Tag: pPb

  • First collisions of pPb run with stable beams

    First collisions of pPb run with stable beams

    The LHC has just delivered the first pPb (proton-lead) collisions with stable beams of 2013 and CMS is happily running with all sub-detectors on.

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  • Colliding different particle species: the LHC’s proton-lead run

    Colliding different particle species: the LHC’s proton-lead run

    The new year brings a new type of collision at the LHC: the accelerator will smash protons and lead nuclei together, allowing CMS and the other LHC experiments to study the cold nuclear matter we expect these collisions to produce.

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  • Unexplained long-range correlations observed in pPb collisions

    Unexplained long-range correlations observed in pPb collisions

    CMS has published its first paper on proton-lead (pPb) collisions, describing the observation of a phenomenon that was previously seen first in nucleus-nucleus collisions but also detected by CMS in proton-proton (pp) collisions.

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  • Asymmetric collisions: smashing protons into lead nuclei

    Asymmetric collisions: smashing protons into lead nuclei

    Our best understanding of the early Universe tells us that a dense medium, known as the quark-gluon plasma (QGP), existed in the first microseconds after the big bang.

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