I. El Rifai

activity

20122016

J / ψ p

resonances consistent with pentaquark states in

Λ_{b}^{0} \to J / ψ K^{-} p

decays

1.3k citations · 10.8k across the 128 of their papers we have counts for

collaborators

Showing 2012Show all

12 papers · 1 filter

hep-ex2012★ 17 cited

Measurement of CP observables in B0 -> D K*0 with D -> K+ K-

LHCb collaboration, R. Aaij, C. Abellan Beteta +625

The decay B0 -> D K*0 and the charge conjugate mode are studied using 1.0fb-1 of pp collision data collected by the LHCb experiment at sqrt(s) = 7TeV in 2011. The CP asymmetry betw…

hep-ex2012★ 26 cited

Measurement of the forward energy flow in pp collisions at sqrt(s)=7 TeV

LHCb collaboration, R. Aaij, C. Abellan Beteta +628

The energy flow created in pp collisions at sqrt(s)=7 TeV is studied within the pseudorapidity range 1.9<eta<4.9 with data collected by the LHCb experiment. The measurements are pe…

hep-ex2012★ 391 cited

First evidence for the decay Bs -> mu+ mu-

LHCb collaboration, R. Aaij, C. Abellan Beteta +617

A search for the rare decays Bs->mu+mu- and B0->mu+mu- is performed using data collected in 2011 and 2012 with the LHCb experiment at the Large Hadron Collider. The data samples co…

hep-ex2012★ 62 cited

First observation of the decay $B_{s 2}^{} (5840)^{0} \to B^{+} K^{-}$ and studies of excited $B_{s}$ mesons

LHCb collaboration, R. Aaij, C. Abellan Beteta +621

Properties of the orbitally excited (L=1) $B_{s}$ states are studied using 1.0 fb $^{- 1}$ of pp collisions at $s = 7$ TeV collected with the LHCb detector. The first observation…

hep-ex2012★ 91 cited

Observation of D0-D0bar oscillations

LHCb collaboration, R. Aaij, C. Abellan Beteta +616

We report a measurement of the time-dependent ratio of D0->K+pi- to D0->K-pi+ decay rates in D*+-tagged events using 1.0 fb^{-1} of integrated luminosity recorded by the LHCb exper…

hep-ex2012★ 44 cited

Evidence for the decay $B^{0} \to J / ψ ω$ and measurement of the relative branching fractions of $B_{s}^{0}$ meson decays to $J / ψ η$ and $J / ψ η^{^{'}}$

LHCb Collaboration, R. Aaij, C. Abellan Beteta +620

First evidence of the $B^{0} \to J / ψ ω$ decay is found and the $B_{s}^{0} \to J / ψ η$ and $B_{s}^{0} \to J / ψ η^{'}$ decays are studied using a dataset corresponding to an integrated lumino…

hep-ex2012★ 46 cited

First observation of the decay $B^{+} \to π^{+} μ^{+} μ^{-}$

LHCb Collaboration, R. Aaij, C. Abellan Beteta +621

A discovery of the rare decay $B^{+} \to π^{+} μ^{+} μ^{-}$ is presented. This decay is observed for the first time, with 5.2 $σ$ significance. The observation is made usin…

hep-ex2012★ 93 cited

Measurements of $B_{c}^{+}$ production and mass with the $B_{c}^{+} \to J / ψ π^{+}$ decay

LHCb collaboration, R. Aaij, C. Abellan Beteta +617

Measurements of $B_{c}^{+}$ production and mass are performed with the decay mode $B_{c}^{+} \to J / ψ π^{+}$ using 0.37 fb $^{- 1}$ of data collected in $pp$ collisions at $s = 7$ TeV by th…

hep-ex2012★ 31 cited

Study of $D_{s J}$ decays to $D^+\KS$ and $D^{0} K^{+}$ final states in $pp$ collisions

LHCb collaboration, R. Aaij, C. Abellan Beteta +616

A study of $D^+\KS$ and $D^{0} K^{+}$ final states is performed in a sample of 1.0/fb of $pp$ collision data collected at a centre-of-mass energy of $s = 7$ TeV with the \lhcb dete…

hep-ex2012★ 21 cited

Measurement of the effective $B_{s}^{0} \to K^{+} K^{-}$ lifetime

LHCb collaboration, R. Aaij, C. Abellan Beteta +616

A precise determination of the effective $B_{s}^{0} \to K^{+} K^{-}$ lifetime can be used to constrain contributions from physics beyond the Standard Model in the $B_{s}^{0}$ meson sys…

hep-ex2012★ 41 cited

Measurement of prompt hadron production ratios in $pp$ collisions at $s =$ 0.9 and 7 TeV

LHCb collaboration, R. Aaij, C. Abellan Beteta +619

The charged-particle production ratios $p ˉ / p$ , $K^{-} / K^{+}$ , $π^{-} / π^{+}$ , $(p + p ˉ) / (π^{+} + π^{-})$ , $(K^{+} + K^{-}) / (π^{+} + π^{-})$ and $(p + p ˉ) / (K^{+} + K^{-})$ are measured with t…

hep-ex2012★ 44 cited

Measurement of the CP-violating phase ϕs in Bs->J/ψπ+π- decays

LHCb collaboration, R. Aaij, C. Abellan Beteta +592

Measurement of the mixing-induced CP-violating phase phi_s in Bs decays is of prime importance in probing new physics. Here 7421 +/- 105 signal events from the dominantly CP-odd fi…

Measurement of CP observables in B0 -> D K*0 with D -> K+ K-

Measurement of the forward energy flow in pp collisions at sqrt(s)=7 TeV

First evidence for the decay Bs -> mu+ mu-

First observation of the decay Bs2∗​(5840)0→B∗+K− and studies of excited Bs​ mesons

Observation of D0-D0bar oscillations

Evidence for the decay B0→J/ψω and measurement of the relative branching fractions of Bs0​ meson decays to J/ψη and J/ψη′

First observation of the decay B+→π+μ+μ−

Measurements of Bc+​ production and mass with the Bc+​→J/ψπ+ decay

Study of DsJ​ decays to $D^+\KS$ and D0K+ final states in pp collisions

Measurement of the effective Bs0​→K+K− lifetime

Measurement of prompt hadron production ratios in pp collisions at s​= 0.9 and 7 TeV

Measurement of the CP-violating phase ϕs in Bs->J/ψπ+π- decays

First observation of the decay $B_{s 2}^{} (5840)^{0} \to B^{+} K^{-}$ and studies of excited $B_{s}$ mesons

Evidence for the decay $B^{0} \to J / ψ ω$ and measurement of the relative branching fractions of $B_{s}^{0}$ meson decays to $J / ψ η$ and $J / ψ η^{^{'}}$

First observation of the decay $B^{+} \to π^{+} μ^{+} μ^{-}$

Measurements of $B_{c}^{+}$ production and mass with the $B_{c}^{+} \to J / ψ π^{+}$ decay

Study of $D_{s J}$ decays to $D^+\KS$ and $D^{0} K^{+}$ final states in $pp$ collisions

Measurement of the effective $B_{s}^{0} \to K^{+} K^{-}$ lifetime

Measurement of prompt hadron production ratios in $pp$ collisions at $s =$ 0.9 and 7 TeV