Neal Gauvin

Cette personne n’est plus à l’EPFL

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Publications associées (64)

Determination of the Sign of the Decay Width Difference in the B-s(0) System

Olivier Schneider, Aurelio Bay, Guido Haefeli, Christoph Frei, Frédéric Blanc, Tatsuya Nakada, Julien Rouvinet, Barinjaka Rakotomiaramanana, Michel De Cian, Raluca Anca Muresan

The interference between the K+K- S-wave and P-wave amplitudes in B-s(0) -> J/psi K+K- decays with the K+K- pairs in the region around the phi(1020) resonance is used to determine the variation of the difference of the strong phase between these amplitudes ...

2012

First Observation of the Decay B-c(+)-> J/psi pi(+)pi(-)pi(+)

Olivier Schneider, Aurelio Bay, Guido Haefeli, Christoph Frei, Frédéric Blanc, Tatsuya Nakada, Julien Rouvinet, Michel De Cian, Barinjaka Rakotomiaramanana, Raluca Anca Muresan

The decay Bc(+) -> J/psi pi(+) pi(-) pi(+) is observed for the first time, using 0.8 fb(-1) of pp collisions at root s = 7 TeV collected by the LHCb experiment. The ratio of branching fractions B(B-c(+) -> J/psi pi(+) pi(-) pi(+))/B(B-c(+) -> J/psi pi(+)) ...

2012

Differential Branching Fraction and Angular Analysis of the Decay B-0 -> K*(0)mu(+)mu(-)

Olivier Schneider, Aurelio Bay, Guido Haefeli, Christoph Frei, Frédéric Blanc, Tatsuya Nakada, Julien Rouvinet, Barinjaka Rakotomiaramanana, Michel De Cian, Raluca Anca Muresan

The angular distributions and the partial branching fraction of the decay B-0 -> K*(0)mu(+)mu(-) are studied by using an integrated luminosity of 0.37 fb(-1) of data collected with the LHCb detector. The forward-backward asymmetry of the muons, A(FB), the ...

2012

Search for the X(4140) state in B+ -> J/psi phi K+ decays

Olivier Schneider, Aurelio Bay, Guido Haefeli, Christoph Frei, Frédéric Blanc, Tatsuya Nakada, Julien Rouvinet, Barinjaka Rakotomiaramanana, Michel De Cian, Raluca Anca Muresan

A search for the X(4140) state in B+ -> J/psi phi K+ decays is performed with 0.37 fb(-1) of pp collisions at root s = 7 TeV collected by the LHCb experiment. No evidence for this state is found, in 2.4 sigma disagreement with a measurement by CDF. An uppe ...

American Physical Society2012

Measurement of Gamma production in pp collisions at root s=7 TeV

Olivier Schneider, Aurelio Bay, Guido Haefeli, Christoph Frei, Frédéric Blanc, Tatsuya Nakada, Julien Rouvinet, Michel De Cian, Barinjaka Rakotomiaramanana, Raluca Anca Muresan

The production of Gamma (1S), Gamma (2S) and Gamma (3S) mesons in proton-proton collisions at the centre-of-mass energy of root s = 7 TeV is studied with the LHCb detector. The analysis is based on a data sample of 25 pb(-1) collected at the Large Hadron C ...

2012

Search for Lepton Number Violating Decays B+ -> pi(-)mu(+)mu(+) and B+ -> K-mu(+)mu(+)

Olivier Schneider, Aurelio Bay, Guido Haefeli, Christoph Frei, Frédéric Blanc, Tatsuya Nakada, Julien Rouvinet, Michel De Cian, Barinjaka Rakotomiaramanana, Raluca Anca Muresan

A search is performed for the lepton number violating decay B+ -> h(-)mu(+)mu(+), where h(-) represents a K- or a pi(-), using an integrated luminosity of 36 pb(-1) of data collected with the LHCb detector. The decay is forbidden in the standard model but ...

2012

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

Olivier Schneider, Aurelio Bay, Guido Haefeli, Christoph Frei, Frédéric Blanc, Tatsuya Nakada, Julien Rouvinet, Barinjaka Rakotomiaramanana, Michel De Cian, Raluca Anca Muresan

Charged particle production in proton-proton collisions is studied with the LHCb detector at a centre-of-mass energy of root s = 7 TeV in different intervals of pseudorapidity eta. Charged particles are reconstructed close to the interaction region in the ...

2012

Analysis of the resonant components in (B)over-bar(s)(0) -> J/psi pi(+)pi(-)

Olivier Schneider, Aurelio Bay, Guido Haefeli, Christoph Frei, Frédéric Blanc, Tatsuya Nakada, Julien Rouvinet, Michel De Cian, Barinjaka Rakotomiaramanana, Raluca Anca Muresan

The decay (B) over bar (0)(s) -> J/psi pi(+)pi(-) can be exploited to study CP violation. A detailed understanding of its structure is imperative in order to optimize its usefulness. An analysis of this three-body final state is performed using a 1.0 fb(-1 ...

American Physical Society2012

Evidence for CP Violation in Time- Integrated D-0 -> h(-)h(+) Decay Rates

Olivier Schneider, Aurelio Bay, Guido Haefeli, Christoph Frei, Frédéric Blanc, Tatsuya Nakada, Julien Rouvinet, Barinjaka Rakotomiaramanana, Michel De Cian, Raluca Anca Muresan

A search for time-integrated CP violation in D-0 -> h(-)h(+) (h = K, pi) decays is presented using 0.62 fb(-1) of data collected by LHCb in 2011. The flavor of the charm meson is determined by the charge of the slow pion in the D*(+) -> D-0 pi(+) and D*(-) ...

2012

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

Olivier Schneider, Aurelio Bay, Guido Haefeli, Christoph Frei, Frédéric Blanc, Tatsuya Nakada, Julien Rouvinet, Barinjaka Rakotomiaramanana, Michel De Cian, Raluca Anca Muresan

Using 34.7 pb(-1) of data collected with the LHCb detector, the inclusive production of the X(3872) meson in pp collisions at root s = 7 TeV is observed for the first time. Candidates are selected in the X(3872) -> J/psi pi(+)pi(-) decay mode, and used to ...

2012

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