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Remi Léandre Albert Louvot

Cette personne a quitté l’EPFL

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Publications associées (96)

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First Measurement of Inclusive B -> X-s eta Decays

Mingkui Wang, Olivier Schneider, Chao Wang, Vladislav Balagura, Jean Wicht, Remi Léandre Albert Louvot

We report a first measurement of inclusive B -> X-s eta decays, where X-s is a charmless state with unit strangeness. The measurement is based on a pseudoinclusive reconstruction technique and uses a sample of 657 x 10(6)B (B) over bar pairs accumulated wi ...

2010

Precise Measurement of the CP Violation Parameter sin2 phi(1) in B-0 -> (c(c)over-bar) K-0 Decays

Mingkui Wang, Olivier Schneider, Chao Wang, Yiming Li, Aurelio Bay, Jun Yong Kim, Remi Léandre Albert Louvot

We present a precise measurement of the CP violation parameter sin2 phi(1) and the direct CP violation parameter A(f) using the final data sample of 772 x 10(6) B (B) over bar pairs collected at the gamma(4S) resonance with the Belle detector at the KEKB a ...

2012

Search for lepton flavor and lepton number violating τ decays into a lepton and two charged mesons

Olivier Schneider, Chao Wang, Aurelio Bay, Vladislav Balagura, Sun Hee Kim, Remi Léandre Albert Louvot

We search for lepton flavor and lepton number violating τ decays into a lepton (ℓ = electron or muon) and two charged mesons (h, h′ = π± or K±), τ- → ℓ- h+ h′ - and τ- → ℓ+ h- h′ -, using 671 fb-1 of data collected with the Belle detector at the KEKB asymm ...

2010

Time-dependent Dalitz plot measurement of CP parameters in B0→KS0π+π- decays

Olivier Schneider, Chao Wang, Aurelio Bay, Vladislav Balagura, Remi Léandre Albert Louvot

We present a time-dependent Dalitz plot measurement of CP violation parameters in B-0 -> K-S(0)pi(+)pi(-) decays. These results are obtained from a large data sample that contains 657x10(6) B(B)over bar pairs collected at the Upsilon(4S) resonance with the ...

American Physical Society2009

Evidence for Direct CP Violation in B-+/- -> eta h(+/-) and Observation of B-0 -> eta K-0

Mingkui Wang, Olivier Schneider, Chao Wang, Jun Yong Kim, Remi Léandre Albert Louvot

We report measurements of the branching fractions and CP asymmetries for B-+/- -> eta h(+/-) (h = K or pi) and the observation of the decay B-0 -> eta K-0 from the final data sample of 772 x 10(6) B (B) over bar pairs collected with the Belle detector at t ...

2012

Measurement of yCP in D0 meson decays to the KS0K+K- final state

Mingkui Wang, Olivier Schneider, Chao Wang, Aurelio Bay, Vladislav Balagura, Remi Léandre Albert Louvot

We present a measurement of the D-0 - (D) over bar (0) mixing parameter y(CP) using a flavor-untagged sample of D-0 -> (KSK+K-)-K-0 decays. The measurement is based on a 673 fb(-1) data sample recorded with the Belle detector at the KEKB asymmetric-energy ...

American Physical Society2009

Search for the decay B-0 -> DK*(0) followed by D -> K- pi(+)

Mingkui Wang, Olivier Schneider, Chao Wang, Jun Yong Kim, Remi Léandre Albert Louvot

We report a study of the decay B-0 -> DK+ pi(-) followed by D -> K- pi(+) , where D indicates D-0 or (D) over bar (0). We reconstruct the DK+ pi(-) state in a phase space corresponding to DK*(892)(0). The CP-violating angle phi(3) affects its decay rate vi ...

American Physical Society2012

Search for leptonic decays of D^{0} mesons

Mingkui Wang, Olivier Schneider, Chao Wang, Vladislav Balagura, Sun Hee Kim, Remi Léandre Albert Louvot

We search for the flavor-changing neutral current decays D-0 -> mu(+)mu(-) and D-0 -> e(+)e(-), and for the lepton-flavor violating decays D-0 -> e(+/-)mu(-/+) using 660 fb(-1) of data collected with the Belle detector at the KEKB asymmetric-energy e(+)e(- ...

American Physical Society2010

Observation of the doubly cabibbo-suppressed decay Ds+→K+K+π-

Olivier Schneider, Chao Wang, Vladislav Balagura, Sun Hee Kim, Remi Léandre Albert Louvot

We report the first observation of the doubly Cabibbo-suppressed decay Ds+→K+K+π- using 605fb-1 of data collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. The branching ratio with respect to its Cabibbo-favored counterpart B(Ds+ ...

2009

Evidence for the Suppressed Decay B- -> DK-, D -> K+pi-

Olivier Schneider, Chao Wang, Vladislav Balagura, Jean Wicht, Remi Léandre Albert Louvot

The suppressed decay chain B- -> DK-, D -> K+pi(-), where D indicates a (D) over bar (0) or D-0 state, provides important information on the CP-violating angle phi(3). We measure the ratio R-DK of the decay rates to the favored mode B- -> DK-, D -> K+pi(-) ...

