scholarly journals Excited Neutrino Search Potential of the FCC-Based Electron-Hadron Colliders

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
A. Caliskan
Keyword(s):  
Cross Sections ◽  
Production Cross ◽  
Center Of Mass ◽  
Branching Ratios ◽  
Hadron Colliders ◽  
Production Potential ◽  
Decay Channels ◽  
Decay Widths

The production potential of the excited neutrinos at the FCC-based electron-hadron colliders, namely, the ERL60⊗FCC with s=3.46 TeV, the ILC⊗FCC with s=10 TeV, and the PWFA-LC⊗FCC with s=31.6 TeV, has been analyzed. The branching ratios of the excited neutrinos have been calculated for the different decay channels and shown that the dominant channel is ν⋆→eW+. We have calculated the production cross sections with the process of ep→ν⋆q→eW+q and the decay widths of the excited neutrinos with the process of ν⋆→eW+. The signals and corresponding backgrounds are studied in detail to obtain accessible mass limits. It is shown that the discovery limits obtained on the mass of the excited neutrino are 2452 GeV for Lint=100 fb-1, 5635 GeV for Lint=10 fb-1 (6460 GeV for Lint=100 fb-1), and 10200 GeV for Lint=1 fb-1 (13960 GeV for Lint=10 fb-1), for the center-of-mass energies of 3.46, 10, and 31.6 TeV, respectively.

scholarly journals Excited Muon Searches at the FCC-Based Muon-Hadron Colliders

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
A. Caliskan ◽  
S. O. Kara ◽  
A. Ozansoy
Keyword(s):  
Transverse Momentum ◽  
Cross Sections ◽  
Production Cross ◽  
Muon Decay ◽  
Hadron Colliders ◽  
Final State ◽  
Decay Widths ◽  
Muon Production ◽  
Pseudorapidity Distributions ◽  
Excited Muons

We study the excited muon production at the FCC-based muon-hadron colliders. We give the excited muon decay widths and production cross-sections. We deal with the μp→μ⋆q→μγq process and plot the transverse momentum and normalized pseudorapidity distributions of final state particles to define the kinematical cuts best suited for discovery. By using these cuts, we get the mass limits for excited muons. It is shown that the discovery limits obtained on the mass of μ⋆ are 2.2, 5.8, and 7.5 TeV for muon energies of 63, 750, and 1500 GeV, respectively.

scholarly journals Single production of the excited electrons in the future FCC-based lepton–hadron colliders

2018 ◽  
Vol 33 (24) ◽  
pp. 1850141 ◽  
Author(s):  
A. Caliskan ◽  
S. O. Kara
Keyword(s):  
Cross Sections ◽  
Production Cross ◽  
Center Of Mass ◽  
Hadron Colliders ◽  
Mass Limit ◽  
Final State ◽  
Signal Process ◽  
Electron Production ◽  
Single Production ◽  
Electron And Photon

We study the composite electron production at the FCC-based three electron–proton colliders with the center-of-mass energies of 3.46, 10 and 31.6 TeV. For the signal process of [Formula: see text], the production cross-sections and decay widths of the excited electrons have been calculated. The differences of some kinematical quantities of the final state particles between the signal and background have been analyzed. For this purpose, transverse momentum and pseudorapidity distributions of electron and photon have been obtained and the kinematical cuts for discovery of the excited electrons have been assigned. We have finally determined the mass limits of excited electrons for observation and discovery by applying these cuts. It is shown that the mass limit for discovery obtained from the collider with [Formula: see text] TeV (called PWFA-LC[Formula: see text]⊗[Formula: see text]FCC) is 22.3 TeV for the integrated luminosity [Formula: see text].

Searching for the doubly charged scalars in the Georgi–Machacek model via γγ collisions at the ILC

2018 ◽  
Vol 33 (11) ◽  
pp. 1841003
Author(s):  
Jun Cao ◽  
Yu-Qi Li ◽  
Yao-Bei Liu
Keyword(s):  
Cross Sections ◽  
Linear Collider ◽  
Coupling Parameter ◽  
Production Cross ◽  
International Linear Collider ◽  
Scalar Coupling ◽  
Decay Channels ◽  
Decay Modes ◽  
The Future ◽  
Doubly Charged

The Georgi–Machacek (GM) model predicts the existence of the doubly-charged scalars [Formula: see text], which can be seen the typical particles in this model and their diboson decay channels are one of the most promising ways to discover such new doubly-charged scalars. Based on the constraints of the latest combined ATLAS and CMS Higgs boson diphoton signal strength data at [Formula: see text] confidence level, we focus on the study of the triple scalar production in [Formula: see text] collisions at the future International Linear collider (ILC): [Formula: see text], where the production cross-sections are very sensitive to the triple scalar coupling parameter [Formula: see text]. Considering the typical same-sign diboson decay modes for the doubly-charged scalars, the possible final signals might be detected via this process at the future ILC experiments.

