The preparation of the CERN Ion Injector Chain for an LHC Oxygen Run is not straight forward because the Complex has been designed to deliver Lead beams with a very low radiological impact. With Oxygen beams, initial simulations indicate that we cross the safety borders in terms of personnel and equipment protection. Therefore, special measurements need to be put in place. However, there is...
This talk discusses scenarios for a short oxygen run in the LHC in terms of needed commissioning, machine constraints, beam parameters, and estimated luminosity performance. Both O-O and p-O collisions are discussed.
I will cover eccentriciteis in collisions with 16O and also 12C, with emphasis on sensitivity to nuclear correlations, in particular, alpha clusterization. Realistic nuclear distribution will be considered and prospects of experimental signatures discussed.
Small collision systems, such as pO and OO, can provide valuable information about the collisions' early-stage dynamics. They also present high sensitivity to initial state fluctuations at multiple length scales. In this talk, we employ the hybrid IP-Glasma + hydrodynamics + hadronic transport approach to simulate the pO and OO collisions' bulk dynamics at the LHC energies. All the model...
We extend the computed EKRT initial conditions from 5 TeV Pb+Pb collisions to O+O collisions at the same collision energy, and compute the subsequent fluid dynamical evolution. We show preliminary predictions for multiplicity and flow observables, and compare the results to the peripheral Pb+Pb collisions at the same collision energy and multiplicity.
We use the Trajectum heavy ion code to generate predictions for OO observables, where we use model parameters which are fitted to PbPb data. We subsequently use the OO predictions as mock data for a Bayesian analysis which includes both the PbPb and OO systems, which allows us to estimate the impact of the future addition of OO data on the quality of Bayesian analyses.
The quark-gluon plasma (QGP) formation in small colliding systems is implied from various experimental data at LHC and RHIC. Focusing on one of them, the particle yield ratio, we investigate a possibility of the QGP formation through the dynamical core{corona initialization (DCCI) model. We extend the conventional core{corona picture introducing it into the dynamical initialization framework...
The global analyses of nuclear parton distribution functions (nPDFs) are going through a phase of rapid development, driven mainly by new constraints from the CERN LHC proton–lead program, and attracting also new groups to join the field. In this talk, I will review the current status of nPDF global analyses. I will concentrate on the opportunities with lighter-ion runs at the LHC and in...
Results on pA collisions have demonstrated the potential of light systems in achieving the most surprising discoveries. The presence of fluid-like behaviour and their implications motivate further the determination of the necessary conditions that mark the onset of the QGP phase. Intermediate systems, like pO and OO, will be invaluable to a successful unified particle production description...
Under the assumption that a quark-gluon plasma droplet is produced and its evolution can be described by hydrodynamics in p + A collisions, $\gamma$-triggered hadron spectra \cite{Wang:1996yh, Zhang:2009rn} are studied within a next-to-leading-order perturbative QCD parton model with the medium-modified parton fragmentation functions. The initial conditions and space-time evolution of the...
Oxygen on oxygen, proton oxygen and photon oxygen collisions at the LHC offer rich physics opportunities both in themselves and as compliments to the current lead based heavy ion program. The extensive rapidity coverage, excellent event reconstruction, and flexible trigger system of CMS make it an ideal detector for exploiting such opportunities. This talk will review potential oxygen...
The LHCb experiment has the unique possibility, among the LHC
experiments, to be operated in fixed target mode using its internal gas
target. After reviewing the results achieved so far in the fixed target
configuration, we will discuss prospects for the incoming run, where,
thanks to the upgraded target system, a significant improvement in
luminosity and a wider choice of the target gas...
The aim of the LHC forward (LHCf) experiment is to provide critical data to test and tune hadronic interaction models used for very high energy cosmic-ay interactions. LHCf measures neutral particles, photons, neutrinos and pi0s, at very forward region of LHC collisions, and these energetic particles significantly contribute air shower development induced by cosmic-rays. LHCf had several...
A proton-oxygen run at the LHC would be a unique opportunity to reproduce the collision of a cosmic ray with a light nucleus of the atmosphere. The LHCf experiment will have the possibility to perform direct measurements of the very-forward neutral particle production and the nuclear modification factor without the need of an interpolation of the results in proton-proton and proton-lead...
