QCD predictions for simultaneously produced Higgs and vector bosons at s=13, 14, 27 and 100 TeV with a comprehensive study of systematic uncertainty and charge asymmetry

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dc.authoridOgul, Hasan/0000-0002-5121-2893
dc.authoridTiras, Emrah/0000-0002-5628-7464
dc.contributor.authorDilsiz, Kamuran
dc.contributor.authorTiras, Emrah
dc.contributor.authorYilmaz, Meryem
dc.contributor.authorOgul, Hasan
dc.date.accessioned2025-03-23T19:31:04Z
dc.date.available2025-03-23T19:31:04Z
dc.date.issued2025
dc.departmentSinop Üniversitesi
dc.description.abstractA comprehensive study of high-order QCD cross-section for the Higgs boson that is simultaneously produced with a vector boson is presented at s = 13, 14, 27 and 100 TeV in this manuscript. The simultaneous Higgs production with a vector boson facilitates the investigation of the Higgs signal. In the calculations, three different branching states of the Higgs (tau-tau+, bb, gamma gamma) and vector bosons [W +/-(e +/-nu(nu)),Z(e-e+)] were taken into account. Here, leading order (LO), next-to-leading order (NLO), and next-to-NLO (NNLO) QCD cross-sections were calculated for these branching states. A simulation framework was built for the calculations at the TRUBA high-performance grid computing center. Then, the threshold values (selection cuts) close to the values used by the CMS and ATLAS Collaborations were selected and used on several parameters such as invariant mass, transverse momentum ( pT), pseudorapidity (eta), etc. In addition, NNPDF3.1 parton distribution functions (PDF) were used during the calculation. The results showed that the numerical value of the QCD prediction increases at NLO and NNLO as compared to the LO predictions. In addition to the higher-orders, the cross-section value increases as the center-of-mass energy increases. In addition to the QCD predictions, PDF, scale, and aS uncertainties of theQCD-predictions were also calculated to test the reliability of the highorder QCDs. The results showed that total and scale uncertainties decrease as the QCD order increases. In addition, it was found that LO total and scale uncertainties increase significantly as the center-of-mass energy increases, while NLO and NNLO scale and total uncertainties remain almost constant or show a negligible increase as the center-of-mass energy increases. This indicates that high-order QCDs not only provide more accurate results by the addition of extra partonic diagrams but also provide lower uncertainties in the relevant production channels. Furthermore, the required data that provides the exact statistics for physicsmeasurements of simultaneously produced Higgs and vector bosons as the data at 13 TeV were predicted at s = 14, 27, and 100 TeV. As a result, we found that the same statistics for accurate physics measurements can be obtained at s = 14, 27, and 100 TeV with approximately 1.1, 2.0, and 6.5 times less data than the amount of data at s = 13 TeV, respectively. In the last section of this study, Wboson charge asymmetry was computed at NNLO QCD. The lowest charge asymmetry between W + and W - was obtained at the WH(tau-tau+) decay channel and the highest charge asymmetry results were obtained at the WH(bb) decay channel.
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) [1002-A, 122F270]; Turkish Academy of Sciences (TUBA) under the Outstanding Young Scientists Awards Program (GEBIP) grant
dc.description.sponsorshipThis study was funded by the Scientific and Technological Research Council of Turkey (TUBITAK) 1002-A Grant No 122F270. The numerical calculations reported in this paper were fully/partially performed at TUBITAK ULAKBIM, High Performance and Grid Computing Center (TRUBA resources). Dr. Emrah Tiras is thankful for the support of the Turkish Academy of Sciences (TUBA) under the Outstanding Young Scientists Awards Program (GEBIP) grant.
dc.identifier.doi10.1140/epjc/s10052-025-13823-9
dc.identifier.issn1434-6044
dc.identifier.issn1434-6052
dc.identifier.issue1
dc.identifier.scopus2-s2.0-85217616132
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1140/epjc/s10052-025-13823-9
dc.identifier.urihttps://hdl.handle.net/11486/5218
dc.identifier.volume85
dc.identifier.wosWOS:001407380200001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofEuropean Physical Journal C
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250323
dc.subjectPp Collisions
dc.subjectRoot-S=13 Tev
dc.subjectStrahlung
dc.subjectAsterisk
dc.subjectFusion
dc.subjectPair
dc.titleQCD predictions for simultaneously produced Higgs and vector bosons at s=13, 14, 27 and 100 TeV with a comprehensive study of systematic uncertainty and charge asymmetry
dc.typeArticle

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