M. Xu

First energy scan measurement of $e^{+}e^{-}\to K^{+}K^{-}$ around the $ψ(2S)$ resonance

BESIII Collaboration, M. Ablikim, M. N. Achasov, P. Adlarson et autres

We report the precise energy scan measurement of the cross section lineshape of $ψ(2S)\to K^{+}K^{-}$. The analysis is based on $e^{+}e^{-}$ collision data corresponding to an integrated luminosity of 495~pb$^{-1}$ collected with the BESIII detector at BEPCII. By analyzing the cross section …

First energy scan measurement of $e^{+}e^{-}\to K^{+}K^{-}$ around the $ψ(2S)$ resonance

BESIII Collaboration, M. Ablikim, M. N. Achasov, P. Adlarson et autres

We report the precise energy scan measurement of the cross section lineshape of $ψ(2S)\to K^{+}K^{-}$. The analysis is based on $e^{+}e^{-}$ collision data corresponding to an integrated luminosity of 495~pb$^{-1}$ collected with the BESIII detector at BEPCII. By analyzing the cross section …

Measurement of CP asymmetries in $\kern 0.18em\overline{\kern -0.18em B}^0 \to D_s^- D^+$ and $\kern 0.18em\overline{\kern -0.18em B}_s^0 \to D_s^+ D^-$ decays

LHCb Collaboration, R. Aaij, A. S. W. Abdelmotteleb, C. Abellan Beteta et autres

Measurements of the combined CP asymmetries in $\kern 0.18em\overline{\kern -0.18em B}^0 \to D_s^- D^+$ and $\kern 0.18em\overline{\kern -0.18em B}_s^0 \to D_s^+ D^-$ decays are made using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9fb$^{-1}$. The …

Observation of $Λ^+_c\to nπ^+η$ and search for $Λ^+_c\to na_0(980)^+$

BESIII Collaboration, M. Ablikim, M. N. Achasov, P. Adlarson et autres

By analysing 6.1 ${\rm fb}^{-1}$ of data collected at center-of-mass energies between $\sqrt{s}=4.600$ and 4.843 $\rm GeV$ with the BESIII detector at the BEPCII collider, we observe the decay $Λ_c^+\to nπ^+η$ for the first time with a statistical significance of $9.5σ$. The …

Observation of the doubly charmed baryon $\itΞ_{cc}^+$ with the LHCb Run 3 detector

LHCb Collaboration, R. Aaij, M. Abdelfatah, A. S. W. Abdelmotteleb et autres

The first observation of the doubly charmed baryon $\itΞ_{cc}^+$ is reported through its decay to the $\itΛ_c^+ K^-π^+$ final state, with a statistical significance exceeding seven standard deviations. The observation is made using proton-proton collision data collected in 2024 with the LHCb …

Measurement of CP asymmetries in $\kern 0.18em\overline{\kern -0.18em B}^0 \to D_s^- D^+$ and $\kern 0.18em\overline{\kern -0.18em B}_s^0 \to D_s^+ D^-$ decays

LHCb Collaboration, R. Aaij, A. S. W. Abdelmotteleb, C. Abellan Beteta et autres

Measurements of the combined CP asymmetries in $\kern 0.18em\overline{\kern -0.18em B}^0 \to D_s^- D^+$ and $\kern 0.18em\overline{\kern -0.18em B}_s^0 \to D_s^+ D^-$ decays are made using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9fb$^{-1}$. The …

au (code pays fourni par la source)

Measurement of the W → μν cross-sections as a function of the muon transverse momentum in pp collisions at 5.02 TeV

R. Aaij, A.S.W. Abdelmotteleb, C. Abellan Beteta, F. Abudinén et autres

The pp → W±(→ μ±νμ)X cross-sections are measured at a proton-proton centre-of-mass energy s=5.02$$ \sqrt{s}=5.02 $$ TeV using a dataset corresponding to an integrated luminosity of 100 pb−1 recorded by the LHCb experiment. Considering muons in the pseudorapidity range 2.2 < η …

Measurements of charmed meson and antimeson production asymmetries at $ \sqrt{\textrm{s}}=13.6 $ TeV

LHCb Collaboration, R. Aaij, A. S. W. Abdelmotteleb, C. Abellan Beteta et autres

de (code pays fourni par la source)

Measurement of CP violation in B$^{0}$→ D$^{+}$D$^{−}$ and $ {\textrm{B}}_{\textrm{s}}^0 $→$ {\textrm{D}}_{\textrm{s}}^{+}{\textrm{D}}_{\textrm{s}}^{-} $ decays

The LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb, C. Abellan Beteta et autres

de (code pays fourni par la source)

First measurement of the $C\!P$-violating phase in ${{B} ^0_{s}} \!\rightarrow {{J /\psi }} (\rightarrow e ^+e ^-$)$\phi $ decays

LHCb Collaboration, R. Aaij, S. Akar, T. J. V. Bowcock et autres