scholarly journals Measurement of WW + WZ production cross section and study of the dijet mass spectrum in the ℓν + jets final state at CDF

2010 ◽  
Author(s):  
Viviana Cavaliere
Keyword(s):  
Mass Spectrum ◽  
Cross Section ◽  
Production Cross Section ◽  
Production Cross ◽  
Final State ◽  
Dijet Mass ◽  
Wz Production

scholarly journals Search for a heavy Higgs boson decaying into two lighter Higgs bosons in the ττbb final state at 13 TeV

2021 ◽  
Vol 2021 (11) ◽  
Author(s):  
◽  
A. Tumasyan ◽  
W. Adam ◽  
J. W. Andrejkovic ◽  
T. Bergauer ◽  
...  
Keyword(s):  
Higgs Boson ◽  
Cross Section ◽  
Production Cross Section ◽  
Production Cross ◽  
Branching Fractions ◽  
Center Of Mass ◽  
Final State ◽  
Signal Process ◽  
Center Of Mass Energy ◽  
Heavy Higgs Boson

Abstract A search for a heavy Higgs boson H decaying into the observed Higgs boson h with a mass of 125 GeV and another Higgs boson hS is presented. The h and hS bosons are required to decay into a pair of tau leptons and a pair of b quarks, respectively. The search uses a sample of proton-proton collisions collected with the CMS detector at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 137 fb−1. Mass ranges of 240–3000 GeV for mH and 60–2800 GeV for $$ {m}_{{\mathrm{h}}_{\mathrm{S}}} $$ m h S are explored in the search. No signal has been observed. Model independent 95% confidence level upper limits on the product of the production cross section and the branching fractions of the signal process are set with a sensitivity ranging from 125 fb (for mH = 240 GeV) to 2.7 fb (for mH = 1000 GeV). These limits are compared to maximally allowed products of the production cross section and the branching fractions of the signal process in the next-to-minimal supersymmetric extension of the standard model.

scholarly journals Measurement of the WZ production cross section in pp collisions at s=13 TeV

2017 ◽  
Vol 766 ◽  
pp. 268-290 ◽  
Author(s):  
V. Khachatryan ◽  
A.M. Sirunyan ◽  
A. Tumasyan ◽  
W. Adam ◽  
E. Asilar ◽  
...  
Keyword(s):  
Cross Section ◽  
Production Cross Section ◽  
Production Cross ◽  
Pp Collisions ◽  
Wz Production

PROBING THE STANDARD MODEL WITH DILEPTON DECAYS OF TOP QUARK PAIRS AT CDF

2007 ◽  
Vol 22 (38) ◽  
pp. 2873-2884
Author(s):  
DANIEL WHITESON
Keyword(s):  
Standard Model ◽  
Cross Section ◽  
Top Quark ◽  
Production Cross Section ◽  
Production Cross ◽  
Fundamental Theory ◽  
Final State ◽  
Quark Pairs ◽  
The Standard Model ◽  
Selection Of

The dilepton decays of the top quark are a powerful laboratory for probing the Standard Model and searching for hints of a more fundamental theory. We present a detailed analysis of the production cross section and the kinematic qualities of top quark pair candidate events in [Formula: see text] collisions at [Formula: see text] = 1.96 TeV collected by the CDF detector which include two leptons in the final state, suggesting the decay [Formula: see text]. We describe the selection of candidate events to suppress major backgrounds and present the number of observed events over background. As a test of the top quark hypothesis, the kinematics of the events are analyzed via a measurement of M top with unprecedented precision.

scholarly journals KK Higgs produced in association with a top quark pair in the bulk RS model

2019 ◽  
Vol 79 (11) ◽  
Author(s):  
N. Manglani ◽  
A. Misra ◽  
K. Sridhar
Keyword(s):  
Higgs Boson ◽  
Large Hadron Collider ◽  
Cross Section ◽  
Top Quark ◽  
Production Cross Section ◽  
Search Strategy ◽  
Production Cross ◽  
Hadron Collider ◽  
Final State ◽  
Kaluza Klein

AbstractWe present a search strategy for the first Kaluza–Klein (KK) mode of the Higgs boson in the framework of the Randall–Sundrum (RS) model with a deformed metric. We study the production of this massive excitation in association with a $$ t {\bar{t}}$$tt¯ pair at the large hadron collider (LHC). The KK Higgs primarily decays into a boosted $$t {\bar{t}}$$tt¯ final state and we then end up with an interesting four-top final state of which two are boosted. The boosted products in the final state improve the sensitivity for the search of the KK Higgs in this channel whose production cross-section is otherwise rather small. Our results suggest that masses of the KK Higgs resonance upto about 1.2 TeV may be explorable at the highest planned luminosities of the LHC. Beyond this mass, the KK Higgs cross-section is too tiny for it to be explored at the LHC and may be possible only at a future higher energy collider.

scholarly journals Measurement of the tt‾bb‾ production cross section in the all-jet final state in pp collisions at s=13 TeV

2020 ◽  
Vol 803 ◽  
pp. 135285 ◽  
Author(s):  
A.M. Sirunyan ◽  
A. Tumasyan ◽  
W. Adam ◽  
F. Ambrogi ◽  
T. Bergauer ◽  
...  
Keyword(s):  
Cross Section ◽  
Production Cross Section ◽  
Production Cross ◽  
Pp Collisions ◽  
Final State

GENERAL CHARACTERISTICS OF Bc-MESONS: PRODUCTION MECHANISMS AND DECAYS

1991 ◽  
Vol 06 (13) ◽  
pp. 2309-2329 ◽  
Author(s):  
S.S. GERSHTEIN ◽  
A.K. LIKHODED ◽  
S.R. SLABOSPITSKY
Keyword(s):  
Mass Spectrum ◽  
Cross Section ◽  
Production Cross Section ◽  
Production Cross ◽  
Hadron Colliders ◽  
Electromagnetic Transition ◽  
Decay Channels ◽  
Real Possibility ◽  
Neutrino Interactions ◽  
Production Mechanisms

Using Martin’s potential, independently of b- and c-quark flavours, we calculate the mass spectrum of [Formula: see text]-mesons and widths of electromagnetic transition between them. We obtain the estimates of the production cross-section at e+e− colliders, in hadronic and neutrino interactions. A real possibility of observing Bc-mesons at LEP (up to 500 Bc per 106 Z0) and at hadron colliders [Formula: see text] has been pointed out. The importance of observing the annihilation decay channels of Bc-mesons—Bc→τντ( Br (Bc→τντ)=1.5–2%) and Bc→ϕDs, DK, etc.—has been emphasized.

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