Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering

output

19972026

J / ψ p

resonances consistent with pentaquark states in

Λ_{b}^{0} \to J / ψ K^{-} p

decays

1.3k citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing 2011 · hep-exShow all

24 papers · 2 filters

hep-ex2011★ 42 cited

Measurement of mixing and CP violation parameters in two-body charm decays

LHCb Collaboration, R. Aaij, C. Abellan Beteta +585

A study of mixing and indirect CP violation in D0 mesons through the determination of the parameters y_CP and A_Γ is presented. The parameter y_CP is the deviation from unity of th…

hep-ex2011★ 53 cited

Measurement of charged particle multiplicities in $pp$ collisions at $s = 7$ TeV in the forward region

LHCb Collaboration, R. Aaij, C. Abellan Beteta +589

The charged particle production in proton-proton collisions is studied with the LHCb detector at a centre-of-mass energy of $s = 7$ TeV in different intervals of pseudorapid…

hep-ex2011★ 179 cited

Observation of X(3872) production in pp collisions at sqrt(s)= 7 TeV

LHCb Collaboration, R. Aaij, C. Abellan Beteta +585

Using 34.7 pb-1 of data collected with the LHCb detector, the inclusive production of the X(3872) meson in pp collisions at sqrt(s) = 7 TeV is observed for the first time. Candidat…

hep-ex2011★ 20 cited

Observation of Bs -> J/ψf'2(1525) in J/ψK+K- final states

LHCb Collaboration, R. Aaij, C. Abellan Beteta +583

The decay Bs -> J/ψK+ K- is investigated using 0.16/fb of data collected with the LHCb detector using 7 TeV pp collisions. Although the J/ψϕ channel is well known, final states at…

hep-ex2011★ 68 cited

Measurement of the B^0_s - \bar{B}^0_s oscillation frequency Delta m_s in B^0_s -> D_s^-(3) pi decays

LHCb Collaboration, R. Aaij, C. Abellan Beteta +579

The B^0_s-\bar{B}^0_s oscillation frequency Delta m_s is measured with 36 pb^{-1} of data collected in pp collisions at \sqrt{s} = 7 TeV by the LHCb experiment at the Large Hadron…

hep-ex2011★ 90 cited

Differential branching fraction and angular analysis of the decay $B^{0} \to K^{* 0} μ^{+} μ^{-}$

LHCb Collaboration, R. Aaij, C. Abellan Beteta +585

The angular distributions and the partial branching fraction of the decay $B^{0} \to K^{* 0} μ^{+} μ^{-}$ are studied using an integrated luminosity of $0.37 f b^{- 1}$ of data c…

hep-ex2011★ 133 cited

Measurement of the CP-violating phase phi_s in the decay Bs->J/psi phi

LHCb Collaboration, R. Aaij, C. Abellan Beteta +585

We present a measurement of the time-dependent CP-violating asymmetry in B_s -> J/psi phi decays, using data collected with the LHCb detector at the LHC. The decay time distributio…

hep-ex2011★ 11 cited

Measurement of the Azimuthal Correlation between the most Forward Jet and the Scattered Positron in Deep-Inelastic Scattering at HERA

H1 Collaboration

Deep-inelastic positron-proton scattering events at low photon virtuality Q^2 with a forward jet, produced at small angles with respect to the proton beam, are measured with the H1…

hep-ex2011★ 23 cited

First observation of the decay $B ˉ_{s}^{0} \to D^{0} K^{* 0}$ and a measurement of the ratio of branching fractions $\frac{B ( B ˉ _{s}^{0} \to D ^{0} K ^{* 0} )}{B ( B ˉ ^{0} \to D ^{0} ρ ^{0} )}$

LHCb Collaboration, R. Aaij, C. Abellan Beteta +578

The first observation of the decay $B ˉ_{s}^{0} \to D^{0} K^{* 0}$ using $pp$ data collected by the LHCb detector at a centre-of-mass energy of 7 TeV, corresponding to an integrated l…

hep-ex2011★ 36 cited

Measurement of Dijet Production in Diffractive Deep-Inelastic Scattering with a Leading Proton at HERA

