Výsledky vyhledávání - "Particle Physics"
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FLAG Review 2021
ISSN: 1434-6052, 1434-6044, 1434-6052Vydáno: Berlin/Heidelberg Springer Berlin Heidelberg 04.10.2022Vydáno v The European physical journal. C, Particles and fields (04.10.2022)“…We review lattice results related to pion, kaon, D -meson, B -meson, and nucleon physics with the aim of making them easily accessible to the nuclear and…”
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Test of Lepton-Flavor Universality in B→K∗ℓ+ℓ− Decays at Belle
ISSN: 0031-9007, 1079-7114, 1079-7114Vydáno: United States American Physical Society 23.04.2021Vydáno v Physical review letters (23.04.2021)“…We present a measurement of R_{K^{*}}, the branching fraction ratio B(B→K^{*}μ^{+}μ^{-})/B(B→K^{*}e^{+}e^{-}), for both charged and neutral B mesons. The ratio…”
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Test of lepton universality in beauty-quark decays
ISSN: 1745-2473, 1745-2481, 1745-2481Vydáno: London Nature Publishing Group UK 01.03.2022Vydáno v Nature physics (01.03.2022)“…The standard model of particle physics currently provides our best description of fundamental particles and their interactions. The theory predicts that the…”
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Physicists narrow down neutrino’s mysterious mass
ISSN: 0028-0836, 1476-4687, 1476-4687Vydáno: England 10.04.2025Vydáno v Nature (London) (10.04.2025)Získat plný text
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FLAG Review 2019
ISSN: 1434-6044, 1434-6052Vydáno: Heidelberg Springer Nature B.V 11.02.2020Vydáno v The European physical journal. C, Particles and fields (11.02.2020)“…We review lattice results related to pion, kaon, D-meson, B-meson, and nucleon physics with the aim of making them easily accessible to the nuclear and…”
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Observation of CP Violation in Charm Decays
ISSN: 0031-9007, 1079-7114, 1079-7114Vydáno: United States American Physical Society 31.05.2019Vydáno v Physical review letters (31.05.2019)“…A search for charge-parity (CP) violation in D^{0}→K^{-}K^{+} and D^{0}→π^{-}π^{+} decays is reported, using pp collision data corresponding to an integrated…”
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High-precision measurement of the W boson mass with the CDF II detector
ISSN: 1095-9203, 1095-9203Vydáno: United States 08.04.2022Vydáno v Science (American Association for the Advancement of Science) (08.04.2022)“…The mass of the boson, a mediator of the weak force between elementary particles, is tightly constrained by the symmetries of the standard model of particle…”
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Observation of an exotic narrow doubly charmed tetraquark
ISSN: 1745-2473, 1745-2481, 1745-2481Vydáno: London Nature Publishing Group UK 01.07.2022Vydáno v Nature physics (01.07.2022)“…Conventional, hadronic matter consists of baryons and mesons made of three quarks and a quark–antiquark pair, respectively 1 , 2 . Here, we report the…”
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Direct observation of the dead-cone effect in quantum chromodynamics
ISSN: 0028-0836, 1476-4687, 1476-4687Vydáno: London Nature Publishing Group UK 19.05.2022Vydáno v Nature (London) (19.05.2022)“…In particle collider experiments, elementary particle interactions with large momentum transfer produce quarks and gluons (known as partons) whose evolution is…”
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A detailed map of Higgs boson interactions by the ATLAS experiment ten years after the discovery
ISSN: 0028-0836, 1476-4687, 1476-4687Vydáno: London Nature Publishing Group UK 07.07.2022Vydáno v Nature (London) (07.07.2022)“…The standard model of particle physics 1 – 4 describes the known fundamental particles and forces that make up our Universe, with the exception of gravity. One…”
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Measurement of the Ratio of the B0→D−τ+ντ and B0→D−μ+νμ Branching Fractions Using Three-Prong τ-Lepton Decays
