J. J. Back

activity

20012025

most citedObservation of a Broad Structure in the

π^{+} π^{-} J / ψ

Mass Spectrum around 4.26 GeV/

c^{2}

744 citations · 16.4k across the 327 of their papers we have counts for

collaborators

Showing 2021Show all

5 papers · 1 filter

hep-ex2021

Measurement of prompt charged-particle production in pp collisions at a centre-of-mass energy of 13 TeV

LHCb collaboration, R. Aaij, C. Abellán Beteta +957

The differential cross-section of prompt inclusive production of long-lived charged particles in proton-proton collisions is measured using a data sample recorded by the LHCb exper…

hep-ex2021★ 29 cited

Search for time-dependent $C P$ violation in $D^{0} \to K^{+} K^{-}$ and $D^{0} \to π^{+} π^{-}$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +953

A search for time-dependent violation of the charge-parity symmetry in $D^{0} \to K^{+} K^{-}$ and $D^{0} \to π^{+} π^{-}$ decays is performed at the LHCb experiment using proton-proton collis…

hep-ex2021★ 8 cited

Measurement of the prompt-production cross-section ratio $σ (χ_{c 2}) / σ (χ_{c 1})$ in $p$ Pb collisions at $s_{N N}$ = 8.16 TeV

R. Aaij, C. Abellán Beteta, T. Ackernley +954

This Letter reports the first measurement of prompt $χ_{c 1}$ and $χ_{c 2}$ charmonium production in nuclear collisions at Large Hadron Collider energies. The cross-section ratio $σ(…

hep-ex2021★ 76 cited

Precise measurement of the $f_{s} / f_{d}$ ratio of fragmentation fractions and of $B_{s}^{0}$ decay branching fractions

LHCb collaboration, R. Aaij, C. Abellán Beteta +955

The ratio of the $B_{s}^{0}$ and $B^{0}$ fragmentation fractions, $f_{s} / f_{d}$ , in proton-proton collisions at the LHC, is obtained as a function of $B$ -meson transverse momentum and collis…

hep-ex2021★ 200 cited

Observation of new resonances decaying to $J / ψ K^{+}$ and $J / ψ ϕ$

LHCb collaboration, R. Aaij, C. Abellán Beteta +953

The first observation of exotic states with a new quark content $c c ˉ u s ˉ$ decaying to the $J / ψ K^{+}$ final state is reported with high significance from an amplitude anal…

Measurement of prompt charged-particle production in pp collisions at a centre-of-mass energy of 13 TeV

Search for time-dependent CP violation in D0→K+K− and D0→π+π− decays

Measurement of the prompt-production cross-section ratio σ(χc2​)/σ(χc1​) in pPb collisions at sNN​​ = 8.16 TeV

Precise measurement of the fs​/fd​ ratio of fragmentation fractions and of Bs0​ decay branching fractions

Observation of new resonances decaying to J/ψK+ and J/ψϕ

Search for time-dependent $C P$ violation in $D^{0} \to K^{+} K^{-}$ and $D^{0} \to π^{+} π^{-}$ decays

Measurement of the prompt-production cross-section ratio $σ (χ_{c 2}) / σ (χ_{c 1})$ in $p$ Pb collisions at $s_{N N}$ = 8.16 TeV

Precise measurement of the $f_{s} / f_{d}$ ratio of fragmentation fractions and of $B_{s}^{0}$ decay branching fractions

Observation of new resonances decaying to $J / ψ K^{+}$ and $J / ψ ϕ$