On the decay mode $$^7 Be_\Lambda \to \pi ^ - + ^1 H + ^1 H + ^1 H + ^4 He$$

1974 ◽  
Vol 10 (4) ◽  
pp. 139-143
Author(s):  
D. H. Davis ◽  
T. Tymieniecka ◽  
M. Jurić ◽  
U. Krecker ◽  
D. Kielczewska ◽  
...  
Keyword(s):  
Decay Mode

scholarly journals On the origin of long-lived particles

2020 ◽  
Vol 2020 (12) ◽  
Author(s):  
Jared Barron ◽  
David Curtin
Keyword(s):  
Decay Mode ◽  
Large Volume ◽  
Simplified Model ◽  
Production Mode ◽  
Decay Products ◽  
Bsm Physics ◽  
Level 1 ◽  
Displaced Vertex ◽  
Main Detector ◽  
Combining Information

Abstract MATHUSLA is a proposed large-volume displaced vertex (DV) detector, situated on the surface above CMS and designed to search for long-lived particles (LLPs) produced at the HL-LHC. We show that a discovery of LLPs at MATHUSLA would not only prove the existence of BSM physics, it would also uncover the theoretical origin of the LLPs, despite the fact that MATHUSLA gathers no energy or momentum information on the LLP decay products. Our analysis is simple and robust, making it easily generalizable to include more complex LLP scenarios, and our methods are applicable to LLP decays discovered in ATLAS, CMS, LHCb, or other external detectors. In the event of an LLP detection, MATHUSLA can act as a Level-1 trigger for the main detector, guaranteeing that the LLP production event is read out at CMS. We perform an LLP simplified model analysis to show that combining information from the MATHUSLA and CMS detectors would allow the LLP production mode topology to be determined with as few as ∼ 100 observed LLP decays. Underlying theory parameters, like the LLP and parent particle masses, can also be measured with ≲ 10% precision. Together with information on the LLP decay mode from the geometric properties of the observed DV, it is clear that MATHUSLA and CMS together will be able to characterize any newly discovered physics in great detail.

scholarly journals Fiducial cross sections for the lepton-pair-plus-photon decay mode in Higgs production up to NNLO QCD

2022 ◽  
Vol 2022 (1) ◽  
Author(s):  
X. Chen ◽  
T. Gehrmann ◽  
E. W. N. Glover ◽  
A. Huss
Keyword(s):  
Higgs Boson ◽  
Decay Mode ◽  
Cross Sections ◽  
Gluon Fusion ◽  
Lepton Pair ◽  
Distinctive Features ◽  
Photon Decay ◽  
Higgs Decay ◽  
Decay Products ◽  
Three Body

Abstract The rare three-body decay of a Higgs boson to a lepton-antilepton pair and a photon is starting to become experimentally accessible at the LHC. We investigate how higher-order QCD corrections to the dominant gluon-fusion production process impact on the fiducial cross sections in this specific Higgs decay mode for electrons and muons. Corrections up to NNLO QCD are found to be sizeable. They are generally uniform in kinematical variables related to the Higgs boson, but display several distinctive features in the kinematics of its individual decay products.

scholarly journals The “96 GeV excess” at the LHC

2021 ◽  
pp. 2142018
Author(s):  
T. Biekötter ◽  
M. Chakraborti ◽  
S. Heinemeyer
Keyword(s):  
Higgs Boson ◽  
Decay Mode ◽  
Higgs Doublet ◽  
Higgs Bosons ◽  
Final State ◽  
Light Higgs Boson ◽  
Doublet Model ◽  
Higgs Boson Search

The CMS collaboration reported an intriguing [Formula: see text] (local) excess at 96 GeV in the light Higgs-boson search in the diphoton decay mode. This mass coincides with a [Formula: see text] (local) excess in the [Formula: see text] final state at LEP. We briefly review the proposed combined interpretations for the two excesses. In more detail, we review the interpretation of this possible signal as the lightest Higgs boson in the 2 Higgs Doublet Model with an additional real Higgs singlet (N2HDM). We show which channels have the best prospects for the discovery of additional Higgs bosons at the upcoming Run 3 of the LHC.

CP determination for new spin zero mesons by the decay mode

1989 ◽  
Vol 320 (1) ◽  
pp. 61-85 ◽  
Author(s):  
Joseph R. Dell'Aquila ◽  
Charles A. Nelson
Keyword(s):  
Decay Mode

Accurate Measurement of the Beta-Asymmetry in Neutron Decay Rules out Dark Decay Mode

2020 ◽  
Vol 14 (S1) ◽  
pp. S140-S143
Author(s):  
B. Märkisch ◽  
H. Abele ◽  
D. Dubbers ◽  
H. Saul ◽  
T. Soldner
Keyword(s):  
Decay Mode ◽  
Neutron Decay ◽  
Dark Decay
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