Production cross-section of heavy flavored hadrons in pp collision at s = 7 TeV

2019 ◽  
Vol 34 (19) ◽  
pp. 1950150 ◽  
Author(s):  
Muhammad Ajaz ◽  
Irfan Khan ◽  
M. K. Suleymanov
Keyword(s):  
Experimental Data ◽  
Transverse Momentum ◽  
Differential Cross Section ◽  
Cross Section ◽  
Momentum Distribution ◽  
Cross Sections ◽  
Production Cross ◽  
Center Of Mass ◽  
Transverse Momentum Distribution ◽  
Mass Frame

The transverse momentum distribution of the differential production cross-sections of heavy flavored charm hadrons [Formula: see text], [Formula: see text] in pp collisions at 7 TeV are simulated. Predictions of DPMJETIII.17-1, HIJING1.383 and Sibyll2.3c are compared to the differential cross-section measurements of the LHCb experimental data presented in the region of [Formula: see text] and [Formula: see text], where the pp center of mass frame is used to measure the transverse momentum and rapidity. The models reproduce only some regions of [Formula: see text] and/or bins of [Formula: see text] but none of them predict completely all the [Formula: see text] bins over the entire [Formula: see text] range.

scholarly journals Predictions for the Isolated Prompt Photon Production at the LHC ats= 13 TeV

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Muhammad Goharipour ◽  
Hossein Mehraban
Keyword(s):  
Cross Sections ◽  
Transverse Energy ◽  
Production Cross ◽  
Center Of Mass ◽  
Photon Production ◽  
Prompt Photon ◽  
Center Of Mass Energy ◽  
History Of ◽  
The Impact ◽  
Hadronic Collisions

The prompt photon production in hadronic collisions has a long history of providing information on the substructure of hadrons and testing the perturbative techniques of QCD. Some valuable information about the parton densities in the nucleon and nuclei, especially of the gluon, can also be achieved by analysing the measurements of the prompt photon production cross section whether inclusively or in association with heavy quarks or jets. In this work, we present predictions for the inclusive isolated prompt photon production in pp collisions at center-of-mass energy of 13 TeV using various modern PDF sets. The calculations are presented as a function of both photon transverse energyETγand pseudorapidityηγfor the ATLAS kinematic coverage. We also study in detail the theoretical uncertainty in the cross sections due to the variation of the renormalization, factorization, and fragmentation scales. Moreover, we introduce and calculate the ratios of photon momenta for different rapidity regions and study the impact of various input PDFs on such quantity.

scholarly journals Study on the anomalous quartic $$W^+W^-\gamma \gamma $$ couplings of electroweak bosons in $$e^-p$$ collisions at the LHeC and the FCC-he

2021 ◽  
Vol 81 (3) ◽  
Author(s):  
A. Gutiérrez-Rodríguez ◽  
M. A. Hernández-Ruíz ◽  
E. Gurkanli ◽  
V. Ari ◽  
M. Köksal
Keyword(s):  
Cross Sections ◽  
Production Cross ◽  
Hadronic Decay ◽  
Production Mode ◽  
Decay Channels ◽  
The Future

