Conveners
pp processes
- Qun Wang (DESY)
pp processes
- Qun Wang (DESY)
pp processes
- Hannes Jung (DESY)
pp processes
- Ami Rostomyan (DESY)
The production of lepton pairs at low invariant mass and finite transverse momentum resolves QCD dynamics at the boundary between the perturbative and non-perturbative domains. We investigate the impact of NNLO QCD corrections for the lepton pair transverse momentum distributions at energies corresponding to the BNL RHIC collider and to fixed-target experiments. Satisfactory perturbative...
We present a measurement of azimuthal correlations in Z+jet events measured by CMS at sqrt{s}=13 TeV. The measurements are compared to predictions at NLO using Pythia8 parton shower and hardonization as well as Parton Branching TMDs and TMD shower.
Predictions are given for the back-to-back configuration and a comparison of the prediction with measurements of multi-jets in the same kinematic...
We consider the production of $Z$ bosons associated with a heavy (charm and beauty) jet at the LHC energies using two scenarios based on the transverse momentum dependent (TMD) parton densities in the proton. First of them employs the Catani-Ciafaloni-Fiorani-Marchesini gluon evolution and is implemented into the Monte-Carlo event generator PEGASUS. The second scheme is based on the Parton...
We investigate the TMD evolution contribution to jet production. Calculations of jet production at the LHC using the TMD merging method are presented. The predictions show very good agreement with the data over a wide kinematic range. Lower matching cone radii are preferred by jet events than Z + jets events.
We present a comparison of predictions obtained with PB TMDs (MG5-aMC+CA3(jj)NLO) with measurements in the back-to-back region.
The presentation is a result of the PB-TMD Monte Carlo school.
The speaker will be selected from the participants of the PB-TMD school.
In this talk, we will present our results on the soft gluon resummation in the dijet production processes where the total transverse momentum of the dijet is much smaller than the jet momentum.
I discuss the importance of pT resummation in fiducial cross sections at the LHC, using gluon-fusion Higgs production in the diphoton decay channel with fiducial cuts as an example. In particular, I discuss the treatment of fiducial power corrections that make the total cross section sensitive to small-pT resummation effects, and thereby enhance the N3LO correction. Integrating the resummed pT...
At the LHC, diphoton production constitutes the main background of Higgs production in the diphoton decay and of many new physics models predicting large-mass diphoton resonances. Underestimated theoretical uncertainties and large perturbative corrections have been a long-standing issue over the years with various suggestions. Especially the transverse momentum spectrum has lead to various...
Soft drop jet mass is an attractive candidate for precision measurements such as the top mass $m_t$ and the strong coupling constant $\alpha_s$, as it can be perturbatively calculable to high accuracy besides being more robust against nonperturbative and underlying event corrections. In this talk I will describe the prospects for the top mass and $\alpha_s$-determination at the LHC using soft...
We investigate the role of parton fragmentation processes for associated gauge boson (Z or W) and J/psi production at the LHC conditions. We focused on new partonic subprocesses, namely, the charmed or strange quark excitation followed by the charmed quark fragmentation c -> J/psi + c. Additionaly we take into account the effects of multiple quark and gluon radiation in the initial and final...
We present the resummed predictions for inclusive cross section for Drell-Yan (DY) production up to next-to-next-to leading logarithmic ($\rm \overline{ NNLL}$) accuracy taking into account both soft virtual (SV) and next-to SV (NSV) threshold logarithms. We restrict ourselves to resummed contributions only from quark anti-quark ($q \bar q$) initiated channels. The resummation is...
