scholarly journals Charged Higgs effects in IceCube: PeV events and NSIs

2021 ◽  
Vol 2021 (9) ◽  
Author(s):  
Ujjal Kumar Dey ◽  
Newton Nath ◽  
Soumya Sadhukhan
Keyword(s):  
Standard Model ◽  
Parameter Space ◽  
High Energy ◽  
Ultra High Energy ◽  
Charged Scalar ◽  
High Energy Neutrino ◽  
Neutrino Detectors ◽  
The Standard Model ◽  
Charged Higgs ◽  
Neutrino Experiments

Abstract Extensions of the Standard Model with charged Higgs, having a non-negligible coupling with neutrinos, can have interesting implications vis-à-vis neutrino experiments. Such models can leave their footprints not only in the ultra-high energy neutrino detectors like IceCube but can also give rise to the neutrino non-standard interactions (NSIs). We consider a model based on the neutrinophilic two-Higgs doublets and study its imprints in the excess neutrino events in the 1–3 PeV energy bins at the IceCube. This is facilitated by the existence of a charged scalar in the model which can result in a Glashow-like resonance. The same charged scalar can be responsible for sizeable NSIs. We perform a combined study of the latest IceCube data along with various other constraints arising from different neutrino experiments together with the limits set by the LEP experiment, and explore the parameter space which can lead to a sizeable NSI.

scholarly journals Diffuse ultra-high energy neutrino fluxes and physics beyond the Standard Model

2010 ◽  
Vol 690 (1) ◽  
pp. 42-47 ◽  
Author(s):  
Atri Bhattacharya ◽  
Sandhya Choubey ◽  
Raj Gandhi ◽  
Atsushi Watanabe
Keyword(s):  
Standard Model ◽  
High Energy ◽  
Beyond The Standard Model ◽  
Ultra High Energy ◽  
High Energy Neutrino ◽  
Energy Neutrino ◽  
The Standard Model ◽  
Neutrino Fluxes

Ultra-high energy neutrino-nucleon and neutrino-electron cross-sections in the standard model, in supersymmetric and superstring models

1988 ◽  
Vol 39 (2) ◽  
pp. 241-250 ◽  
Author(s):  
A. V. Butkevich ◽  
A. B. Kaidalov ◽  
P. I. Krastev ◽  
A. V. Leonov-Vendrovski ◽  
I. M. Zheleznykh
Keyword(s):  
Standard Model ◽  
Cross Sections ◽  
High Energy ◽  
Ultra High Energy ◽  
High Energy Neutrino ◽  
Energy Neutrino ◽  
The Standard Model

scholarly journals Planck Neutrinos as Ultra High Energy Cosmic Rays

2020 ◽  
Vol 29 (1) ◽  
pp. 40-46
Author(s):  
Dmitri L. Khokhlov
Keyword(s):  
Black Holes ◽  
Cosmic Rays ◽  
Standard Model ◽  
Active Galactic Nuclei ◽  
Planck Scale ◽  
Galactic Nuclei ◽  
High Energy ◽  
Ultra High Energy ◽  
High Energy Cosmic Rays ◽  
The Standard Model

AbstractThe studied conjecture is that ultra high energy cosmic rays (UHECRs) are hypothetical Planck neutrinos arising in the decay of the protons falling onto the gravastar. The proton is assumed to decay at the Planck scale into positron and four Planck neutrinos. The supermassive black holes inside active galactic nuclei, while interpreted as gravastars, are considered as UHECR sources. The scattering of the Planck neutrinos by the proton at the Planck scale is considered. The Planck neutrinos contribution to the CR events may explain the CR spectrum from 5 × 1018 eV to 1020 eV. The muon number in the Planck neutrinos-initiated shower is estimated to be larger by a factor of 3/2 in comparison with the standard model that is consistent with the observational data.

scholarly journals Phased Radio Arrays for Ultra-high Energy Neutrino Detectors

2016 ◽  
Author(s):  
Keith Bechtol ◽  
Abigail G. Vieregg ◽  
Andres Romero-Wolf ◽  
Stephanie Wissel
Keyword(s):  
High Energy ◽  
Ultra High Energy ◽  
High Energy Neutrino ◽  
Neutrino Detectors ◽  
Energy Neutrino

scholarly journals OPERATIONAL INDISTINGUISHABLY OF VARYING SPEED OF LIGHT THEORIES

2004 ◽  
Vol 13 (04) ◽  
pp. 709-716 ◽  
Author(s):  
NOSRATOLLAH JAFARI ◽  
AHMAD SHARIATI
Keyword(s):  
Cosmic Rays ◽  
Standard Model ◽  
Special Relativity ◽  
High Energy ◽  
Ultra High Energy ◽  
Speed Of Light ◽  
High Energy Cosmic Rays ◽  
Light Speed ◽  
The Standard Model

