Now showing items 207-226 of 290

    • PDF reweighting in the Hessian matrix approach 

      Paukkunen, Hannu; Zurita, María Pía (Springer, 2014)
      We introduce the Hessian reweighting of parton distribution functions (PDFs). Similarly to the better-known Bayesian methods, its purpose is to address the compatibil- ity of new data and the quantitative modifications ...
    • A precise measurement of the B0 meson oscillation frequency 

      LHCb Collaboration; Adeva Andany, Bernardo; Dosil Suárez, Álvaro; Fernández Albor, Víctor Manuel; Gallas Torreira, Abraham Antonio; Hernando Morata, José Ángel; Lemos Cid, Edgar; Lucio Martínez, Miriam; Martínez Santos, Diego; Plo Casasus, Máximo; Romero Vidal, Antonio; Saborido Silva, Juan José; Sanmartín Sedes, Brais; Santamarina Ríos, Cibrán; Vázquez Regueiro, Pablo; Vázquez Sierra, Carlos; Vieites Díaz, María (Springer, 2016)
      The oscillation frequency, Δmd, of B0 mesons is measured using semileptonic decays with a D− or D∗− meson in the final state. The data sample corresponds to 3.0fb−1 of pp collisions, collected by the LHCb experiment at ...
    • Precise measurements of the properties of the B1(5721)0,+ and B *2(5747)0,+ states and observation of B+,0π−,+ mass structures 

      LHCb Collaboration; Adeva Andany, Bernardo; Dosil Suárez, Álvaro; Fernández Albor, Víctor Manuel; Gallas Torreira, Abraham Antonio; García Pardiñas, Julián; Hernando Morata, José Ángel; Plo Casasus, Máximo; Romero Vidal, Antonio; Saborido Silva, Juan José; Sanmartín Sedes, Brais; Santamarina Ríos, Cibrán; Vázquez Regueiro, Pablo; Vázquez Sierra, Carlos; Vieites Díaz, María (Springer, 2015)
      Invariant mass distributions of B+π− and B0π+ combinations are investigated in order to study excited B mesons. The analysis is based on a data sample corresponding to 3.0 fb−1 of pp collision data, recorded by the LHCb ...
    • Precision measurement of the B0s–B0s oscillation frequency with the decay B0s →D−sπ+ 

      LHCb Collaboration; Adeva Andany, Bernardo; Álvarez Cartelle, Paula; Dosil Suárez, Álvaro; Fernández Albor, Víctor Manuel; Gallas Torreira, Abraham Antonio; Hernando Morata, José Ángel; Pazos Álvarez, Antonio; Pérez Trigo, Eliseo; Plo Casasus, Máximo; Rodríguez Pérez, Pablo; Romero Vidal, Antonio; Saborido Silva, Juan José; Sanmartín Sedes, Brais; Santamarina Ríos, Cibrán; Seco Miguélez, Marcos Antonio; Vázquez Regueiro, Pablo (IOP Publishing, 2013)
      A key ingredient to searches for physics beyond the Standard Model in B0s mixing phenomena is the measurement of the B0s – B0 s oscillation frequency, which is equivalent to the mass difference 1ms of the B0s mass ...
    • Precision measurement of the ratio of the Λ0b to B¯ 0 lifetimes 

      LHCb Collaboration; Adeva Andany, Bernardo; Álvarez Cartelle, Paula; Dosil Suárez, Álvaro; Fernández Albor, Víctor Manuel; Gallas Torreira, Abraham Antonio; Hernando Morata, José Ángel; Pazos Álvarez, Antonio; Pérez Trigo, Eliseo; Plo Casasus, Máximo; Rodríguez Pérez, Pablo; Romero Vidal, Antonio; Saborido Silva, Juan José; Sanmartín Sedes, Brais; Santamarina Ríos, Cibrán; Seco Miguélez, Marcos Antonio; Vázquez Regueiro, Pablo; Vázquez Sierra, Carlos (Elsevier, 2014)
      The LHCb measurement of the lifetime ratio of the Λ b 0 baryon to the B¯ 0 meson is updated using data corresponding to an integrated luminosity of 3.0 fb− 1 collected using 7 and 8 TeV centre-of-mass energy pp collisions ...
    • Production of associated Y and open charm hadrons in pp collisions at √s=7 and 8 TeV via double parton scattering 

