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Λ and K$$^0$$$$_S$$ production in Pb-Pb and pp collisions with ALICE at the LHC

Hanratty, Luke David
The British Library
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Title: Λ and K$$^0$$$$_S$$ production in Pb-Pb and pp collisions with ALICE at the LHC
Author: Hanratty, Luke David
Publisher: University of Birmingham
Date: 2014
Subject: Qb Astronomy ; Qc Physics ; Sciences (General)
Description: In this work, the transverse momentum spectra of Λ and K$$^0$$$$_S$$ measured with the ALICE experiment at the LHC are discussed. Measurements are presented for colliding systems of protons, at centre of mass energies 2.76 TeV and 7 TeV, and for lead ions at a centre of mass energy of 2.76 TeV per nucleon. The spectra are discussed within a theoretical framework of a thermally equilibrated, hydrodynamically evolving system, which serves to explain the shape of the spectra for p$$_T$$ 2 GeV/c. For p$$_T$$ 6 GeV/c jet quenching is evident, but no evidence of particle species dependance in jet quenching is observed. The Λ/K$$^0$$$$_S$$ ratio shows an enhancement for 2 p$$_T$$ 6 GeV/c, peaking at 1.5 for the 5% most central Pb–Pb collisions compared to 0.6 for pp. This is discussed in terms of a coalescence model. It cannot be explained purely by enhanced baryon production, but must also involve a redistribution of particles within p$$_T$$. This supports the hydrodynamical...
• Dissertation
Select

Λ and K$$^0$$$$_S$$ production in Pb-Pb and pp collisions with ALICE at the LHC

Hanratty, Luke David
University of Birmingham
Available
Title: Λ and K$$^0$$$$_S$$ production in Pb-Pb and pp collisions with ALICE at the LHC
Author: Hanratty, Luke David
Date: 2014
Subject: Qb Astronomy ; Qc Physics
Description: In this work, the transverse momentum spectra of Λ and K$$^0$$$$_S$$ measured with the ALICE experiment at the LHC are discussed. Measurements are presented for colliding systems of protons, at centre of mass energies 2.76 TeV and 7 TeV, and for lead ions at a centre of mass energy of 2.76 TeV per nucleon. The spectra are discussed within a theoretical framework of a thermally equilibrated, hydrodynamically evolving system, which serves to explain the shape of the spectra for p$$_T$$ 6 GeV/c jet quenching is evident, but no evidence of particle species dependance in jet quenching is observed. The Λ/K$$^0$$$$_S$$ ratio shows an enhancement for 2 < p$$_T$$ < 6 GeV/c, peaking at 1.5 for the 5% most central Pb–Pb collisions compared to 0.6 for pp. This is discussed in terms of a coalescence model. It cannot be explained purely by enhanced baryon production, but must also involve a redistribution of particles within p$$_T$$. This supports the hydrodynamical picture of hadron production. A brief comparison to the results presently available in p–Pb collisions at the LHC is also given.
• Several versions

Measurement of prompt J/ ψ and beauty hadron production cross sections at mid-rapidity in pp collisions at $\sqrt{s}=7$ TeV

Journal of High Energy Physics, 2012, Vol.2012(11), pp.1-31 [Peer Reviewed Journal]

• Several versions

Underlying Event measurements in pp collisions at and 7 TeV with the ALICE experiment at the LHC

Quintana, Arian, Rinella, Gianluca, Agostinelli, Andrea, Nazeer, Ahmad, Ahmad, Arshad, Ahn, Sang, Bruno, Alessandro, Alici, Andrea, Alt, Torsten, Anson, Christopher, Tome, Anticic, Aphecetche, Laurent, Arcelli, Silvia, Arend, Andreas, Arnaldi, Roberta, Aronsson, Tomas, Arsene, Ionut, Averbeck, Ralf, Awes, Terry, Bach
Journal of High Energy Physics, Jul 2012, Vol.2012(7) [Peer Reviewed Journal]

• Several versions