1,720,974 research outputs found
Scale factor in double parton collisions and parton densities in transverse space
No full textPHYS. REV.
b anti-b b anti-b production in proton-proton and proton-nucleus collisions at the CERN LHC
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FRACTIONAL MOMENTUM CORRELATIONS IN MULTIPLE PRODUCTION OF W BOSONS AND OF B ANTI-B PAIRS IN HIGH ENERGY PP COLLISIONS
No full textAbstract: Multiple parton collisions will represent a rather common feature in pp collisions at the LHC, where regimes with very large momentum transfer may be studied and events rare in lower energy accelerators might occur with a significant rate. A reason of interest in large p(t) regimes is that, differently from low p(t), evolution will induce correlations in x in the multiparton structure functions. We have estimated the cross section of multiple production of W bosons with equal sign, where the correlations in x induced by evolution are particularly relevant, and the cross section of b (b) over barb (b) over bar production, where the effects of evolution are much smaller. Our result is that, in the case of multiple production of W bosons, the terms with correlations may represent a correction of the order of 40% of the cross sections, for pp collisions at 1 TeV c.m. energy, and a correction of the order of 20% at 14 TeV. In the case of b (b) over bar pairs the correction terms
A double parton scattering background to Higgs boson production at the LHC
No full textThe experimental capability of recognizing the presence of b quarks in complex hadronic final states has addressed the attention towards final states with b\bar{b} pairs for observing the production of the Higgs boson at the LHC, in the intermediate Higgs mass range.We point out that double parton scattering processes are going to represent a sizeable background to the process
Thresholds, long delays and stability from generalized allosteric effect in protein networks
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