      LHCb Collaboration; Dosil Suárez, Álvaro; Fernández Albor, Víctor Manuel; Gallas Torreira, Abraham Antonio; García Pardiñas, Julián; Lemos Cid, Edgar; Lucio Martínez, Miriam; Martínez Santos, Diego; Plo Casasus, Máximo; Prisciandaro, Jessica; Ramos Pernas, Miguel; Romero Vidal, Antonio; Saborido Silva, Juan José; Sanmartín Sedes, Brais; Santamarina Ríos, Cibrán; Vázquez Regueiro, Pablo; Vázquez Sierra, Carlos; Vieites Díaz, María (Springer, 2016)
      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−1 accumulated with the LHCb detector. The observation ...
    • Production of charged pions, kaons and protons at large transverse momenta in pp and Pb–Pb collisions at √sNN=2.76TeV 

      ALICE Collaboration; Armesto Pérez, Néstor; González Ferreiro, Elena; Pajares Vales, Carlos; Salgado López, Carlos Alberto (Elsevier, 2014)
      Transverse momentum spectra of π±, K±and p(¯ p)up to pT=20GeV/cat mid-rapidity in pp, peripheral (60–80%) and central (0–5%) Pb–Pb collisions at √sNN=2.76TeVhave been measured using the ALICE detector at the Large Hadron ...
    • Production of inclusive ϒ(1S) and ϒ(2S) in p–Pb collisions at √sNN=5.02 TeV 

      ALICE Collaboration; Armesto Pérez, Néstor; González Ferreiro, Elena; Pajares Vales, Carlos; Salgado López, Carlos Alberto (Elsevier, 2015)
      We report on the production of inclusive Υ(1S) and Υ(2S) in p–Pb collisions at √sNN=5.02TeVat the LHC. The measurement is performed with the ALICE detector at backward (−4.46 <ycms<−2.96) and forward (2.03 <ycms<3.53) ...
    • Production of K∗(892)0 and ϕ(1020) in p–Pb collisions at √sNN= 5.02 TeV 

      ALICE Collaboration; González Ferreiro, Elena (Springer, 2016)
      The production ofK∗(892)0 and φ(1020) mesons has been measured in p–Pb collisions at √ sNN = 5.02 TeV. K∗0 and φ are reconstructed via their decay into charged hadrons with the ALICE detector in the rapidity range −0.5 ...
    • Production of muons from heavy-flavour hadron decays in p–Pb collisions at √sNN=5.02 TeV 

      ALICE Collaboration; González Ferreiro, Elena (Elsevier, 2017)
      The production of muons from heavy-flavour hadron decays in p–Pb collisions at √sNN=5.02TeVwas studied for 2 <pT<16GeV/cwith the ALICE detector at the CERN LHC. The measurement was performed at forward (p-going direction) ...
    • Production of Sigma (1385)(+/-) and Xi (1530)(0) in proton-proton collisions at root s=7 TeV 

      ALICE Collaboration; Armesto Pérez, Néstor; González Ferreiro, Elena; Pajares Vales, Carlos; Salgado López, Carlos Alberto (Springer, 2015)
      The production of the strange and double-strange baryon resonances (Σ(1385)±, Ξ(1530)0) has been measured at mid-rapidity (|y| <0.5) in proton–proton collisions at √s = 7 TeV with the ALICE detector at the LHC. Transverse ...
    • Production of Σ(1385)± and Ξ(1530)0 in p–Pb collisions at √sNN=5.02 TeV 

      ALICE Collaboration; González Ferreiro, Elena (Springer, 2017)
      The transverse momentum distributions of the strange and double-strange hyperon resonances ( (1385) ±,(1530)0) produced in p–Pb collisions at √sNN = 5.02 TeV were measured in the rapidity range −0.5 < yCMS < 0 for event ...
    • Prompt and nonprompt J/ψ production and nuclear modification in pPb collisions at √sNN = 8.16 TeV 

