Publications de Lino Ferreira Lopes

Evidence for Modification of b Quark Hadronization in High-Multiplicity pp Collisions at √s=13 TeV

Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Lino Ferreira Lopes, Surapat Ek-In, Vladimir Macko, Ana Bárbara Rodrigues Cavalcante, Michel De Cian, Sebastian Schulte, Veronica Sølund Kirsebom, Carina Trippl, Sara Celani, Serhii Cholak, Elena Graverini, Maria Vieites Diaz, Ettore Zaffaroni, Donal Patrick Hill, Renato Quagliani, Elisabeth Maria Niel, Aravindhan Venkateswaran

The production rate of B-s(0) mesons relative to B-0 mesons is measured by the LHCb experiment in pp collisions at a center-of-mass energy √s = 13 TeV over the forward rapidity interval 2 < y < 4.5 as a function of the charged particle multiplicity measure ...

Amer Physical Soc2023

Multidifferential study of identified charged hadron distributions in Z-tagged jets in proton-proton collisions at √s=13 TeV

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Lino Ferreira Lopes, Surapat Ek-In, Vladimir Macko, Ana Bárbara Rodrigues Cavalcante, Michel De Cian, Sebastian Schulte, Veronica Sølund Kirsebom, Carina Trippl, Sara Celani, Serhii Cholak, Elena Graverini, Maria Vieites Diaz, Ettore Zaffaroni, Donal Patrick Hill, Renato Quagliani, Elisabeth Maria Niel, Aravindhan Venkateswaran

Jet fragmentation functions are measured for the first time in proton-proton collisions for charged pions, kaons, and protons within jets recoiling against a Z boson. The charged-hadron distributions are studied longitudinally and transversely to the jet d ...

American Physical Society2023

Measurement of CP asymmetries in D(s)+ -> ηπ+ and D(s)+ -> η'π+ decays

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Matthieu Philippe Luther Marinangeli, Lino Ferreira Lopes, Surapat Ek-In, Vladimir Macko, Ana Bárbara Rodrigues Cavalcante, Michel De Cian, Sebastian Schulte, Veronica Sølund Kirsebom, Carina Trippl, Sara Celani, Serhii Cholak, Elena Graverini, Maria Vieites Diaz, Ettore Zaffaroni, Donal Patrick Hill, Renato Quagliani, Elisabeth Maria Niel

Searches for CP violation in the decays D(s)+ -> ηπ+ and D(s)+ -> η'π+ are performed using pp collision data corresponding to 6 fb(-1) of integrated luminosity collected by the LHCb experiment. The calibration channels D(s)+ -> ηπ+ and D(s)+ -> ϕπ+ are use ...

Springer Nature2023

Evidence for the decays B0→D¯(∗)0ϕ and updated measurements of the branching fractions of the B0s→D¯(∗)0ϕ decays

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Lino Ferreira Lopes, Surapat Ek-In, Vladimir Macko, Sebastian Schulte, Veronica Sølund Kirsebom, Carina Trippl, Sara Celani, Serhii Cholak, Elena Graverini, Maria Vieites Diaz, Ettore Zaffaroni, Donal Patrick Hill, Renato Quagliani, Elisabeth Maria Niel, Aravindhan Venkateswaran

Evidence for the decays B-0 -> (D) over bar (0)phi and B-0 -> (D) over bar (*0) phi is reported with a significance of 3.6 sigma and 4.3 sigma, respectively. The analysis employs pp collision data at centre-of-mass energies root s = 7, 8 and 13TeV collecte ...

Springer Nature2023

Publisher Erratum: Open charm production and asymmetry in pNe collisions at √sNN =68.5 GeV (vol 83, 541, 2023)

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Lino Ferreira Lopes, Surapat Ek-In, Vladimir Macko, Ana Bárbara Rodrigues Cavalcante, Michel De Cian, Sebastian Schulte, Veronica Sølund Kirsebom, Carina Trippl, Sara Celani, Serhii Cholak, Elena Graverini, Maria Vieites Diaz, Ettore Zaffaroni, Donal Patrick Hill, Renato Quagliani, Elisabeth Maria Niel, Aravindhan Venkateswaran

Springer2023

Observation of the decays B(s)0 → D(s1)(2536)∓K±

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Lino Ferreira Lopes, Surapat Ek-In, Sebastian Schulte, Veronica Sølund Kirsebom, Carina Trippl, Sara Celani, Serhii Cholak, Elena Graverini, Ettore Zaffaroni, Donal Patrick Hill, Renato Quagliani, Elisabeth Maria Niel, Aravindhan Venkateswaran, Dimitrios Kaminaris, Vitalii Lisovskyi, Luis Miguel Garcia Martin

This paper reports the observation of the decays B(s)(0) → D(s1)(2536)∓K± using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb(-1). The branching fractions of these decays are measured relat ...

