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Remi Léandre Albert Louvot

Cette personne n’est plus à l’EPFL

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Publications associées (96)

Precise measurement of hadronic τ-decays with an η meson

Remi Léandre Albert Louvot, Olivier Schneider, Sun Hee Kim, Tagir Aushev, Chao Wang, Xiao Wang

We have studied hadronic τ decay modes involving an η meson using 490 fb-1 of data collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. The following branching fractions have been measured: B (τ- → K- η ντ) = (1.58 ± 0.05 ± 0.09) ...

2009

Observation of B^{+}→pΛ[over ¯]π^{+}π^{-} at Belle

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

We study charmless B+ meson decays to the p Lambda pi(+)pi(-) final state using a 605 fb(-1) data sample collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. There are significant signals found wit ...

American Physical Society2009

Observation of the Φ (1680) and the Y(2175) in e+e-→Φ π+π

Remi Léandre Albert Louvot, Olivier Schneider, Mingkui Wang, Chao Wang, Ji Hyun Kim, Xiao Wang, Jing Li

The cross sections for e+e-→Φ π+π- and e+e-→Φ f0(980) are measured from threshold to s=3.0GeV using initial-state radiation. The analysis is based on a data sample of 673fb-1 collected on and below the Υ(4S) resonance with the Belle detector at the KEKB as ...

American Physical Society2009

Measurement of inclusive radiative B-meson decays with a photon energy threshold of 1.7 GeV

Jean Wicht, Aurelio Bay, Remi Léandre Albert Louvot, Olivier Schneider, Sun Hee Kim, Tagir Aushev, Mingkui Wang, Chao Wang, Vladislav Balagura, Jing Li

Using 605fb-1 of data collected at the Υ(4S) resonance we present a measurement of the inclusive radiative B-meson decay channel, B→Xsγ. For the lower photon energy thresholds of 1.7, 1.8, 1.9, and 2.0 GeV, as defined in the rest frame of the B meson, we m ...

2009

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

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

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

Search for lepton-flavor-violating τ decay into a lepton and an f0 (980) meson

Aurelio Bay, Remi Léandre Albert Louvot, Olivier Schneider, Tagir Aushev, Chao Wang, Xiao Wang, Jing Li

We search for lepton-flavor-violating τ decays into a lepton (electron or muon) and an f0 (980) meson using 671 fb-1 of data collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. No events are observed and we set the following 90% ...

2009

Dalitz analysis of B→Kπ+ψ′ decays and the Z(4430)

Aurelio Bay, Remi Léandre Albert Louvot, Olivier Schneider, Tagir Aushev, Mingkui Wang, Chao Wang, Vladislav Balagura, Ji Hyun Kim, Xiao Wang

From a Dalitz plot analysis of B→Kπ+ψ′ decays, we find a signal for Z(4430)+→π+ψ′ with a mass M=(4443-12-13+15+19)MeV/ c2, width Γ=(107-43-56+86+74)MeV, product branching fraction B(B̄0→K-Z(4430)+)×B(Z(4430)+→π+ψ′)=(3.2-0.9-1. 6+1.8+5.3)×10-5, and signific ...

American Physical Society2009

Measurements of charmless hadronic b→s penguin decays in the π+π-K+π- final state and first observation of B0→ρ0K+π-

Aurelio Bay, Remi Léandre Albert Louvot, Olivier Schneider, Mingkui Wang, Chao Wang, Vladislav Balagura, Ji Hyun Kim, Jing Li

We report measurements of charmless hadronic B0 decays into the π+π-K+π- final state. The analysis uses a sample of 657×106 BB̄ pairs collected with the Belle detector at the KEKB asymmetric-energy e+e- collider at the resonance. The decay B0→ρ0K+π- is obs ...

American Physical Society2009

High-statistics study of ηπ0 production in two-photon collisions

Remi Léandre Albert Louvot, Olivier Schneider, Chao Wang, Ji Hyun Kim, Jing Li

The differential cross section for the process γγ→η π0 has been measured in the kinematic range 0.84GeV

American Physical Society2009

Measurement of the e+e-→J/ψcc¯ cross section at s≈10.6 GeV

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

We present a new measurement of the e(+)e(-)-> J/psi c(c)over bar cross section where the c(c)over bar pair can fragment either into charmed hadrons or a charmonium state. In the former case the J/psi and a charmed hadron are reconstructed, while the latte ...

American Physical Society2009

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

Aurelio Bay, Remi Léandre Albert Louvot, Olivier Schneider, Tagir Aushev, Mingkui Wang, Chao Wang, Vladislav Balagura, Jing Li

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

Evidence of time-dependent CP violation in the decay B^{0}→D^{+}D^{-}

Jean Wicht, Aurelio Bay, Remi Léandre Albert Louvot, Nicolas Zwahlen, Olivier Schneider, Tagir Aushev, Chao Wang, Vladislav Balagura, Jing Li

We report a measurement of the CP-odd fraction and the time-dependent CP violation in B-0 -> D*+D*- decays, using 657x10(6) BB events collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We measure ...

American Physical Society2009

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

Aurelio Bay, Remi Léandre Albert Louvot, Olivier Schneider, Tagir Aushev, Chao Wang, Vladislav Balagura, Xiao Wang, Jing Li

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

Measurement of B→Ds(*)Kπ branching fractions

Aurelio Bay, Remi Léandre Albert Louvot, Nicolas Zwahlen, Olivier Schneider, Mingkui Wang, Chao Wang, Vladislav Balagura, Ji Hyun Kim

We report a measurement of the exclusive B+ meson decay to the D-s(()K-)(+)pi(+) final state using 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. We use D-s - ...

American Physical Society2009

Measurement of D^{+}→K_{S}^{0}K^{+} and D_{s}^{+}→K_{S}^{0}π^{+} branching ratios

Aurelio Bay, Remi Léandre Albert Louvot, Olivier Schneider, Sun Hee Kim, Tagir Aushev, Chao Wang, Vladislav Balagura, Ji Hyun Kim, Jing Li

We report an improved measurement of D+->(KSK+)-K-0 and D-s(+)-> K-S(0)pi(+) branching ratios using 605 fb(-1) of data collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The measured branching ratios with respect to the Cabi ...

American Physical Society2009

Evidence for B0→χc1π0 at Belle

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

American Physical Society2008

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