The varying speed of light theories have been recently proposed to solve the standard model problems and anomalies in the ultra high energy cosmic rays. These theories try to formulate a new relativity with no assumptions about the constancy of the light speed. In this regard, we study two theories and want to show that these theories are not the new theories of relativity, but only re-descriptions of Einstein's special relativity.

scholarly journals IceCube High Energy Starting Events at 7.5 Years - New Measurements of Flux and Flavor

2019 ◽  
Vol 207 ◽  
pp. 02005 ◽  
Author(s):  
Juliana Stachurska
Keyword(s):  
Beyond Standard Model ◽  
Standard Model ◽  
Charged Particles ◽  
High Energy ◽  
Cherenkov Light ◽  
South Pole ◽  
High Energy Neutrino ◽  
Event Sample ◽  
The Standard Model ◽  
Production Mechanisms

The IceCube Neutrino Observatory at the South Pole, which detects Cherenkov light from charged particles produced in neutrino interactions, firmly established the existence of an astrophysical high-energy neutrino component. Here I present IceCube’s High-Energy Starting Event sample and the new results obtained with a livetime of about 7.5 years. I will focus on the new measurement of the flavor composition performed using this sample. IceCube is directly sensitive to each neutrino flavor via the single cascade, track and double cascade event topologies, the latter being the topology produced in tauneutrino interactions above an energy threshold of ~100 TeV. A measurement of the flavor ratio on Earth can provide important constraints on sources and production mechanisms within the standard model, and also constrain various beyond-standard-model processes.

scholarly journals Production of the Doubly Charged Higgs Boson in Association with the SM Gauge Bosons and/or Other HTM Scalars at Hadron Colliders

Symmetry ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1240
Author(s):  
Bartosz Dziewit ◽  
Magdalena Kordiaczyńska ◽  
Tripurari Srivastava
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
Charged Higgs Boson ◽  
Higgs Bosons ◽  
Hadron Colliders ◽  
Gauge Bosons ◽  
Charged Scalar ◽  
The Standard Model ◽  
Charged Higgs ◽  
Doubly Charged

We investigate an extension of the Standard Model with one additional triplet of scalar bosons. Altogether, the model contains four Higgs bosons. We analyze the associated production of the doubly charged scalar with the Standard Model gauge bosons and the remaining Higgs bosons of the model, which are: the light (SM) and heavy neutral scalars and a singly charged scalar. We estimate, in the context of the present (HL–LHC) and future (FCC–hh) hadron colliders, the most promising processes in which a single produced doubly charged Higgs boson is involved.

scholarly journals Simulation and analysis chain for acoustic ultra-high energy neutrino detectors in water

2013 ◽  
Author(s):  
M. Neff ◽  
G. Anton ◽  
A. Enzenhöfer ◽  
K. Graf ◽  
J. Hößl ◽  
...  
Keyword(s):  
High Energy ◽  
Ultra High Energy ◽  
High Energy Neutrino ◽  
Neutrino Detectors ◽  
Energy Neutrino

scholarly journals Yukawa coupling unification in an SO(10) model consistent with Fermilab (g − 2)μ result

2021 ◽  
Vol 2021 (6) ◽  
Author(s):  
Amin Aboubrahim ◽  
Pran Nath ◽  
Raza M. Syed
Keyword(s):  
Neural Network ◽  
Standard Model ◽  
Parameter Space ◽  
Yukawa Coupling ◽  
High Energy ◽  
Recent Analysis ◽  
Third Generation ◽  
High Luminosity ◽  
The Third ◽  
The Standard Model

Abstract We investigate the Yukawa coupling unification for the third generation in a class of SO(10) unified models which are consistent with the 4.2 σ deviation from the standard model of the muon g − 2 seen by the Fermilab experiment E989. A recent analysis in supergravity grand unified models shows that such an effect can arise from supersymmetric loops correction. Using a neural network, we further analyze regions of the parameter space where Yukawa coupling unification consistent with the Fermilab result can appear. In the analysis we take into account the contributions to Yukawas from the cubic and the quartic interactions. We test the model at the high luminosity and high energy LHC and estimate the integrated luminosities needed to discover sparticles predicted by the model.

COSMIC RAY EVIDENCE FOR PHYSICS BEYOND THE STANDARD MODEL

1990 ◽  
Vol 05 (10) ◽  
pp. 705-712
Author(s):  
G. DOMOKOS ◽  
S. KOVESI DOMOKOS
Keyword(s):  
Standard Model ◽  
Observational Data ◽  
Center Of Mass ◽  
Cosmic Ray ◽  
High Energy ◽  
Point Sources ◽  
Beyond The Standard Model ◽  
Ultra High Energy ◽  
The Standard Model ◽  
New Phenomena

Ultra high energy observational data collected during the last decade indicate an anomalous interaction of the particles emitted by some point sources in the sky. We briefly review the evidence and discuss possible explanations of the observed anomalies. The most likely interpretation is that at energies of the order of a few TeV in the Center of Mass, new phenomena begin to take place which cannot be explained within the framework of the Standard Model. Implications of such an explanation are briefly discussed.

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