Gian Michele Innocenti
(Massachusetts Inst. of Technology (US))
04/03/2015, 17:02
Austin Alan Baty
(Massachusetts Inst. of Technology (US))
04/03/2015, 17:03
The energy loss of partons transversing a hot, dense medium is studied by comparing the measured momentum flow of PbPb and pp collisions containing high momentum dijets. The PbPb and pp data used has integrated luminosities of 150 $\mu b^{-1}$ and 5.3 $pb^{-1}$, respectively, and was gathered by the CMS detector at $\sqrt{s_{NN}} $= 2.76 TeV. Dijet events are selected by using an anti-kt jet...
Marco Leoncino
(University of Turin and INFN (IT))
04/03/2015, 17:25
The ALICE Collaboration has studied the inclusive $\psi(\mathrm{2S})$ production in p-Pb collisions at the CERN LHC. The $\psi(\mathrm{2S})$ is detected through its decay to a muon pair, using the forward Muon Spectrometer, which covers the pseudo-rapidity range $-4<\eta<-2.5$. $\psi(\mathrm{2S})$ results are compared to the J/$\psi$ ones by means of the production cross section ratio as a...
Javier Martin Blanco
(Laboratoire de Physique Subatomique et des Technologies Associe)
04/03/2015, 17:26
Measurements of particle production as a function of the event multiplicity provide a very useful tool to study the presence of collective-like effects in small size systems compared to Pb-Pb, as is the case of pp and p-Pb collisions.
We report the measurement of the inclusive $J/\psi$ yield and transverse momentum as a function of charged particle pseudo rapidity density...
Haitao Zhang
(Central China Normal University CCNU (CN))
04/03/2015, 17:27
Identified hadron spectra are considered to be sensitive to transport properties of strongly interacting matter produced in high-energy nucleus-nucleus collisions.
We present measurements of $\pi^0$ and $\eta$ mesons at mid-rapidity in a wide transverse momentum range in pp and Pb-Pb collisions at LHC energies measured with the ALICE detector. The mesons are reconstructed via their...
Cristina Bedda
(Universita e INFN Torino (IT))
04/03/2015, 17:28
Heavy quarks (charm and beauty) can be used to study the properties of the strongly interacting matter that is created in central Pb-Pb collisions at ultrarelativistic energies. They are produced in parton scattering processes with high momentum transfer in the initial stages of the collisions. Therefore, the heavy quarks pass through all the phases of the system evolution losing energy via...
Rudiger Haake
(Westfaelische Wilhelms-Universitaet Muenster (DE))
04/03/2015, 17:29
Highly energetic jets are sensitive probes for the kinematics and the topology of nuclear collisions. Jets are collimated sprays of charged and neutral particles, which are produced in the fragmentation of hard scattered partons in an early stage of the collision. The measurement of jet spectra in p--Pb collisions provides an important way of quantifying the effects of cold nuclear matter in...
48.
Production of strange particles in charged jets in p–Pb and Pb–Pb collisions measured with ALICE
Alice Zimmermann
(Ruprecht-Karls-Universitaet Heidelberg (DE)),
Vit Kucera
(Acad. of Sciences of the Czech Rep. (CZ))
04/03/2015, 17:30
At intermediate transverse momenta (2 GeV/c < pT < 5 GeV/c), a strong increase of the baryon-to-meson ratio is observed for inclusive light particles produced in heavy-ion collisions (Pb–Pb) and proton–nucleus collisions (p–Pb) when compared to the ratio measured in proton–proton collisions. Production by fragmentation in vacuum cannot explain this phenomenon. Other hadronisation mechanisms,...
Manuel Colocci
(Universita e INFN, Bologna (IT))
04/03/2015, 17:31
The ALICE detector was designed to study heavy-ion collisions at the LHC energies. During Run-I of Pb--Pb collisions, ALICE collected data at √(𝑠_NN) = 2.76 TeV. At this energy, almost equal amounts of matter and antimatter are produced in the central rapidity region. This is also observed for (hyper)nuclei and anti-(hyper)nuclei, which are measured with nearly identical abundances. Thanks to...
Nicolo Jacazio
(Universita e INFN Torino (IT))
04/03/2015, 17:32
Abstract: The ALICE detector with its excellent particle identification (PID) and transverse momentum (pT) coverage is an ideal tool to study the production of identified particles at mid-rapidity over a wide range of pT. This poster contains a summary of the results on pT spectra of π, K and p at low pT. Studies aiming at searches for collective phenomena in smaller systems, such as pp and...
Tuva Ora Herenui Richert
(Lund University (SE))
04/03/2015, 17:33
The ALICE experiment has unique capabilities for particle identification at midrapidity over a wide range of transverse momentum (pT), making it an ideal tool for comprehensive measurements of hadrons such as charged pions, kaons, and protons as well as Lambda, K0s and phi. The transverse momentum distributions of these particles as measured in p--Pb and Pb--Pb collisions will be presented and...
