

    Paris Franz, Siqi Li, Taran Driver, River R. Robles, David Cesar in Nature Photonics (2024)

  6. Article

    Open Access

    Search for long-lived heavy neutrinos in the decays of B mesons produced in proton-proton collisions at \( \sqrt{s} \) = 13 TeV

    A search for long-lived heavy neutrinos (N) in the decays of B mesons produced in proton-proton collisions at ...

    A. Hayrapetyan, A. Tumasyan, W. Adam, J. W. Andrejkovic in Journal of High Energy Physics (2024)

  7. Article

    Open Access

    Measurements of electroweak W±Z boson pair production in association with two jets in pp collisions at \( \sqrt{s} \) = 13 TeV with the ATLAS detector

    Measurements of integrated and differential cross-sections for electroweak W±Z production in association with two jets (W±Zjj) in proton-proton collisions are presented. The data collected by the ATLAS detector a...

    G. Aad, E. Aakvaag, B. Abbott, S. Abdelhameed, K. Abeling in Journal of High Energy Physics (2024)

  8. Article

    Open Access

    Search for central exclusive production of top quark pairs in proton-proton collisions at \( \sqrt{s} \) = 13 TeV with tagged protons

    A search for the central exclusive production of top quark-antiquark pairs ( t t ...

    A. Tumasyan, W. Adam, J. W. Andrejkovic, T. Bergauer in Journal of High Energy Physics (2024)

  9. Article

    Open Access

    Search for heavy neutral leptons in final states with electrons, muons, and hadronically decaying tau leptons in proton-proton collisions at \( \sqrt{s} \) = 13 TeV

    A search for heavy neutral leptons (HNLs) of Majorana or Dirac type using proton-proton collision data at ...

    A. A. Hayrapetyan, A. Tumasyan, W. Adam in Journal of High Energy Physics (2024)

  10. Article

    Open Access

    Amplitude analysis of the \( {\Lambda}_{\textrm{b}}^0\to {\textrm{pK}}^{-}\upgamma \) decay

    The resonant structure of the radiative decay Λ b 0 ...

    R. Aaij, A. S. W. Abdelmotteleb, C. Abellan Beteta in Journal of High Energy Physics (2024)

  11. Article

    Open Access

    Search for the decay of the Higgs boson to a pair of light pseudoscalar bosons in the final state with four bottom quarks in proton-proton collisions at \( \sqrt{\textrm{s}} \) = 13 TeV

    A search is presented for the decay of the 125 GeV Higgs boson (H) to a pair of new light pseudoscalar bosons (a), followed by the prompt decay of each a boson to a bottom quark-antiquark pair,

    A. Hayrapetyan, A. Tumasyan, W. Adam, J. W. Andrejkovic in Journal of High Energy Physics (2024)

  12. Article

    Open Access

    Measurement of absolute branching fractions of \( {\textrm{D}}_{\textrm{s}}^{+} \) hadronic decays

    Using e+e collision data collected at the BESIII detector at center-of-mass energies between 4.128 and 4.226 GeV, corresponding to an integrated luminosity of 7.33 fb1, we determine the absolute branching fract...

    M. Ablikim, M. N. Achasov, P. Adlarson, O. Afedulidis in Journal of High Energy Physics (2024)

  13. Article

    Open Access

    Search for a new resonance decaying into two spin-0 bosons in a final state with two photons and two bottom quarks in proton-proton collisions at \( \sqrt{s} \) = 13 TeV

    A search for a new boson X is presented using CERN LHC proton-proton collision data collected by the CMS experiment at ...

    A. Tumasyan, W. Adam, J. W. Andrejkovic, T. Bergauer in Journal of High Energy Physics (2024)

  14. No Access

    Article

    Generating stationary entanglement and one-way steering in a hybrid cavity electro-optomechanical system via a squeezed vacuum field

    We propose a scheme to generate robust bipartite entanglement, genuine tripartite entanglement, and one-way steering in a hybrid cavity electro-optomechanical system with the help of a squeezed vacuum field. T...

    Song-Lin Yang, **n Wang, Ang Li, Jian-Song Zhang in Quantum Information Processing (2024)

  15. Article

    Open Access

    Measurement of t-channel production of single top quarks and antiquarks in pp collisions at 13 TeV using the full ATLAS Run 2 data sample

    The production of single top quarks and top antiquarks via the t-channel exchange of a virtual W boson is measured in proton-proton collisions at a centre-of-mass energy of 13 TeV at the LHC using 140 fb1 of ATL...

    G. Aad, B. Abbott, K. Abeling, N. J. Abicht, S. H. Abidi in Journal of High Energy Physics (2024)

  16. Article

    Open Access

    Search for a third-generation leptoquark coupled to a τ lepton and a b quark through single, pair, and nonresonant production in proton-proton collisions at \( \sqrt{s} \) = 13 TeV

    A search is presented for a third-generation leptoquark (LQ) coupled exclusively to a τ lepton and a b quark. The search is based on proton-proton collision data at a center-of-mass energy of 13 TeV recorded w...

    A. Hayrapetyan, A. Tumasyan, W. Adam, J. W. Andrejkovic in Journal of High Energy Physics (2024)

  17. Article

    Open Access

    Measurements of the branching fraction ratio \( \mathcal{B}\left(\phi \to {\mu}^{+}{\mu}^{-}\right)/\mathcal{B}\left(\phi \to {\textrm{e}}^{+}{\textrm{e}}^{-}\right) \) with charm meson decays

    Measurements of the branching fraction ratio B ϕ ...

    R. Aaij, A. S. W. Abdelmotteleb, C. Abellan Beteta in Journal of High Energy Physics (2024)

  18. Article

    Open Access

    Search for new particles in final states with a boosted top quark and missing transverse momentum in proton-proton collisions at \( \sqrt{s} \) = 13 TeV with the ATLAS detector

    A search for events with one top quark and missing transverse momentum in the final state is presented. The fully hadronic decay of the top quark is explored by selecting events with a reconstructed boosted to...

    G. Aad, B. Abbott, K. Abeling, N. J. Abicht, S. H. Abidi in Journal of High Energy Physics (2024)

  19. Article

    Open Access

    Measurement of associated J/ψ-ψ(2S) production cross-section in pp collisions at \( \sqrt{s} \) = 13 TeV

    The cross-section of associated J/ψ-ψ(2S) production in proton-proton collisions at a centre-of-mass energy of ...

    R. Aaij, A. S. W. Abdelmotteleb, C. Abellan Beteta in Journal of High Energy Physics (2024)

  20. Article

    Open Access

    A measurement of ∆Γs

    Using a dataset corresponding to 9 fb1 of integrated luminosity collected with the LHCb detector between 2011 and 2018 in proton-proton collisions, the decay-time distributions of the decay modes ...

    R. Aaij, A. S. W. Abdelmotteleb, C. Abellan Beteta in Journal of High Energy Physics (2024)

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