Springer Nature2023

Evidence of a J=ψK0S Structure in B0 → J=ψφK0S Decays

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Lino Ferreira Lopes, Surapat Ek-In, Vladimir Macko, Michel De Cian, Sebastian Schulte, Veronica Sølund Kirsebom, Carina Trippl, Sara Celani, Serhii Cholak, Elena Graverini, Maria Vieites Diaz, Ettore Zaffaroni, Donal Patrick Hill, Renato Quagliani, Elisabeth Maria Niel, Aravindhan Venkateswaran

An amplitude analysis of B0 -> J=psi phi K0S decays is performed using proton-proton collision data, corresponding to an integrated luminosity of 9 fb-1, collected with the LHCb detector at center-of-mass energies of 7, 8, and 13 TeV. Evidence with a signi ...

Amer Physical Soc2023

Observation of New Ω 0 cStates Decaying to the Ξc plus K- Final State

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Lino Ferreira Lopes, Surapat Ek-In, Vladimir Macko, Michel De Cian, Sebastian Schulte, Veronica Sølund Kirsebom, Carina Trippl, Sara Celani, Serhii Cholak, Elena Graverini, Maria Vieites Diaz, Ettore Zaffaroni, Donal Patrick Hill, Renato Quagliani, Elisabeth Maria Niel, Aravindhan Venkateswaran

Two new excited states, S2c(3185)0 and S2c(3327)0, are observed in the E thorn c K- invariant-mass spectrum using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb-1. Five previously observed e ...

Amer Physical Soc2023

Measurement of the CKM angle γ using the B±→ D*h± channels

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Lino Ferreira Lopes, Surapat Ek-In, Vladimir Macko, Sebastian Schulte, Veronica Sølund Kirsebom, Carina Trippl, Sara Celani, Serhii Cholak, Elena Graverini, Ettore Zaffaroni, Donal Patrick Hill, Renato Quagliani, Elisabeth Maria Niel, Aravindhan Venkateswaran, Dimitrios Kaminaris, Vitalii Lisovskyi, Luis Miguel Garcia Martin

A measurement of the CP-violating observables from B± → DK± and B± → Dπ± decays is presented, where D*(D) is an admixture of D*0 and D(-)0 (D0 and D(-)0) states and is reconstructed through the decay chains D → Dπ0/γ and D → K(S)0π(+)π(-)/K(S)0K(+)K ...

Springer Nature2023

Study of the Bose-Einstein correlations of same-sign pions in proton-lead collisions

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Lino Ferreira Lopes, Surapat Ek-In, Vladimir Macko, Ana Bárbara Rodrigues Cavalcante, Michel De Cian, Sebastian Schulte, Veronica Sølund Kirsebom, Carina Trippl, Sara Celani, Serhii Cholak, Elena Graverini, Maria Vieites Diaz, Ettore Zaffaroni, Donal Patrick Hill, Renato Quagliani, Elisabeth Maria Niel, Aravindhan Venkateswaran

Correlations of same-sign charged pions are analysed using proton-lead collision data collected by the LHCb experiment at a nucleon-nucleon centre-of-mass energy of 5.02TeV, corresponding to an integrated luminosity of 1.06 nb(-1). Bose-Einstein correlatio ...

Springer Nature2023

Study of B-c(+) decays to charmonia and three light hadrons

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Guillaume Max Pietrzyk, Matthieu Philippe Luther Marinangeli, Lino Ferreira Lopes, Surapat Ek-In, Vladimir Macko, Tara Nanut, Ana Bárbara Rodrigues Cavalcante, Federico Leo Redi, Michel De Cian, Sebastian Schulte, Veronica Sølund Kirsebom, Carina Trippl, Sara Celani, Serhii Cholak, Elena Graverini, Maria Vieites Diaz, Ettore Zaffaroni, Donal Patrick Hill, Renato Quagliani

Using proton-proton collision data, corresponding to an integrated luminosity of 9 fb(-1) collected with the LHCb detector, seven decay modes of the B-C(+) meson into a J/psi or psi(2S) meson and three charged hadrons, kaons or pions, are studied. The deca ...

