[PDF] Top 20 Suppression of $\Upsilon(1S), \Upsilon(2S)$ and $\Upsilon(3S)$ production in PbPb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV

... technical and administrative staffs at CERN and at other CMS in- stitutes for their contributions to the success of the CMS ...effort. In addition, we gratefully ... See full document

... requirements at the HLT level have been applied to the L1 muon objects used for this ...distribution of minimum-bias events is compared to events selected by the double-muon trigger in ...fraction ... See full document

... 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

... colleagues in the CERN accelerator departments for the excellent performance of the LHC ...technical and administrative staff at CERN and other CMS institutes, and acknowledge ... See full document

... goal of relativistic heavy-ion experiments is to create a deconfined phase of nuclear matter, the quark gluon plasma (QGP), at extreme temperatures and energy densities, and to ... See full document

... ion collisions, scattering processes with large momentum transfer Q (of order 100 GeV or more) between the partonic constituents of the colliding nuclei occur ...result of their interactions ... See full document

... value of B( ∆η, ∆φ ) at ∆η = 0 and ∆φ = 0 (with a bin width of ...0.3 in ∆η and π/16 in ∆φ) is used to find the normalisation factor B(0, ...0). In this case, the ... See full document

... region of less than 15 cm along the beam axis. In PbPb colli- sions, the shapes of the clusters in the pixel detector have to be compatible with those expected from particles produced ... See full document

... anisotropy of emitted charged particles is an important feature of the hot, dense medium produced in heavy-ion ...One of the main goals of studying the azimuthal anisotropies is to ... See full document

... Ministry of Science and Technology, and National Natural Science Foundation of China; the Colombian Funding Agency (COLCIENCIAS); the Croatian Ministry of Science, Education and ... See full document

... Figure 2: Differential cross section of the Z bosons in pPb collisions as a function of rapidity in the fiducial region for the combined leptonic decay ...text), and using ... See full document

... calorimeters and the beam pickup ...deposits in HCAL, HLT algorithms were run on events preselected by jet triggers in the level-1 (L1) calorimeter trigger ...system. In PbPb ... See full document

... goal of relativistic heavy-ion collisions is to study the behavior of quarks and gluons under extreme conditions of pressure, density, and temperature, such as those that existed ... See full document

... In PbPb collisions at the Large Hadron Collider (LHC), the effects of the produced medium have been studied using back-to-back dijets which were observed to be significantly unbal- ... See full document

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

... added in quadrature for the final value. Two are common to both the pp and PbPb samples: the residual deviation from unity in simulation ...closure) of the JES after applying all jet ... See full document

... Vitev, and Ramona Vogt for fruitful theoreti- cal inputs on the nuclear effects involved in Z ...colleagues in the CERN accelerator departments for the excellent performance of the LHC machine ... See full document

... particles at angles ∆ > ...found in data [53, ...mechanisms in perturbative QCD are related to momentum scales through time evolu- tion of partonic interactions ...cascades in a ... See full document

... 1 of PbPb collisions at √ s NN = 2.76 TeV recorded by CMS during the 2011 heavy ion run, as well as ...1 of pp collisions at the same collision energy ... See full document