ISSN: 0031-9007Vydáno: American Physical Society 25.04.2018Vydáno v Physical review letters (25.04.2018)“…The ratio of branching fractions R ( D * − ) ≡ B ( B 0 → D * − τ + ν τ ) / B ( B 0 → D * − μ + ν μ ) is measured using a data sample of proton-proton…”
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Nucleon axial, tensor, and scalar charges and σ -terms in lattice QCD
ISSN: 2470-0010, 2470-0029Vydáno: College Park American Physical Society 29.09.2020Vydáno v Physical review. D (29.09.2020)“…We determine the nucleon axial, scalar and tensor charges within lattice quantum chromodynamics including all contributions from valence and sea quarks. We…”
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Inclusive semileptonic decays from lattice QCD: Analysis of systematic effects
ISSN: 2470-0010, 2470-0029Vydáno: 01.07.2025Vydáno v Physical review. D (01.07.2025)“…Lattice QCD calculations of inclusive semileptonic decay rates involve new types of systematic effects, such as truncation errors in the estimation of energy…”
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Direct neutrino-mass measurement based on 259 days of KATRIN data
ISSN: 1095-9203, 1095-9203Vydáno: United States 11.04.2025Vydáno v Science (American Association for the Advancement of Science) (11.04.2025)“…That neutrinos carry a nonvanishing rest mass is evidence of physics beyond the Standard Model of elementary particles. Their absolute mass holds relevance in…”
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Measurement of R ( D ) and R ( D ) with a Semileptonic Tagging Method
ISSN: 0031-9007, 1079-7114, 1079-7114Vydáno: United States American Physical Society 24.04.2020Vydáno v Physical review letters (24.04.2020)“…The experimental results on the ratios of branching fractions R(D)=B(B[over ¯]→Dτ^{-}ν[over ¯]_{τ})/B(B[over ¯]→Dℓ^{-}ν[over ¯]_{ℓ}) and R(D^{*})=B(B[over…”
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Hints of lepton flavor universality violations
ISSN: 1095-9203, 1095-9203Vydáno: United States 26.11.2021Vydáno v Science (American Association for the Advancement of Science) (26.11.2021)“…Mounting evidence shows where the standard model may be incomplete…”
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Constraint on the matter–antimatter symmetry-violating phase in neutrino oscillations
ISSN: 0028-0836, 1476-4687, 1476-4687Vydáno: London Nature Publishing Group UK 16.04.2020Vydáno v Nature (London) (16.04.2020)“…The charge-conjugation and parity-reversal (CP) symmetry of fundamental particles is a symmetry between matter and antimatter. Violation of this CP symmetry…”
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Measurement of the Ratio of Branching Fractions B ( B ¯ 0 → D + τ − ν ¯ τ ) / B ( B ¯ 0 → D + μ − ν ¯ μ )
ISSN: 0031-9007, 1079-7114Vydáno: United States American Physical Society 11.09.2015Vydáno v Physical review letters (11.09.2015)“…The branching fraction ratio R(D^{*})≡B(B[over ¯]^{0}→D^{*+}τ^{-}ν[over ¯]_{τ})/B(B[over ¯]^{0}→D^{*+}μ^{-}ν[over ¯]_{μ}) is measured using a sample of…”
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Direct constraint on the Higgs–charm coupling from a search for Higgs boson decays into charm quarks with the ATLAS detector
ISSN: 1434-6044, 1434-6052, 1431-5858, 1434-6052Vydáno: Berlin/Heidelberg Springer Berlin Heidelberg 2022Vydáno v European Physical Journal C (2022)“…A search for the Higgs boson decaying into a pair of charm quarks is presented. The analysis uses proton–proton collisions to target the production of a Higgs…”
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Search for resonant and nonresonant new phenomena in high-mass dilepton final states at s = 13 TeV
ISSN: 1029-8479Vydáno: Berlin/Heidelberg Springer Berlin Heidelberg 27.07.2021Vydáno v The journal of high energy physics (27.07.2021)“…A bstract A search is presented for physics beyond the standard model (SM) using electron or muon pairs with high invariant mass. A data set of proton-proton…”
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