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001-es BibID:	BIBFORM118261
035-os BibID:	(cikkazonosító)571 (WoS)001062398300004 (Scopus)85182720986
Első szerző:	CMS Collaboration
Cím:	Search for light Higgs bosons from supersymmetric cascade decays in pp collisions at ?s = 13 TeV / Tumasyan, A., Adam, W., Andrejkovic, J. W., Raics P., Ujvari B., Trocsanyi Z. L., CMS Collaboration
Dátum:	2023
ISSN:	1434-6052
Megjegyzések:	A search is reported for pairs of light Higgs bosons (H-1) produced in supersymmetric cascade decays in final states with small missing transverse momentum. A data set of LHC pp collisions collected with the CMS detector at root s = 13 TeV and corresponding to an integrated luminosity of 138 fb(-1) is used. The search targets events where both H-1 bosons decay into b (b) over bar pairs that are reconstructed as large-radius jets using substructure techniques. No evidence is found for an excess of events beyond the background expectations of the standard model (SM). Results from the search are interpreted in the next-to-minimal supersymmetric extension of the SM, where a "singlino" of small mass leads to squark and gluino cascade decays that can predominantly end in a highly Lorentz-boosted singlet-like H-1 and a singlino-like neutralino of small transversemomentum. Upper limits are set on the product of the squark or gluino pair production cross section and the square of the b (b) over bar branching fraction of the H1 in a benchmark model containing almost mass-degenerate gluinos and light-flavour squarks. Under the assumption of an SM-like H-1 -> b (b) over bar branching fraction, H-1 bosons with masses in the range 40-120 GeVarising from the decays of squarks or gluinos with a mass of 1200-2500 GeV are excluded at 95% confidence level.
Tárgyszavak:	Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Germanium alloys Germanium compounds Supersymmetry Tellurium compounds Branching fractions Cascade decay CMS detectors Data set Final state Gluinos Higgs boson Squarks The standard model Transverse momenta
Megjelenés:	The European Physical Journal C. - 83 : 7 (2023), p. 1-27. -
További szerzők:	Tumasyan, Armen Adam, Waldemar Andrejkovic, J.W. Raics Péter (1944-) (fizikus) Ujvári Balázs (1977-) (fizikus) Trócsányi Zoltán (1961-) (fizikus)
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM115963
035-os BibID:	(Scopus)85121572316 (WoS)000732955700003
Első szerző:	CMS Collaboration
Cím:	Search for a heavy resonance decaying to a top quark and a W boson at ?s = 13 TeV in the fully hadronic final state / Sirunyan, A. M., Tumasyan, A., Adam, W., Trocsanyi, Z. L., Ujvári, B., Raics, P., CMS Collaboration
Dátum:	2021
ISSN:	1126-6708 1029-8479
Megjegyzések:	A search for a heavy resonance decaying to a top quark and a W boson in the fully hadronic final state is presented. The analysis is performed using data from proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 137 fb?1 recorded by the CMS experiment at the LHC. The search is focused on heavy resonances, where the decay products of each top quark or W boson are expected to be reconstructed as a single, large-radius jet with a distinct substructure. The production of an excited bottom quark, b, is used as a benchmark when setting limits on the cross section for a heavy resonance decaying to a top quark and a W boson. The hypotheses of b quarks with left-handed, right-handed, and vector-like chiralities are excluded at 95% confidence level for masses below 2.6, 2.8, and 3.1 TeV, respectively. These are the most stringent limits on the b* quark mass to date, extending the previous best limits by almost a factor of two. [Figure not available: see fulltext.] ? 2021, The Author(s).
Tárgyszavak:	Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Beyond Standard Model Hadron-Hadron scattering (experiments) Heavy quark production
Megjelenés:	Journal of High Energy Physics. - 2021 : 12 (2021), p. 1-46. -
További szerzők:	Sirunyan, A. M. (fizikus) Tumasyan, Armen Adam, Waldemar Trócsányi Zoltán (1961-) (fizikus) Ujvári Balázs (1977-) (fizikus) Raics Péter (1944-) (fizikus)
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