AbstractIn this paper, a study is carried out on the $$e^-p \rightarrow e^-\gamma ^* p \rightarrow p W^-\gamma \nu _e$$ e - p → e - γ ∗ p → p W - γ ν e production to probe quartic $$W^+W^-\gamma \gamma $$ W + W - γ γ couplings at the Large Hadron electron Collider (LHeC) with $$\sqrt{s}= 1.30, 1.98\,\hbox {TeV}$$ s = 1.30 , 1.98 TeV and at the Future Circular Collider-hadron electron (FCC-he) with $$\sqrt{s}= 3.46, 5.29\,\hbox {TeV}$$ s = 3.46 , 5.29 TeV . Production cross-sections are determined for both at leptonic and hadronic decay channels of the W-boson. With the data from future $$e^-p$$ e - p colliders, it is possible to obtain sensitivity measures at $$95\%$$ 95 % C.L. on the anomalous $$f_ {M,i}/\Lambda ^4$$ f M , i / Λ 4 and $$ f_ {T,j}/\Lambda ^4$$ f T , j / Λ 4 couplings which are competitive with the limits obtained by the LHC, as well as with others limits reported in the literature. The production mode $$e^-p \rightarrow e^-\gamma ^* p \rightarrow p W^-\gamma \nu _e $$ e - p → e - γ ∗ p → p W - γ ν e in $$e^-p$$ e - p collisions offers a window for study the quartic $$W^+W^-\gamma \gamma $$ W + W - γ γ electroweak bosons couplings at the LHeC and the FCC-he, which provides a much cleaner collision environment than the LHC.

scholarly journals Study of central exclusive "Equation missing" No EquationSource Format="TEX", only image production in proton-proton collisions at $$\sqrt{s} = 5.02$$ and 13TeV

2020 ◽  
Vol 80 (8) ◽  
Author(s):  
A. M. Sirunyan ◽  
◽  
A. Tumasyan ◽  
W. Adam ◽  
F. Ambrogi ◽  
...  
Keyword(s):  
Transverse Momentum ◽  
Cross Sections ◽  
Production Cross ◽  
Center Of Mass ◽  
Momentum Equation ◽  
Theoretical Description ◽  
Proton Proton ◽  
Proton Collisions ◽  
Image Production ◽  
Proton Proton Collisions

Abstract Central exclusive and semiexclusive production of "Equation missing" pairs is measured with the CMS detector in proton-proton collisions at the LHC at center-of-mass energies of 5.02 and 13TeV. The theoretical description of these nonperturbative processes, which have not yet been measured in detail at the LHC, poses a significant challenge to models. The two pions are measured and identified in the CMS silicon tracker based on specific energy loss, whereas the absence of other particles is ensured by calorimeter information. The total and differential cross sections of exclusive and semiexclusive central "Equation missing" production are measured as functions of invariant mass, transverse momentum, and rapidity of the "Equation missing" system in the fiducial region defined as transverse momentum "Equation missing" and pseudorapidity "Equation missing". The production cross sections for the four resonant channels "Image missing" , "Equation missing", "Image missing" , and "Image missing" are extracted using a simple model. These results represent the first measurement of this process at the LHC collision energies of 5.02 and 13TeV.

COLOR-SEXTET QUARK PRODUCTIONS AT HADRON COLLIDERS

1992 ◽  
Vol 07 (12) ◽  
pp. 2679-2693 ◽  
Author(s):  
HIDEKAZU TANAKA ◽  
ISAMU WATANABE
Keyword(s):  
Symmetry Breaking ◽  
Cross Sections ◽  
Top Quark ◽  
Production Cross ◽  
Electroweak Symmetry Breaking ◽  
Electroweak Symmetry ◽  
Hadron Colliders ◽  
Dynamical Mechanism

Production cross-sections of color-sextet quarks at hadron colliders are estimated in various energies and the results are compared with cross-sections of the conventional top quark productions. Particular attentions are paid for a model recently proposed in Ref. 2 in order to explain the dynamical mechanism of the electroweak symmetry breaking. The model may be tested at SSC and LHC if the sextet quarks dominantly decay semileptonically through effective fourfermion interactions, or if the sextet quarks have long enough lifetime to reach the detectors.

MEASUREMENTS OF THE W AND Z PRODUCTION CROSS SECTIONS TIMES THE LEPTONIC BRANCHING RATIOS AT THE FERMILAB TEVATRON

2005 ◽  
Vol 20 (15) ◽  
pp. 3225-3229
Author(s):  
VICTORIA MARTIN
Keyword(s):  
Decay Width ◽  
Cross Sections ◽  
W Boson ◽  
Production Cross ◽  
Z Bosons ◽  
Branching Ratios ◽  
Total Decay Width ◽  
The Cross ◽  
Using Data

We report measurements of inclusive cross sections times branching ratios in electrons, muons or taus for W and Z bosons produced in [Formula: see text] collisions at 1.96 TeV using data collected with the DØ and CDF detectors in 2002-2004. Using the ratio of the cross sections times branching ratios for the W and Z bosons we also obtain constraints on the total decay width of the W boson.

Sign in / Sign up

Export Citation Format

Share Document