M. Alexander

Research interests

Publications

• Observation of an exotic narrow doubly charmed tetraquark

  Nature Physics · 2022 · https://doi.org/10.1038/s41567-022-01614-y

• Test of lepton universality in beauty-quark decays

  Nature Physics · 2022 · https://doi.org/10.1038/s41567-021-01478-8

• Study of the doubly charmed tetraquark $${{{{{{\rm{T}}}}}}}_{{{{{{\rm{c}}}}}}{{{{{\rm{c}}}}}}}^{+}$$

  Nature Communications · 2022 · https://doi.org/10.1038/s41467-022-30206-w

• Measurement of CP -Averaged Observables in the B0→K*0μ+μ− Decay

  Physical Review Letters · 2020 · https://doi.org/10.1103/physrevlett.125.011802

• Search for A ′ → μ + μ − Decays

  Physical Review Letters · 2020 · https://doi.org/10.1103/physrevlett.124.041801

• Observation of CP Violation in Charm Decays

  Physical Review Letters · 2019 · https://doi.org/10.1103/physrevlett.122.211803

• Search for Lepton-Universality Violation in B+→K+ℓ+ℓ− Decays

  Physical Review Letters · 2019 · https://doi.org/10.1103/physrevlett.122.191801

• Observation of a Narrow Pentaquark State, P c ( 4312 ) + , and of the Two-Peak Structure of the P c ( 4450 ) +

  Physical Review Letters · 2019 · https://doi.org/10.1103/physrevlett.122.222001

• Measurement of the Ratio of the B 0 → D * − τ + ν τ and B 0 → D * − μ + ν μ Branching Fractions Using Three-Prong τ -Lepton Decays

  Physical Review Letters · 2018 · https://doi.org/10.1103/physrevlett.120.171802

• Test of lepton flavor universality by the measurement of the B 0 → D * − τ + ν τ branching fraction using three-prong τ decays

  Physical review. D/Physical review. D. · 2018 · https://doi.org/10.1103/physrevd.97.072013

• Observation of Five New Narrow Ω c 0 States Decaying to Ξ c + K −

  Physical Review Letters · 2017 · https://doi.org/10.1103/physrevlett.118.182001

• Observation of the Doubly Charmed Baryon Ξ c c + +

  Physical Review Letters · 2017 · https://doi.org/10.1103/physrevlett.119.112001

• Angular analysis of the B 0 → K *0 μ + μ − decay using 3 fb−1 of integrated luminosity

  Journal of High Energy Physics · 2016 · https://doi.org/10.1007/jhep02(2016)104

• Measurement of the Ratio of Branching Fractions B ( B ¯ 0 → D * + τ − ν ¯ τ ) / B ( B ¯ 0 → D * + μ − ν ¯ μ )

  Physical Review Letters · 2015 · https://doi.org/10.1103/physrevlett.115.111803

• Observation of J / ψ p Resonances Consistent with Pentaquark States in Λ b 0 → J / ψ K − p Decays

  Physical Review Letters · 2015 · https://doi.org/10.1103/physrevlett.115.072001

• Angular analysis and differential branching fraction of the decay B s 0 → ϕμ + μ −

  Journal of High Energy Physics · 2015 · https://doi.org/10.1007/jhep09(2015)179

• Performance of the LHCb Vertex Locator

  Journal of Instrumentation · 2014 · 10.1088/1748-0221/9/09/p09007

• Differential branching fractions and isospin asymmetries of B → K (*) μ + μ − decays

  Journal of High Energy Physics · 2014 · https://doi.org/10.1007/jhep06(2014)133

• Observation of the Resonant Character of the Z(4430)− State

  Physical Review Letters · 2014 · https://doi.org/10.1103/physrevlett.112.222002

• Test of Lepton Universality Using B + → K + ℓ + ℓ − Decays

  Physical Review Letters · 2014 · https://doi.org/10.1103/physrevlett.113.151601

• First Evidence for the Decay Bs0→μ+μ−

  Physical Review Letters · 2013 · https://doi.org/10.1103/physrevlett.110.021801

• Measurement of Form-Factor-Independent Observables in the Decay B0→K*0μ+μ−

  Physical Review Letters · 2013 · https://doi.org/10.1103/physrevlett.111.191801

• Measurement of the Bs0→μ+μ− Branching Fraction and Search for B0→μ+μ− Decays at the LHCb Experiment

  Physical Review Letters · 2013 · https://doi.org/10.1103/physrevlett.111.101805

• Implications of LHCb measurements and future prospects

  The European Physical Journal C · 2013 · https://doi.org/10.1140/epjc/s10052-013-2373-2

• Determination of the X(3872) Meson Quantum Numbers

  Physical Review Letters · 2013 · https://doi.org/10.1103/physrevlett.110.222001

• Measurement of J/Ψ production in pp collisions at $\sqrt{s}=7$ TeV

  The European Physical Journal C · 2011 · https://doi.org/10.1140/epjc/s10052-011-1645-y

Current projects

No projects listed.