Springer Nature2022

Measurement of the photon polarization in Lambda(0)(b) -> Lambda gamma decays

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Guillaume Max Pietrzyk, Matthieu Philippe Luther Marinangeli, Lino Ferreira Lopes, Surapat Ek-In, Vladimir Macko, Tara Nanut, Ana Bárbara Rodrigues Cavalcante, Federico Leo Redi, Michel De Cian, Sebastian Schulte, Veronica Sølund Kirsebom, Carina Trippl, Sara Celani, Serhii Cholak, Elena Graverini, Maria Vieites Diaz, Ettore Zaffaroni, Donal Patrick Hill, Renato Quagliani

The photon polarization in b -> s gamma transitions is measured for the first time in radiative b -baryon decays exploiting the unique spin structure of Lambda(0)(b)-> Lambda(gamma) decays. A data sample corresponding to an integrated luminosity of 6 fb(-1 ...

American Physical Society2022

Searches for rare B-s(0) and B-0 decays into four muons

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Guillaume Max Pietrzyk, Matthieu Philippe Luther Marinangeli, Lino Ferreira Lopes, Surapat Ek-In, Vladimir Macko, Ana Bárbara Rodrigues Cavalcante, Federico Leo Redi, Michel De Cian, Sebastian Schulte, Veronica Sølund Kirsebom, Carina Trippl, Sara Celani, Serhii Cholak, Elena Graverini, Maria Vieites Diaz, Ettore Zaffaroni, Donal Patrick Hill, Renato Quagliani

Searches for rare B-s(0) and B-0 decays into four muons are performed using proton-proton collision data recorded by the LHCb experiment, corresponding to an integrated luminosity of 9 fb(-1). Direct decays and decays via light scalar and J/psi resonances ...

Springer Nature2022

Search for the radiative Xi(-)(b) -> Xi(-)gamma decay

Aurelio Bay, Minh Tâm Tran, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Guillaume Max Pietrzyk, Matthieu Philippe Luther Marinangeli, Lino Ferreira Lopes, Surapat Ek-In, Maria Elena Stramaglia, Vladimir Macko, Tara Nanut, Ana Bárbara Rodrigues Cavalcante, Federico Leo Redi, Michel De Cian, Sebastian Schulte, Veronica Sølund Kirsebom, Carina Trippl, Sara Celani, Serhii Cholak, Elena Graverini, Maria Vieites Diaz, Ettore Zaffaroni, Donal Patrick Hill

The first search for the rare radiative decay Xi(-)(b) -> Xi(-)gamma is performed using data collected by the LHCb experiment in proton-proton collisions at a center-of-mass energy of 13TeV, corresponding to an integrated luminosity of 5.4 fb(-1). The Xi(- ...

Springer Nature2022

J/ψ photoproduction in Pb-Pb peripheral collisions at √sNN=5 TeV

Aurelio Bay, Minh Tâm Tran, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Guillaume Max Pietrzyk, Matthieu Philippe Luther Marinangeli, Lino Ferreira Lopes, Violaine Bellée, Pavol Stefko, Surapat Ek-In, Maria Elena Stramaglia, Vladimir Macko, Tara Nanut, Ana Bárbara Rodrigues Cavalcante, Federico Leo Redi, Michel De Cian, Sebastian Schulte, Veronica Sølund Kirsebom, Carina Trippl, Sara Celani, Serhii Cholak, Elena Graverini, Maria Vieites Diaz, Ettore Zaffaroni, Donal Patrick Hill

The photoproduction of J/ψ mesons at low transverse momentum is studied in peripheral lead-lead collisions collected by the LHCb Collaboration at a center-of-mass energy per nucleon pair of 5TeV, corresponding to an integrated luminosity of 210 μb−1. The J ...

2022

Study of Z Bosons Produced in Association with Charm in the Forward Region

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Guillaume Max Pietrzyk, Matthieu Philippe Luther Marinangeli, Lino Ferreira Lopes, Surapat Ek-In, Vladimir Macko, Tara Nanut, Ana Bárbara Rodrigues Cavalcante, Federico Leo Redi, Michel De Cian, Sebastian Schulte, Veronica Sølund Kirsebom, Carina Trippl, Sara Celani, Serhii Cholak, Elena Graverini, Maria Vieites Diaz, Ettore Zaffaroni, Donal Patrick Hill, Renato Quagliani

Events containing a Z boson and a charm jet are studied for the first time in the forward region of proton-proton collisions. The data sample used corresponds to an integrated luminosity of 6 fb(-1) collected at a center-of-mass energy of 13 TeV with the L ...

