M. Whitehead

activity

20132023

J / ψ p

resonances consistent with pentaquark states in

Λ_{b}^{0} \to J / ψ K^{-} p

decays

1.3k citations · 4.5k across the 43 of their papers we have counts for

collaborators

Showing 2015 · hep-exShow all

19 papers · 2 filters

hep-ex2015★ 58 cited

Production of associated $Υ$ and open charm hadrons in $pp$ collisions at $s = 7$ and $8$ TeV via double parton scattering

LHCb collaboration, R. Aaij, C. Abellán Beteta +724

Associated production of bottomonia and open charm hadrons in $pp$ collisions at $s = 7$ and $8$ TeV is observed using data corresponding to an integrated luminosity of 3$fb^{-…

hep-ex2015★ 46 cited

A model-independent confirmation of the $Z (4430)^{-}$ state

LHCb collaboration, R. Aaij, B. Adeva +723

The decay $B^{0} \to ψ (2 S) K^{+} π^{-}$ is analyzed using $3 f b^{- 1}$ of $pp$ collision data collected with the LHCb detector. A model-independent description of the $ψ (2 S) π$ mass spe…

hep-ex2015★ 55 cited

Measurement of the forward-backward asymmetry in $Z / γ^{*} \to μ^{+} μ^{-}$ decays and determination of the effective weak mixing angle

LHCb collaboration, R. Aaij, B. Adeva +722

The forward-backward charge asymmetry for the process $q q ˉ \to Z / γ^{*} \to μ^{+} μ^{-}$ is measured as a function of the invariant mass of the dimuon system.…

hep-ex2015★ 49 cited

Forward production of $Υ$ mesons in $pp$ collisions at $s = 7$ and 8TeV

LHCb collaboration, R. Aaij, B. Adeva +720

The production of $Υ$ mesons in $pp$ collisions at $= 7$ and $8 TeV$ is studied with the LHCb detector using data samples corresponding to an integrated luminosity of…

hep-ex2015★ 1.3k cited

Observation of $J / ψ p$ resonances consistent with pentaquark states in $Λ_{b}^{0} \to J / ψ K^{-} p$ decays

LHCb collaboration, R. Aaij, B. Adeva +720

Observations of exotic structures in the $J / ψ p$ channel, that we refer to as pentaquark-charmonium states, in $Λ_{b}^{0} \to J / ψ K^{-} p$ decays are presented. The data sample corresponds…

hep-ex2015★ 25 cited

Measurement of the branching fraction ratio $B (B_{c}^{+} \to ψ (2 S) π^{+}) / B (B_{c}^{+} \to J / ψ π^{+})$

LHCb collaboration, R. Aaij, B. Adeva +721

Using $pp$ collision data collected by LHCb at center-of-mass energies $s$ = 7 TeV and 8 TeV, corresponding to an integrated luminosity of 3 fb $^{- 1}$ , the ratio of the bran…

hep-ex2015★ 635 cited

Measurement of the ratio of branching fractions $B (B^{0} \to D^{+} τ^{-} ν_{τ}) / B (B^{0} \to D^{+} μ^{-} ν_{μ})$

LHCb collaboration, R. Aaij, B. Adeva +722

The branching fraction ratio $R (D^{*}) \equiv B (B^{0} \to D^{*+} τ^{-} ν_{τ}) / B (B^{0} \to D^{*+} μ^{-} ν_{μ})$ is measured…

hep-ex2015★ 49 cited

First observation of top quark production in the forward region

LHCb collaboration, R. Aaij, B. Adeva +723

Top quark production in the forward region in proton-proton collisions is observed for the first time. The $W + b$ final state with $W \to μν$ is reconstructed using muons with a t…

hep-ex2015★ 117 cited

Search for the $Λ_{b} \to Λ η^{'}$ and $Λ_{b} \to Λ η$ decays with the LHCb detector

LHCb collaboration, R. Aaij, B. Adeva +716

A search is performed for the as yet unobserved baryonic $Λ_{b} \to Λ η^{'}$ and $Λ_{b} \to Λ η$ decays with 3 $f b^{- 1}$ of proton-proton collision data recorded by the…

hep-ex2015★ 119 cited

Dalitz plot analysis of $B^{0} \to D^{0} π^{+} π^{-}$ decays

LHCb collaboration, R. Aaij, B. Adeva +710

The resonant substructures of $B^{0} \to D^{0} π^{+} π^{-}$ decays are studied with the Dalitz plot technique. In this study a data sample corresponding to an integrated luminosi…

hep-ex2015★ 26 cited

A study of $C P$ violation in $B^{\mp} \to D h^{\mp}$ ( $h = K, π$ ) with the modes $D \to K^{\mp} π^{\pm} π^{0}$ , $D \to π^{+} π^{-} π^{0}$ and $D \to K^{+} K^{-} π^{0}$