H1 Collaboration

The cross section of diffractive deep-inelastic scattering ep \rightarrow eXp is measured, where the system X contains at least two jets and the leading final state proton is detec…

hep-ex2011★ 212 cited

Measurement of b hadron production fractions in 7 TeV pp collisions

The LHCb Collaboration, R. Aaij, C. Abellan Beteta +587

Measurements of $b$ hadron production ratios in proton-proton collisions at a centre-of-mass energy of 7 TeV with an integrated luminosity of 3 pb $^{- 1}$ are presented. We study th…

hep-ex2011★ 33 cited

Search for CP violation in $D^{+} \to K^{-} K^{+} π^{+}$ decays

LHCb Collaboration, R. Aaij, B. Adeva +573

A model-independent search for direct CP violation in the Cabibbo suppressed decay $D^{+} \to K^{-} K^{+} π^{+}$ in a sample of approximately 370,000 decays is carried out. The data were co…

hep-ex2011★ 52 cited

Determination of $π π$ scattering lengths from measurement of $π^{+} π^{-}$ atom lifetime

B. Adeva, L. Afanasyev, M. Benayoun +92

The DIRAC experiment at CERN has achieved a sizeable production of $π^{+} π^{-}$ atoms and has significantly improved the precision on its lifetime determination. From a sample of 21227…

hep-ex2011★ 50 cited

Search for the lepton number violating decays $B^{+} \to π^{-} μ^{+} μ^{+}$ and $B^{+} \to K^{-} μ^{+} μ^{+}$

The LHCb Collaboration, R. Aaij, C. Abellan Beteta +578

A search is performed for the lepton number violating decay $B^{+} \to h^{-} μ^{+} μ^{+}$ , where $h^{-}$ represents a $K^{-}$ or a $π^{-}$ , using data from the LHCb detector corresponding to an…

hep-ex2011★ 35 cited

Measurements of the Branching fractions for $B_{(} s) - > D_{(} s) π π π$ and $Λ_{b}^{0} - > Λ_{c}^{+} π π π$

LHCb Collaboration, R. Aaij, B. Adeva +566

Branching fractions of the decays $H_{b} \to H_{c} π^{-} π^{+} π^{-}$ relative to $H_{b} \to H_{c} π^{-}$ are presented, where $H_{b}$ ( $H_{c}$ ) represents B^0-bar( $D^{+}$ ), $B^{-}$ ( $D^{0}$ ), B_s^0-bar ( $D_{s}^{+}$ )…

hep-ex2011★ 16 cited

Measurement of the Diffractive Longitudinal Structure Function F_L^D at HERA

H1 Collaboration

First measurements are presented of the diffractive cross section $σ_{e p \to e X Y}$ at centre-of-mass energies $s$ of 225 and 252 GeV, together with a precise new mea…

hep-ex2011★ 22 cited

Search for Contact Interactions in e^{\pm}p Collisions at HERA

H1 Collaboration

A search for physics beyond the Standard Model in neutral current deep inelastic scattering at high negative four-momentum transfer squared Q^2 is performed in e^{\pm}p collisions…

hep-ex2011★ 28 cited

Measurement of $V^{0}$ production ratios in $pp$ collisions at $s = 0.9$ and 7\,TeV

LHCb Collaboration, R. Aaij, B. Adeva +547

The $Λ ˉ /Λ$ and $Λ ˉ / K_{S}^{0}$ production ratios are measured by the LHCb detector from $0.3 nb^{- 1}$ of $pp$ collisions delivered by the LHC at $\sqrt{s} =…

hep-ex2011★ 42 cited

Search for First Generation Leptoquarks in ep Collisions at HERA

H1 Collaboration

A search for first generation scalar and vector leptoquarks produced in ep collisions is performed by the H1 experiment at HERA. The full H1 data sample is used in the analysis, co…

hep-ex2011★ 9 cited

Measurement of Photon Production in the Very Forward Direction in Deep-Inelastic Scattering at HERA

H1 Collaboration

The production of photons at very small angles with respect to the proton beam direction is studied in deep-inelastic positron-proton scattering at HERA. The data are taken with th…

hep-ex2011★ 45 cited

Determination of f_s/f_d for 7 TeV pp collisions and a measurement of the branching fraction of the decay Bd->D-K+

LHCb Collaboration, R. Aaij, B. Adeva +548

The relative abundance of the three decay modes $B_{d} \to D^{-} K^{+}$ , $B_{d} \to D^{-} π^{+}$ and $B_{s} \to D_{s}^{-} π^{+}$ produced in 7 TeV $pp$ collisions at the LHC is determined from data co…

hep-ex2011★ 54 cited

Measurement of D^{*\pm} Meson Production and Determination of F_2^{ccbar} at low Q2 in Deep-Inelastic Scattering at HERA