      LHCb Collaboration; Adeva Andany, Bernardo; Borsato, Martino; Chobanova, Veronika; Cid Vidal, Xabier; Dosil Suárez, Álvaro; Fernández Prieto, Antonio; García Pardiñas, Julián; Lemos Cid, Edgar; Lucio Martínez, Miriam; Martínez Santos, Diego; Plo Casasus, Máximo; Prisciandaro, Jessica; Ramos Pernas, Miguel; Romero Vidal, Antonio; Saborido Silva, Juan José; Sanmartín Sedes, Brais; Santamarina Ríos, Cibrán; Vázquez Regueiro, Pablo; Vieites Díaz, María; Vázquez Sierra, Carlos (Elsevier, 2017)
      The production of J/ψ mesons is studied in proton-lead collisions at the centre-of-mass energy per nucleon pair √ sNN = 8.16 TeVwith the LHCb detector at the LHC. The double differential cross-sections of prompt and ...
    • Pseudorapidity dependence of the anisotropic flow of charged particles in Pb–Pb collisions at √sNN=2.76 TeV 

      ALICE Collaboration; González Ferreiro, Elena (Elsevier, 2016)
      We present measurements of the elliptic (v2), triangular (v3) and quadrangular (v4) anisotropic azimuthal flow over a wide range of pseudorapidities (−3.5 <η<5). The measurements are performed with Pb–Pb collisions at ...
    • Quarkonium: a theory overview 

      González Ferreiro, Elena (Elsevier, 2019)
      Quarkonium has long been proposed as one of the golden probes to identify the phase transition from confined hadronic matter to the deconfined quark-gluon plasma in heavy-ion collisions. Since then, we have achieved a ...
    • Rapidity and transverse-momentum dependence of the inclusive J/ψ nuclear modification factor in p-Pb collisions at √sNN= 5.02 TeV 

      ALICE Collaboration; Armesto Pérez, Néstor; González Ferreiro, Elena; Pajares Vales, Carlos; Salgado López, Carlos Alberto (Springer, 2015)
      We have studied the transverse-momentum (p T) dependence of the inclusive J/ψ production in p-Pb collisions at √sNN= 5.02 TeV, in three center-of-mass rapidity (y cms) regions, down to zero p T. Results in the forward and ...
    • Real-time discrimination of photon pairs using machine learning at the LHC 

      Benson, Sean; Casais Vidal, Adrián; Cid Vidal, Xabier; Puig Navarro, Albert (SciPost Foundation, 2019)
      ALP-mediated decays and other as-yet unobserved B decays to di-photon final states are a challenge to select in hadron collider environments due to the large backgrounds that come directly from the p p collision. We present ...
    • Reggeon field theory for large Pomeron loops 

      Altinoluk, Tolga; Kovner, Alex; Levin, Eugene; Lublinsky, Michael (Springer, 2014)
      We analyze the range of applicability of the high energy Reggeon Field Theory HRFT derived in [1]. We show that this theory is valid as long as at any intermediate value of rapidity η throughout the evolution at least ...
    • Resonances and CP violation in B0s and B¯0s→J/ψK+K− decays in the mass region above the ϕ(1020) 

      LHCb Collaboration; Adeva Andany, Bernardo; Borsato, Martino; Chobanova, Veronika; Cid Vidal, Xabier; Dosil Suárez, Álvaro; Fernández Prieto, Antonio; García Pardiñas, Julián; Lemos Cid, Edgar; Lucio Martínez, Miriam; Martínez Santos, Diego; Plo Casasus, Máximo; Prisciandaro, Jessica; Ramos Pernas, Miguel; Romero Vidal, Antonio; Saborido Silva, Juan José; Sanmartín Sedes, Brais; Santamarina Ríos, Cibrán; Vázquez Regueiro, Pablo; Vieites Díaz, María; Vázquez Sierra, Carlos (Springer, 2017)
      The decays of B 0s and B¯0s mesons into the J/ψK + K − final state are studied in the K + K − mass region above the ϕ(1020) meson in order to determine the resonant substructure and measure the CP-violating phase, ϕ s , ...
    • Roper resonances and quasi-normal modes of Skyrmions 

      Adam, Christoph; Haberichter, M.; Romanczukiewicz, T.; Wereszczynski, Andrzej (Springer, 2018)
      Radial vibrations of charge one hedgehog Skyrmions in the full Skyrme model are analysed. We investigate how the properties of the lowest resonance modes (quasi normal modes) — their frequencies and widths — depend on the ...





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