AMER PHYSICAL SOC2022

Analysis of Neutral B-Meson Decays into Two Muons

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Guillaume Max Pietrzyk, Matthieu Philippe Luther Marinangeli, Lino Ferreira Lopes, Violaine Bellée, Pavol Stefko, Surapat Ek-In, Maria Elena Stramaglia, Vladimir Macko, Tara Nanut, Ana Bárbara Rodrigues Cavalcante, Federico Leo Redi, Michel De Cian, Sebastian Schulte, Veronica Sølund Kirsebom, Carina Trippl, Sara Celani, Serhii Cholak, Elena Graverini, Maria Vieites Diaz, Ettore Zaffaroni, Donal Patrick Hill

Branching fraction and effective lifetime measurements of the rare decay B0s→μ+μ− and searches for the decays B0→μ+μ− and B0s→μ+μ−γ are reported using proton-proton collision data collected with the LHCb detector at center-of-mass energies of 7, 8, and 13 ...

2022

Observation of Two New Excited Ξ 0 b States Decaying to Λ 0 b K − π +

Aurelio Bay, Minh Tâm Tran, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Guillaume Max Pietrzyk, Matthieu Philippe Luther Marinangeli, Lino Ferreira Lopes, Surapat Ek-In, Vladimir Macko, Tara Nanut, Ana Bárbara Rodrigues Cavalcante, Federico Leo Redi, Michel De Cian, Sebastian Schulte, Veronica Sølund Kirsebom, Carina Trippl, Sara Celani, Serhii Cholak, Elena Graverini, Maria Vieites Diaz, Ettore Zaffaroni, Donal Patrick Hill, Renato Quagliani

Two narrow resonant states are observed in the ??0bK??????? mass spectrum using a data sample of protonproton collisions at a center-of-mass energy of 13 TeV, collected by the LHCb experiment and corresponding to an integrated luminosity of 6 fb???1. The m ...

2022

Observation of Lambda b(0) -> D(+)p pi(-)pi(-) and Lambda b(0) -> D-*+p pi(-)pi(-) decays

Aurelio Bay, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Guillaume Max Pietrzyk, Matthieu Philippe Luther Marinangeli, Lino Ferreira Lopes, Surapat Ek-In, Vladimir Macko, Ana Bárbara Rodrigues Cavalcante, Federico Leo Redi, Michel De Cian, Sebastian Schulte, Veronica Sølund Kirsebom, Carina Trippl, Sara Celani, Serhii Cholak, Elena Graverini, Maria Vieites Diaz, Ettore Zaffaroni, Donal Patrick Hill, Renato Quagliani

The multihadron decays Lambda(0)(b) -> D(+)p pi(-)pi(-) and Lambda(0 )(b)-> D-*+p pi(-)pi(-) are observed in data corresponding to an integrated luminosity of 3fb(-1), collected in proton-proton collisions at centre-of-mass energies of 7 and 8 TeV by the L ...

Springer Nature2022

Measurement of the B0s→μ+μ− decay properties and search for the B0→μ+μ− and B0s→μ+μ−γ decays

Aurelio Bay, Minh Tâm Tran, Tatsuya Nakada, Guido Haefeli, Olivier Schneider, Frédéric Blanc, Lesya Shchutska, Guillaume Max Pietrzyk, Matthieu Philippe Luther Marinangeli, Lino Ferreira Lopes, Violaine Bellée, Pavol Stefko, Surapat Ek-In, Maria Elena Stramaglia, Vladimir Macko, Tara Nanut, Ana Bárbara Rodrigues Cavalcante, Federico Leo Redi, Michel De Cian, Sebastian Schulte, Veronica Sølund Kirsebom, Carina Trippl, Sara Celani, Serhii Cholak, Elena Graverini, Maria Vieites Diaz, Ettore Zaffaroni, Donal Patrick Hill

An improved measurement of the decay B0s→μ+μ− and searches for the decays B0→μ+μ− and B0s→μ+μ−γ are performed at the LHCb experiment using data collected in proton-proton collisions at √s=7, 8 and 13 TeV, corresponding to integrated luminosities of 1, 2 an ...

American Physical Society2022