Related Experiment Video
Updated: Feb 17, 2026
07:46
Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
9.0K
Interference in the gg→h→γγ On-Shell Rate and the Higgs Boson Total Width
John Campbell1, Marcela Carena1,2,3, Roni Harnik1
1Theoretical Physics Department, Fermilab, Batavia, Illinois 60510, USA.
Physical Review Letters
|December 9, 2017
Summary
We studied Higgs boson interference with QCD background, finding it reduces the on-shell rate by 2%. This interference effect, potentially enhanced by new physics, offers a novel way to indirectly constrain Higgs boson width using measurements.
Area of Science:
- High Energy Physics
- Particle Physics
- Quantum Chromodynamics (QCD)
Background:
- Interference between Higgs signal and QCD background in gg→h→γγ processes is crucial.
- Understanding this interference impacts the on-shell Higgs rate and measurements.
Purpose of the Study:
- To analyze the effect of Higgs-QCD interference on the on-shell Higgs rate.
- To explore how this interference can be used to indirectly constrain the Higgs boson width.
- To investigate the potential of the High-Luminosity Large Hadron Collider (HL-LHC) in constraining Higgs width.
Main Methods:
- Consideration of interference effects in the gg→h→γγ channel.
- Analysis of the impact of sizable strong phases on the on-shell cross section.
- Exploration of beyond the Standard Model physics scenarios that enhance interference.
- Identification of width-sensitive observables using total and differential rates.
Main Results:
- Sizable strong phases cause approximately 2% destructive interference in the Standard Model on-shell cross section.
- Beyond Standard Model physics can enhance this interference effect.
- The interference effect provides a novel method for indirect constraints on the Higgs width.
- The HL-LHC could potentially constrain Higgs widths of the order of tens of MeV.
Conclusions:
- The study highlights the importance of Higgs-QCD interference for precise Higgs rate measurements.
- Indirect constraints on Higgs width via interference offer a new avenue for exploration.
- Further QCD calculations are motivated to reduce uncertainties in these predictions.
- Future experiments like the HL-LHC are crucial for probing these subtle effects.
More Related Videos
Related Concept Videos
01:30Atomic Emission Spectroscopy: Interference
662
In atomic emission spectroscopy (AES), high-temperature atomizers excite a broad range of elements and molecules that generate complex emissions from sources such as oxides, hydroxides, and flame combustion products in the flame or plasma. Several strategies can be employed to minimize spectral interferences caused by overlapping emission lines or bands. These include increasing instrument resolution, choosing alternative emission lines, optimally placing the detector in low-background regions,...
662
02:18Interference and Diffraction
52.7K
Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.
52.7K
01:10Interference: Path Lengths
2.3K
Consider two sources of sound, that may or may not be in phase, emitting waves at a single frequency, and consider the frequencies to be the same.
Two special sources may be considered when they are in phase. This can be easily achieved by feeding the two sources from the same source. An example would be synchronizing the two speakers by feeding them with the same source, such as the sound waves produced by a tuning fork. This setup ensures that the two sources have the same frequency and are...
Two special sources may be considered when they are in phase. This can be easily achieved by feeding the two sources from the same source. An example would be synchronizing the two speakers by feeding them with the same source, such as the sound waves produced by a tuning fork. This setup ensures that the two sources have the same frequency and are...
2.3K
01:25Atomic Absorption Spectroscopy: Interference
2.1K
Interference leads to systematic error in atomic absorption (AA) measurements by enhancing or diminishing the analytical signal or the background. These interferences can be grouped into three main categories: spectral interference, chemical interference, and physical interference.
Spectral interference occurs when signals from other elements or molecules overlap with the analyte signal, falsely elevating or masking the analyte's absorbance. This interference can be corrected using Zeeman,...
Spectral interference occurs when signals from other elements or molecules overlap with the analyte signal, falsely elevating or masking the analyte's absorbance. This interference can be corrected using Zeeman,...
2.1K
01:07Interference and Superposition of Waves
7.1K
When two waves of the same nature occur in the same region simultaneously, they result in interference. Interference of waves implies that the net effect of the waves is the sum of the individual waves' effects. However, it does not imply that the individual waves affect the propagation of other waves.
Interference occurs in mechanical waves, such as sound waves, waves on a string, and surface water waves. Mechanical waves correspond to the physical displacement of particles. Hence,...
Interference occurs in mechanical waves, such as sound waves, waves on a string, and surface water waves. Mechanical waves correspond to the physical displacement of particles. Hence,...
7.1K
01:20Inductively Coupled Plasma-Mass Spectrometry (ICP-MS): Interferences
1.5K
Inductively coupled plasma–mass spectrometry (ICP–MS) is a highly selective and sensitive technique for accurate elemental analysis. Though the analysis of ICP–MS mass spectra is comparatively straightforward, it is affected by spectroscopic and non-spectroscopic interferences. Spectroscopic interferences arise when the plasma contains ionic species with an m/z value the same as the analyte ion. Spectroscopic interference can be categorized as isobaric, polyatomic ions, and...
1.5K