H1 Collaboration

Inclusive production of D* mesons in deep-inelastic ep scattering at HERA is studied in the range 5 < Q^2 <100 GeV^2 of the photon virtuality and 0.02 < y < 0.7 of the inelasticity…

hep-ex2011★ 17 cited

Search for Lepton Flavour Violation at HERA

H1 Collaboration

A search for second and third generation scalar and vector leptoquarks produced in ep collisions via the lepton flavour violating processes ep -> mu X and ep -> tau X is performed…

hep-ex2011★ 343 cited

Measurement of J/psi production in pp collisions at sqrt(s)=7 TeV

LHCb Collaboration, R. Aaij, B. Adeva +543

The production of J/psi mesons in proton-proton collisions at sqrt(s)=7 TeV is studied with the LHCb detector at the LHC. The differential cross-section for prompt J/psi production…

Measurement of mixing and CP violation parameters in two-body charm decays

Measurement of charged particle multiplicities in pp collisions at s​=7TeV in the forward region

Observation of X(3872) production in pp collisions at sqrt(s)= 7 TeV

Observation of Bs -> J/ψf'2(1525) in J/ψK+K- final states

Measurement of the B^0_s - \bar{B}^0_s oscillation frequency Delta m_s in B^0_s -> D_s^-(3) pi decays

Differential branching fraction and angular analysis of the decay B0→K∗0μ+μ−

Measurement of the CP-violating phase phi_s in the decay Bs->J/psi phi

Measurement of the Azimuthal Correlation between the most Forward Jet and the Scattered Positron in Deep-Inelastic Scattering at HERA

First observation of the decay Bˉs0​→D0K∗0 and a measurement of the ratio of branching fractions B(Bˉ0→D0ρ0)B(Bˉs0​→D0K∗0)​

Measurement of Dijet Production in Diffractive Deep-Inelastic Scattering with a Leading Proton at HERA

Measurement of b hadron production fractions in 7 TeV pp collisions

Search for CP violation in D+→K−K+π+ decays

Determination of ππ scattering lengths from measurement of π+π− atom lifetime

Search for the lepton number violating decays B+→π−μ+μ+ and B+→K−μ+μ+

Measurements of the Branching fractions for B(​s)−>D(​s)πππ and Λb0​−>Λc+​πππ

Measurement of the Diffractive Longitudinal Structure Function F_L^D at HERA

Search for Contact Interactions in e^{\pm}p Collisions at HERA

Measurement of V0 production ratios in pp collisions at s​=0.9 and 7\,TeV

Search for First Generation Leptoquarks in ep Collisions at HERA

Measurement of Photon Production in the Very Forward Direction in Deep-Inelastic Scattering at HERA

Determination of f_s/f_d for 7 TeV pp collisions and a measurement of the branching fraction of the decay Bd->D-K+

Measurement of D^{*\pm} Meson Production and Determination of F_2^{ccbar} at low Q2 in Deep-Inelastic Scattering at HERA

Search for Lepton Flavour Violation at HERA

Measurement of J/psi production in pp collisions at sqrt(s)=7 TeV

Measurement of charged particle multiplicities in $pp$ collisions at $s = 7$ TeV in the forward region

Differential branching fraction and angular analysis of the decay $B^{0} \to K^{* 0} μ^{+} μ^{-}$

First observation of the decay $B ˉ_{s}^{0} \to D^{0} K^{* 0}$ and a measurement of the ratio of branching fractions $\frac{B ( B ˉ _{s}^{0} \to D ^{0} K ^{* 0} )}{B ( B ˉ ^{0} \to D ^{0} ρ ^{0} )}$

Search for CP violation in $D^{+} \to K^{-} K^{+} π^{+}$ decays

Determination of $π π$ scattering lengths from measurement of $π^{+} π^{-}$ atom lifetime

Search for the lepton number violating decays $B^{+} \to π^{-} μ^{+} μ^{+}$ and $B^{+} \to K^{-} μ^{+} μ^{+}$

Measurements of the Branching fractions for $B_{(} s) - > D_{(} s) π π π$ and $Λ_{b}^{0} - > Λ_{c}^{+} π π π$

Measurement of $V^{0}$ production ratios in $pp$ collisions at $s = 0.9$ and 7\,TeV