[PDF] Top 20 Measurement of jet fragmentation into charged particles in $pp$ and PbPb collisions at $\sqrt{s_{NN}}=2.76$ TeV

... FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES (Croatia); RPF (Cyprus); MoER, SF0690030s09 and ERDF (Estonia); Academy of Finland, ... See full document

... reconstruction of the primary event vertex and the trajectories of charged particles in PbPb collisions is based on signals in the silicon pixel and ... See full document

... type of parton that initiates the jet is difficult to determine ...the fragmentation of bottom ...presence of a soft lepton or a displaced vertex inside the ...pursued in the CMS ... See full document

... coverage and high-resolution track- ing for the reconstruction of energetic jets and charged ...consist of a lead tungstate crystal electromagnetic calorimeter (ECAL) and a ... See full document

... fragmentation of a final-state parton into a photon. Prompt photons from (i) and (ii) are called “direct”; those from (iii) are called ...test of perturbative quantum chromodynamics ... See full document

... – in the most central collisions the UE exceeds the signal by more than a factor of ten – the correction for the presence of fake tracks is small, typically below ...UE and ... See full document

... detector at the LHC. These measurements provide insight into the jet quenching process in the quark–gluon plasma created in the aftermath of ultra-relativistic collisions ... See full document

... hot and dense matter produced in heavy-ion (AA) collisions can be studied in a variety of ...(pp) collisions as well as to collisions of protons or deuterons ... See full document

... energies of calorimeter cells within the tower ...layer- and η- dependent underlying event (UE) energy density while excluding actual jets from that ...included in the reconstructed jet. The ... See full document

... 13 TeV run of the LHC, this method could be extended to constrain the b quark fragmentation, using the properties of the secondary vertices or charmed mesons, while measuring the top quark ... See full document

... modification in the distribution of the associated particles at small angles from the leading ...found in the distribution of particles opposite in azimuth to the ... See full document

... uncertainty in the fragmentation function due to background sub- ...requirement of a minimum reconstructed jet energy, jets sit- ting on top of an upward background fluctuation are more ... See full document

... [49]. In this analysis, the azimuthal anisotropy correlations are determined based on the charged particles reconstructed from the tracks in the silicon ...separation in pseudorapidity ... See full document

... asymmetry in p T between the leading and subleading jets than in pp ...angular, and p T spectra of the radiation balancing this asymmetry are charac- terized using several ... See full document

... instead of a single ultra-central collision, more spectator neutrons will be released, resulting in a large signal in the ...single-collision PbPb events, the correlation of en- ergy ... See full document

... point. In the analysis at least two reconstructed tracks were required to form a ver- tex within ± 25 cm of the nominal interaction point along the beam line and within a radius of ... See full document

... predominantly in the region above 2 ...< 2 MeV/cm. By requiring a number of such low dE/dx measurements, standard model backgrounds can be suppressed while most of the signal events ... See full document

... ment of the medium response), which incorporates medium-induced interactions while the partons propagate through the QGP [39, 60, ...The measurement is also compared with a soft-collinear effective theory ... See full document

... selection of hadronic collisions is applied by requiring a coincidence of at least one HF calorimeter tower with more than 3 GeV of total energy on the positive and negative ... See full document

... ”jet-triggered”, and are used to study the jet-related particle yields. While jet-triggered samples are used in pp collisions to correct for the limited jet ... See full document