LHCb collaboration, R. Aaij, B. Adeva +707

An analysis of the decays of $B^{\mp} \to D K^{\mp}$ and $B^{\mp} \to D π^{\mp}$ is presented in which the $D$ meson is reconstructed in the three-body final states $K^\mp…

hep-ex2015★ 178 cited

Determination of the quark coupling strength $∣ V_{u b} ∣$ using baryonic decays

LHCb collaboration, R. Aaij, B. Adeva +707

In the Standard Model of particle physics, the strength of the couplings of the $b$ quark to the $u$ and $c$ quarks, $∣ V_{u b} ∣$ and $∣ V_{c b} ∣$ , are governed by the coupling of the…

hep-ex2015★ 17 cited

First observation and measurement of the branching fraction for the decay $B_{s}^{0} \to D_{s}^{*\mp} K^{\pm}$

LHCb Collaboration, R. Aaij, B. Adeva +697

The first observation of the $B_{s}^{0} \to D_{s}^{*\mp} K^{\pm}$ decay is reported using 3.0 $f b^{- 1}$ of proton-proton collision data collected by the LHCb experiment. The $D_{s}^{*\mp}$ …

hep-ex2015★ 25 cited

Observation of the $B^{0} \to ρ^{0} ρ^{0}$ decay from an amplitude analysis of $B^{0} \to (π^{+} π^{-}) (π^{+} π^{-})$ decays

LHCb collaboration, R. Aaij, B. Adeva +699

Proton-proton collision data recorded in 2011 and 2012 by the \lhcb experiment, co\-rres\-pon\-ding to an integrated luminosity of 3.0\invfb, are a\-na\-lysed to search for the cha…

hep-ex2015★ 12 cited

Observation of the $B_{s}^{0} \to η^{'} η^{'}$ decay

LHCb collaboration, R. Aaij, B. Adeva +703

The first observation of the $B_{s}^{0} \to η^{'} η^{'}$ decay is reported. The study is based on a sample of proton-proton collisions corresponding to $3.0$ $f b^{- 1}$ of integrated lumin…

hep-ex2015★ 19 cited

Measurement of $C P$ asymmetries and polarisation fractions in $B_{s}^{0} \to K^{* 0} K ˉ^{* 0}$ decays

LHCb collaboration, R. Aaij, B. Adeva +704

An angular analysis of the decay $B_{s}^{0} \to K^{* 0} K ˉ^{* 0}$ is performed using $pp$ collisions corresponding to an integrated luminosity of $1.0$ $f b^{- 1}$ collecte…

hep-ex2015★ 69 cited

First observation and amplitude analysis of the $B^{-} \to D^{+} K^{-} π^{-}$ decay

LHCb collaboration, R. Aaij, B. Adeva +700

The $B^{-} \to D^{+} K^{-} π^{-}$ decay is observed in a data sample corresponding to $3.0 fb^{- 1}$ of $pp$ collision data recorded by the LHCb experiment during 2011 and 2012. I…

hep-ex2015★ 56 cited

Measurement of forward $Z \to e^{+} e^{-}$ production at $s = 8$ TeV

LHCb collaboration, R. Aaij, B. Adeva +700

A measurement of the cross-section for Z-boson production in the forward region of pp collisions at 8TeV centre-of-mass energy is presented. The measurement is based on a sample of…

hep-ex2015★ 30 cited

Precise measurements of the properties of the B_1(5721)^(0,+) and B_2*(5747)^(0,+) states and observation of B^(+,0) pi^(-,+) mass structures

LHCb collaboration, R. Aaij, B. Adeva +706

Invariant mass distributions of B+pi- and B0pi+ combinations are investigated in order to study excited B mesons. The analysis is based on a data sample corresponding to 3.0 fb-1 o…

Production of associated Υ and open charm hadrons in pp collisions at s​=7 and 8TeV via double parton scattering

A model-independent confirmation of the Z(4430)− state

Measurement of the forward-backward asymmetry in Z/γ∗→μ+μ− decays and determination of the effective weak mixing angle

Forward production of Υ mesons in pp collisions at s​=7 and 8TeV

Observation of J/ψp resonances consistent with pentaquark states in Λb0​→J/ψK−p decays

Measurement of the branching fraction ratio B(Bc+​→ψ(2S)π+)/B(Bc+​→J/ψπ+)

Measurement of the ratio of branching fractions B(B0→D∗+τ−ντ​)/B(B0→D∗+μ−νμ​)

First observation of top quark production in the forward region

Search for the Λb​→Λη′ and Λb​→Λη decays with the LHCb detector

Dalitz plot analysis of B0→D0π+π− decays

A study of CP violation in B∓→Dh∓ (h=K,π) with the modes D→K∓π±π0, D→π+π−π0 and D→K+K−π0

Determination of the quark coupling strength ∣Vub​∣ using baryonic decays

First observation and measurement of the branching fraction for the decay Bs0​→Ds∗∓​K±

Observation of the B0→ρ0ρ0 decay from an amplitude analysis of B0→(π+π−)(π+π−) decays

Observation of the Bs0​→η′η′ decay

Measurement of CP asymmetries and polarisation fractions in Bs0​→K∗0Kˉ∗0 decays

First observation and amplitude analysis of the B−→D+K−π− decay

Measurement of forward Z→e+e− production at s​=8TeV