2011

Evidence for B- -> tau(-)(nu)over-bar(tau) with a semileptonic tagging method

Mingkui Wang, Olivier Schneider, Chao Wang, Remi Léandre Albert Louvot

We present a measurement of the decay B- -> tau(-)(nu) over bar (tau) using a data sample containing 657 x 10(6) B (B) over bar pairs collected at the gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. A sample of ...

American Physical Society2010

High-statistics study of neutral-pion pair production in two-photon collisions

Olivier Schneider, Chao Wang, Remi Léandre Albert Louvot

The differential cross sections for the process gamma gamma -> pi(0)pi(0) have been measured in the kinematic range 0.6 GeV < W < 4.1 GeV, vertical bar cos theta* vertical bar < 0.8 in energy and pion scattering angle, respectively, in the gamma gamma cent ...

American Physical Society2009

Measurement of the branching fraction for the decay Υ(4S) →Υ(1S)π+π-

Mingkui Wang, Olivier Schneider, Chao Wang, Aurelio Bay, Sun Hee Kim, Remi Léandre Albert Louvot

We study transitions between Υ states with the emission of charged pions using 604.6fb-1 of data collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. The measured product branching fraction is B(Υ(4S)→Υ(1S)π+π-)×B(Υ(1S)→μ+μ-)=(2. ...

American Physical Society2009

Evidence for direct CP violation in the decay B^{±}→D^{(}*^{)}K^{±}, D→K_{S}^{0}π^{+}π^{-} and measurement of the CKM phase ϕ_{3}

Jian Wang, Mingkui Wang, Olivier Schneider, Chao Wang, Aurelio Bay, Vladislav Balagura, Remi Léandre Albert Louvot

We present a new measurement of the unitarity triangle angle phi(3) using a Dalitz plot analysis of the K-S(0)pi(+)pi(-) decay of the neutral D meson produced in B-+/- -> D-(*()) K-+/- decays. The method exploits the interference between D-0 and (D) over b ...

American Physical Society2010

Search for Time-Dependent CPT Violation in Hadronic and Semileptonic B Decays

Olivier Schneider, Chao Wang, Yiming Li, Aurelio Bay, Jun Yong Kim, Remi Léandre Albert Louvot

We report a new sensitive search for C P T violation, which includes improved measurements of the C P T-violating parameter z and the total decay-width difference normalized to the averaged width delta(d) delta(d) of the two B-d mass eigenstates . The resu ...

American Physical Society2012

Measurement of the branching fractions and the invariant mass distributions for τ^{-}→h^{-}h^{+}h^{-}ν_{τ} decays

Olivier Schneider, Chao Wang, Aurelio Bay, Sun Hee Kim, Remi Léandre Albert Louvot

We present a study of tau(-)->pi(-)pi(+)pi(-)nu(tau), tau(-) -> K-pi(+)pi(-)nu(tau), tau(-) -> K-K+ pi(-)nu(tau), and tau(-) -> K-K+K-nu(tau) decays using a 666 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric- energy e(+)e(-) co ...

American Physical Society2010

Observation of B0→ΛΛ¯K0 and B0→ΛΛ¯K*0 at Belle

Mingkui Wang, Olivier Schneider, Chao Wang, Aurelio Bay, Vladislav Balagura, Remi Léandre Albert Louvot

We study the charmless decays B -> Lambda(Lambda) over barh , where h stands for pi(+), K+, K-0, K*(+), or K*(0), using a 605 fb(-1) data sample collected at the Gamma(4S) resonance with the Belle detector at the KEKB asymmetric energy e(+)e(-) collider. W ...

American Physical Society2009

Study of the B→X(3872)(→D*0D̄0)K decay

Olivier Schneider, Chao Wang, Aurelio Bay, Vladislav Balagura, Jean Wicht, Remi Léandre Albert Louvot

We present a study of B→X(3872)K with X(3872) decaying to D0D̄0 using a sample of 657×106 BB̄ pairs recorded at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. Both D0→D0γ and D*0→D0π0 decay modes are used. We fin ...

American Physical Society2010

Measurement of cross sections of exclusive e+ e- → V P processes at sqrt(s) = 10.58 GeV

Olivier Schneider, Chao Wang, Aurelio Bay, Vladislav Balagura, Remi Léandre Albert Louvot

The cross sections for the reactions e+ e- → φ{symbol} η, φ{symbol} η′, ρη, ρ η′ have been measured using a data sample of 516 fb- 1 collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. The corresponding values of the cross secti ...

2009

Measurement of |Vub| from inclusive charmless semileptonic B decays

Mingkui Wang, Olivier Schneider, Chao Wang, Sun Hee Kim, Remi Léandre Albert Louvot

We present the partial branching fraction for inclusive charmless semileptonic B decays and the corresponding value of the Cabibbo-Kobayashi- Maskawa matrix element |Vub|, using a multivariate analysis method to access ∼90% of the B→Xu ν phase space. This ...

2010