Observation of X (3872) production in pp collisions at s=7~TeV
LHCb Collaboration joel. bressieux@ epfl. ch… - The European Physical …, 2012 - Springer
LHCb Collaboration joel. bressieux@ epfl. ch, R Aaij, C Abellan Beteta, B Adeva, M Adinolfi…
The European Physical Journal C, 2012•SpringerAbstract Using 34.7 pb− 1 of data collected with the LHCb detector, the inclusive production
of the X (3872) meson in pp collisions at s=7~TeV is observed for the first time. Candidates
are selected in the X (3872)→ J/ψπ+ π− decay mode, and used to measure where σ (pp→ X
(3872)+ anything) is the inclusive production cross section of X (3872) mesons with rapidity
in the range 2.5–4.5 and transverse momentum in the range 5–20 GeV/c. In addition the
masses of both the X (3872) and ψ (2 S) mesons, reconstructed in the J/ψπ+ π− final state …
of the X (3872) meson in pp collisions at s=7~TeV is observed for the first time. Candidates
are selected in the X (3872)→ J/ψπ+ π− decay mode, and used to measure where σ (pp→ X
(3872)+ anything) is the inclusive production cross section of X (3872) mesons with rapidity
in the range 2.5–4.5 and transverse momentum in the range 5–20 GeV/c. In addition the
masses of both the X (3872) and ψ (2 S) mesons, reconstructed in the J/ψπ+ π− final state …
Abstract
Abstract Using 34.7 pb− 1 of data collected with the LHCb detector, the inclusive production of the X (3872) meson in pp collisions at s=7~TeV is observed for the first time. Candidates are selected in the X (3872)→ J/ψπ+ π− decay mode, and used to measure where σ (pp→ X (3872)+ anything) is the inclusive production cross section of X (3872) mesons with rapidity in the range 2.5–4.5 and transverse momentum in the range 5–20 GeV/c. In addition the masses of both the X (3872) and ψ (2 S) mesons, reconstructed in the J/ψπ+ π− final state, are measured to be m_ X (3872)= 3871.95\pm0. 48 stat)\pm0.12 syst)\mathrmMeV/c^2 and m_ψ(2S)=3686.12\pm0.06 stat)\pm0.10 syst)\mathrmMeV/c^2.
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