scholarly journals Search for Excited Spin-3/2 Neutrinos at LHeC

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
A. Ozansoy ◽  
V. Arı ◽  
V. Çetinkaya
Keyword(s):  
Invariant Mass ◽  
Cross Section ◽  
Decay Mode ◽  
Production Cross Section ◽  
Production Cross ◽  
Gauge Bosons ◽  
Final State ◽  
Mass Distributions ◽  
Contour Plots ◽  
Single Production

We study the potential of the nextepcollider, namely, LHeC, with two optionss=1.3 TeV ands=1.98 TeV, to search for excited spin-1/2 and spin-3/2 neutrinos. We calculate the single production cross-section of excited spin-1/2 and spin-3/2 neutrinos according to their effective currents describing their interactions between gauge bosons and SM leptons. We choose theν⋆→eWdecay mode of excited neutrinos andW→jjdecay mode ofW-boson for the analysis. We put some kinematical cuts for the final state detectable particles and plot the invariant mass distributions for signal and the corresponding backgrounds. In order to obtain accessible limits for excited neutrino couplings, we show thef-f′andciV-ciAcontour plots for excited spin-1/2 and excited spin-3/2 neutrinos, respectively.

scholarly journals STUDIES OF PROPERTIES OF THE η′ MESON AT THE COSY–11 FACILITY

2011 ◽  
Vol 26 (03n04) ◽  
pp. 640-641
Author(s):  
E. CZERWIŃSKI ◽  
J. KLAJA ◽  
P. KLAJA ◽  
P. MOSKAL
Keyword(s):  
Comparative Analysis ◽  
Invariant Mass ◽  
Mass Distribution ◽  
Cross Section ◽  
Production Cross Section ◽  
Production Cross ◽  
Nucleon Nucleon ◽  
Total Width ◽  
Mass Distributions ◽  
Isospin Dependence

We shortly discuss results on the isospin dependence of the η′ production cross section in nucleon-nucleon collisions, results of comparative analysis of the invariant mass distributions for the pp → ppη′ and pp → ppη reactions, and we present the value of the total width of the η′ meson as derived directly from the mass distribution measured with the mass resolution of 0.3 MeV/c2.

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 thett¯production cross section inpp¯collisions ats=1.96  TeVin the all hadronic decay mode

2006 ◽  
Vol 74 (7) ◽  
Author(s):  
A. Abulencia ◽  
J. Adelman ◽  
T. Affolder ◽  
T. Akimoto ◽  
M. G. Albrow ◽  
...  
Keyword(s):  
Cross Section ◽  
Decay Mode ◽  
Production Cross Section ◽  
Production Cross ◽  
Hadronic Decay ◽  
Hadronic Decay Mode

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 TRIPLE REGGE ANALYSIS AND $K\bar{K}$ OFF-SHELL INTERACTIONS FROM $p\mathop{\to} \limits^{K^-}\Lambda$ AT 110 GeV/c

1988 ◽  
Vol 03 (04) ◽  
pp. 825-839 ◽  
Author(s):  
S. BANERJEE ◽  
S.N. GANGULI ◽  
A. GURTU ◽  
P.K. MALHOTRA ◽  
K. SUDHAKAR ◽  
...  
Keyword(s):  
Cross Section ◽  
Production Cross Section ◽  
Production Cross ◽  
Fragmentation Region ◽  
Missing Mass ◽  
Mass Distributions ◽  
Strange Meson ◽  
Made In

A study of Λ production has been made in the proton fragmentation region from K−p interactions at 110 GeV/c. From a simultaneous fit to the missing mass distributions and the inclusive Λ production cross section with P tab ≥10 GeV/c , the intercept of the strange meson trajectory is determined to be ≃−0.15. The contribution of the Pomeron is found to be dominant at the [Formula: see text] vertex in 110 GeV/c K−p interactions. The charged multiplicities and moments from off-shell [Formula: see text] interactions have been studied as a function of M2, the c.m. energy square of the virtual [Formula: see text] system.

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.

Sign in / Sign up

Export Citation Format

Share Document