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Academic literature on the topic 'Fisica dei Collisori'
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Dissertations / Theses on the topic "Fisica dei Collisori"
LIMATOLA, GIOVANNI. "Infrared Linear Renormalons in Collider Processes." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2023. https://hdl.handle.net/10281/402371.
Full textUnderstanding leading non-perturbative corrections, showing up as linear power corrections, is crucial to properly describe observables both at lepton and hadron colliders. Using an abelian model, we examine these effects for the transverse momentum distribution of a $Z$ boson produced in association with a jet in hadronic collisions, that is one of the cleanest LHC observables, where the presence of leading non-perturbative corrections would spoil the chance to reach the current experimental accuracy, even considering higher orders in the perturbative expansion. As we did not find any such corrections exploiting semi-numerical techniques, we looked for a rigorous field-theoretical derivation of them, and explain under which circumstances linear power corrections can arise. We apply our theoretical understanding to the study of event-shape observables in $e^+e^-$ annihilation, focusing in particular on $C$-parameter and thrust, and obtaining for them an estimate of non-perturbative corrections in the three-jet region for the first time. We also derived a factorisation formula for non-perturbative corrections, with a term describing the change of the shape variable when a soft parton is emitted, and a constant universal factor, proportional to the so-called Milan factor. These observables are routinely used to extract the strong coupling constant $\alpha_s$ and they constitute an environment to test perturbative QCD. It is then extremely important to obtain reliable estimates of non-perturbative corrections in the whole kinematic region relevant for the $\alpha_s$ fits.
Bartolucci, Alberto. "Studio del bosone di Higgs con una simulazione veloce del rivelatore CMS in collisioni p-p a sqrt(s) = 14 TeV." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/5618/.
Full textCalabrese, Roxana. "Misura del flusso triangolare v3 di adroni identificati in collisioni Pb-Pb a √s_NN = 2.76 TeV con l'esperimento ALICE a LHC." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/9580/.
Full textZamagni, Nicola. "Progettazione e sviluppo di un simulatore fisico 3D: algoritmi numerici per l’integrazione delle leggi del moto e la risoluzione delle collisioni." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2020.
Find full textCavalli, Noemi. "Misura della massa del quark top usando eventi t\bar{t} selezionati da CMS a 13 TeV nel regime all-jet boosted." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/14612/.
Full textMARTINI, MATTEO. "Measurement of the Ks->gg branching ratio using a pure Ks beam in the KLOE detector." Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2008. http://hdl.handle.net/2108/433.
Full textWe have searched for the decay Ks->gg in a sample of 2x10^9 phi->KsKl decays collected at Dafne, with an integrated luminosity of 1.9fb^-1. Ks are tagged by the Kl interaction in the calorimeter. Two prompt photons must also be detected. Kinematic constraints reduce the initial 6x10^5 events to 2740 candidates, from which a signal of 711+/-35 events is extracted. By normalizing to the Ks->2p0 decays counted in the same sample, we measure: BR(Ks->gg)=(2.26+/-0.12+/-0.06)x10^-6, in agreement with O(p^4) ChPT prediction.