prikaz prve stranice dokumenta Measurement of the Cross section for associated production of the Higgs boson and an electroweak boson in final states with two b quarks and two leptons in proton proton collisions at the Large Hadron Collider
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disertacija
Measurement of the Cross section for associated production of the Higgs boson and an electroweak boson in final states with two b quarks and two leptons in proton proton collisions at the Large Hadron Collider
Zagreb: Sveučilište u Zagrebu, Prirodoslovno-matematički fakultet, 2023. urn:nbn:hr:217:399982
Mishra, Saswat
Sveučilište u Zagrebu
Prirodoslovno-matematički fakultet
Fizički odsjek

Institucijski repozitorij: Repozitorij Prirodoslovno-matematičkog fakulteta

Citirajte ovaj rad

Mishra, S. (2023). Measurement of the Cross section for associated production of the Higgs boson and an electroweak boson in final states with two b quarks and two leptons in proton proton collisions at the Large Hadron Collider (Disertacija). Zagreb: Sveučilište u Zagrebu, Prirodoslovno-matematički fakultet. Preuzeto s https://urn.nsk.hr/urn:nbn:hr:217:399982

Mishra, Saswat. "Measurement of the Cross section for associated production of the Higgs boson and an electroweak boson in final states with two b quarks and two leptons in proton proton collisions at the Large Hadron Collider." Disertacija, Sveučilište u Zagrebu, Prirodoslovno-matematički fakultet, 2023. https://urn.nsk.hr/urn:nbn:hr:217:399982

Mishra, Saswat. "Measurement of the Cross section for associated production of the Higgs boson and an electroweak boson in final states with two b quarks and two leptons in proton proton collisions at the Large Hadron Collider." Disertacija, Sveučilište u Zagrebu, Prirodoslovno-matematički fakultet, 2023. https://urn.nsk.hr/urn:nbn:hr:217:399982

Mishra, S. (2023). 'Measurement of the Cross section for associated production of the Higgs boson and an electroweak boson in final states with two b quarks and two leptons in proton proton collisions at the Large Hadron Collider', Disertacija, Sveučilište u Zagrebu, Prirodoslovno-matematički fakultet, citirano: 01.01.2025., https://urn.nsk.hr/urn:nbn:hr:217:399982

Mishra S. Measurement of the Cross section for associated production of the Higgs boson and an electroweak boson in final states with two b quarks and two leptons in proton proton collisions at the Large Hadron Collider [Disertacija]. Zagreb: Sveučilište u Zagrebu, Prirodoslovno-matematički fakultet; 2023 [pristupljeno 01.01.2025.] Dostupno na: https://urn.nsk.hr/urn:nbn:hr:217:399982

S. Mishra, "Measurement of the Cross section for associated production of the Higgs boson and an electroweak boson in final states with two b quarks and two leptons in proton proton collisions at the Large Hadron Collider", Disertacija, Sveučilište u Zagrebu, Prirodoslovno-matematički fakultet, Zagreb, 2023. Dostupno na: https://urn.nsk.hr/urn:nbn:hr:217:399982

Za citiranje koristite ovu mrežnu adresu: https://urn.nsk.hr/urn:nbn:hr:217:399982
Podaci o radu
NaslovMeasurement of the Cross section for associated production of the Higgs boson and an electroweak boson in final states with two b quarks and two leptons in proton proton collisions at the Large Hadron Collider
Naslov (hrvatski)Mjerenje udarnog presjeka za zajedničku tvorbu Higgsovog bozona i elektroslabog bozona u konačnim stanjima s dva b kvarka i dva leptona u proton proton sudarima na Velikom hadronskom sudarivaču
AutorSaswat Mishra
MentorDinko Ferenček (mentor)
Član povjerenstvaNikola Poljak (predsjednik povjerenstva)
Član povjerenstvaDinko Ferenček (član povjerenstva)
Član povjerenstvaVuko Brigljević (član povjerenstva)
Ustanova koja je dodijelila
akademski / stručni stupanj		Sveučilište u Zagrebu
Prirodoslovno-matematički fakultet
(Fizički odsjek)
Zagreb
Datum i država obrane2023-03-21, Hrvatska
Znanstveno / umjetničko
područje, polje i grana		PRIRODNE ZNANOSTI
Fizika
Univerzalna decimalna klasifikacija
(UDC)		53 - Fizika
Sažetak
This thesis summarizes the analysis in which we measure the cross-section for the production of the standard model Higss boson of 125 GeV in association with an electroweak boson (W or Z). The analysis is performed in the final state where the Higgs boson decays into a pair of b quarks and the electroweak boson decays lectonically resulting in three channels based on the number of charged leptons in the final state (0, 1 or 2 leptons). The analysis uses data recorded by the CMS experiment from proton-proton collisions at √s= 13 TeV in the LHC during the full Run 2 data taking period (2016-2018). The recorded data corresponds to an integrated luminosity of 138 fb^−1. The analysis searches for 2 b-jets produced from b-quarks originating from the Higgs boson along with lepton candidates decaying from the vector boson. The mass of the Higgs boson is reconstructed from the four momenta of the b-jets which are identified using b-tagging algorithms. To account for events with a Lorentz boosted Higgs boson, a single large cone jet is reconstructed which consists of the two b-jets merged together due to the boost. Taking this into account, separate analysis called the boosted analysis is performed along with the nominal resolved analysis to improve sensitivity in high p_T phase space. Both resolved and boosted analysis are combined together in the final fit to enhance precision of the measurement. To reduce the dependency on theoretical uncertainties this measurement is performed in the simplified template cross-section (STXS) scheme. This also allows for straightforward comparison of theoretical models using such measurements. Under this scheme, the cross section measurement is done in regions delineated by type of vector boson (W or Z), vector boson transverse momentum (p_T), and the presence of additional jets.
Sažetak (hrvatski)
Budući da se udarni presjeci mjere u shemi STXS, konačni skup događaja u kanalu i u svakoj regiji (signal ili kontrola) dalje se dijele prema shemi predloška STXS. Prilagodba maksimalne vjerodostojnosti izvodi se istovremeno u signalnim i kontrolnim područjima za svako STXS područje kako bi se dobio modifikator jačine signala (μ) koji označava omjer promatranog broja VHbb događaja u odnosu na onaj koji se očekuje u SM-u. μ=1 predstavlja udarni presjek u skladu s SM-om.
Ključne riječi
Ključne riječi (hrvatski)
Jezikengleski
URN:NBNurn:nbn:hr:217:399982
Datum promocije2023
ProjektŠifra: IP-2016-06-3321
Naziv: Sto dvadeset i pet milijuna piksela za otkriće vezanja Higgsovog bozona na fermione i novih čestica na Velikom hadronskom sudarivaču
Kratica: HIGGS125
Voditelj: Vuko Brigljević
Pravna nadležnost: Hrvatska
Financijer: HRZZ
Linija financiranja: IP
Studijski programNaziv: Fizika
Vrsta studija: sveučilišni
Stupanj studija: poslijediplomski doktorski
Akademski / stručni naziv: doktor/doktorica znanosti, područje prirodnih znanosti, polje fizika (dr. sc.)
Vrsta resursaTekst
Opseg103 str.
Način izrade datotekeIzvorno digitalna
Prava pristupaOtvoreni pristup
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Datum i vrijeme pohrane2023-04-20 09:34:21