# Search for heavy neutral leptons in $W^+\to\mu^{+}\mu^{\pm}\text{jet}$ decays. (arXiv:2011.05263v1 [hep-ex])

A search is performed for heavy neutrinos in the decay of a $W$ boson into two muons and a jet. The data set corresponds to an integrated luminosity of approximately

# Observation of structure in the $J/\psi$-pair mass spectrum. (arXiv:2006.16957v2 [hep-ex] UPDATED)

Using proton-proton collision data at centre-of-mass energies of $\sqrt{s} = 7$, $8$ and $13\mathrm{\,TeV}$ recorded by the LHCb experiment at the Large Hadron Collider, corresponding to an integrated luminosity of

# Study of $B^0_s \rightarrow J/\psi\pi^+\pi^-K^+K^-$ decays. (arXiv:2011.01867v1 [hep-ex])

The decays $B^0_s \rightarrow J/\psi \pi^+\pi^- K^+ K^-$ are studied using a data set corresponding to an integrated luminosity of 9fb$^{-1}$, collected with the LHCb detector in proton-proton collisions at

# Searches for low-mass dimuon resonances. (arXiv:2007.03923v2 [hep-ex] UPDATED)

Searches are performed for a low-mass dimuon resonance, $X$, produced in proton-proton collisions at a center-of-mass energy of 13 TeV, using a data sample corresponding to an integrated luminosity of

# Searches for 25 rare and forbidden decays of $D^+$ and $D_s^+$ mesons. (arXiv:2011.00217v1 [hep-ex])

A search is performed for rare and forbidden charm decays of the form $D_{(s)}^+ \to h^\pm \ell^+ \ell^{(\prime)\mp}$, where $h^\pm$ is a pion or kaon and $\ell^{(‘)\pm}$ is an electron

# Search for $CP$ violation in $\Xi_c^+\rightarrow pK^-\pi^+$ decays using model-independent techniques. (arXiv:2006.03145v3 [hep-ex] UPDATED)

A first search for $CP$ violation in the Cabibbo-suppressed $\Xi_c^+\rightarrow pK^-\pi^+$ decay is performed using both a binned and an unbinned model-independent technique in the Dalitz plot. The studies are

# Observation of new excited $B_s^0$ states. (arXiv:2010.15931v1 [hep-ex])

A structure is observed in the $B^+K^-$ mass spectrum in a sample of proton–proton collisions at centre-of-mass energies of 7, 8, and 13 TeV, collected with the LHCb detector and

# Search for a doubly-charged $DDK$ bound state in $\Upsilon(1S,2S)$ inclusive decays and via direct production in $e^+e^-$ collisions at $\sqrt{s}$ = 10.520, 10.580, and 10.867 GeV. (arXiv:2008.13341v2 [hep-ex] UPDATED)

We report the results of a first search for a doubly-charged $DDK$ bound state, denoted the $R^{++}$, in $\Upsilon(1S)$ and $\Upsilon(2S)$ inclusive decays and via direct production in $e^+e^-$ collisions

# Observation of a new $\Xi_b^0$ state. (arXiv:2010.14485v1 [hep-ex])
Using a proton-proton collision data sample collected by the LHCb experiment, corresponding to an integrated luminosity of 8.5~fb$^{-1}$, the observation of a new excited $\Xi_b^0$ resonance decaying to the $\Xi_b^-\pi^+$
# Measurement of the branching fraction of the $B^{0}\rightarrow D_{s}^{+}\pi^{-}$ decay. (arXiv:2010.11986v1 [hep-ex])
A branching fraction measurement of the $B^{0}\rightarrow D_{s}^{+}\pi^{-}$ decay is presented using proton-proton collision data collected with the LHCb experiment, corresponding to an integrated luminosity of $5.0\,$fb$^{-1}$. The branching fraction