scholarly journals The NNLO gluon fusion Higgs production cross-section with many heavy quarks

2010 ◽  
Vol 2010 (6) ◽  
Author(s):  
Charalampos Anastasiou ◽  
Radja Boughezal ◽  
Elisabetta Furlan
Keyword(s):  
Cross Section ◽  
Production Cross Section ◽  
Production Cross ◽  
Gluon Fusion ◽  
Heavy Quarks ◽  
Higgs Production

scholarly journals Systematic study of diphoton resonance at 750 GeV from sgoldstino

2016 ◽  
Vol 31 (26) ◽  
pp. 1650151 ◽  
Author(s):  
Ran Ding ◽  
Yizhou Fan ◽  
Li Huang ◽  
Chuang Li ◽  
Tianjun Li ◽  
...  
Keyword(s):  
Decay Width ◽  
Cross Section ◽  
Production Cross Section ◽  
Production Cross ◽  
Vector Boson ◽  
Mass Difference ◽  
Hadron Collider ◽  
Gluon Fusion ◽  
Large Mass ◽  
Decay Length

The ATLAS and CMS Collaborations of the Large Hadron Collider (LHC) have reported an excess of events in diphoton channel with invariant mass of about 750 GeV. With low energy supersymmetry breaking, we systematically consider the sgoldstino scalar S as the new resonance, which is a linear combination of the CP-even scalar [Formula: see text] and CP-odd pseudoscalar [Formula: see text]. Because we show that [Formula: see text] and [Formula: see text] can be degenerated or have large mass splitting, we consider two cases for all the following three scenarios: (1) Single resonance, [Formula: see text] is the 750 GeV resonance decays to a pair of 1 GeV pseudoscalar [Formula: see text] with suitable decay length, these two [Formula: see text] decay into collimated pair of photons which cannot be distinguished at the LHC and may appear as diphotons instead of four photons. (2) Twin resonances, [Formula: see text] with a mass difference of about 40 GeV and both [Formula: see text] and [Formula: see text] decay into diphoton pairs. For productions, we consider three scenarios: (I) vector-boson fusion; (II) gluon–gluon fusion; (III) [Formula: see text] pair production. In all these scenarios with two kinds of resonances, we find the parameter space that satisfies the diphoton production cross-section from 3 to 13 fb and all the other experimental constraints. And we address the decay width as well. In particular, in the third scenario, we observe that the production cross-section is small but the decay width of [Formula: see text] or [Formula: see text] can be from 40 to 60 GeV. Even if the 750 GeV diphoton excesses were not confirmed by the ATLAS and CMS experiments, we point out that our proposal can be used to explain the current and future diphoton excesses.

Search for MSSM Higgs Decaying to Tau Pairs

2005 ◽  
Vol 20 (15) ◽  
pp. 3314-3316
Author(s):  
◽  
DONGWOOK JANG
Keyword(s):  
Higgs Boson ◽  
Cross Section ◽  
Production Cross Section ◽  
Production Cross ◽  
Branching Fraction ◽  
Higgs Production ◽  
The Other ◽  
Tau Leptons ◽  
Higgs Boson Decaying ◽  
Tau Pairs

We present the results of a search for a neutral MSSM Higgs boson decaying to a pair of tau leptons. The analyzed data sample corresponds to integrated luminosity of approximately 200 pb-1 of [Formula: see text] collisions at [Formula: see text]. It was collected by the CDF detector during Run 2 of the Fermilab Tevatron. We select tau pairs in which one of the taus decays hadronically and the other to e or μ and neutrinos. We see no evidence of signal and perform a fit to the (partially) reconstructed di-tau mass to set limits on the product of Higgs production cross-section and its branching fraction to taus.

scholarly journals LEPTOQUARK PAIR PRODUCTION AT ep COLLIDERS

1994 ◽  
Vol 09 (32) ◽  
pp. 3007-3021 ◽  
Author(s):  
JOHANNES BLÜMLEIN ◽  
EDWARD BOOS ◽  
ALEXANDER PUKHOV
Keyword(s):  
Pair Production ◽  
Cross Section ◽  
Production Cross Section ◽  
Production Cross ◽  
Gluon Fusion ◽  
Low Energy ◽  
Numerical Predictions ◽  
Independent Analysis ◽  
Pair Production Cross Section ◽  
Model Independent

The pair production cross-section for scalar and vector leptoquarks at ep colliders is calculated for the case of photon-gluon fusion. In a model independent analysis we consider the most general C and P conserving couplings of gluons and photons to both scalar and vector leptoquarks described by an effective low-energy Lagrangian which obeys U (1) em × SU (3)c invariance. Numerical predictions are given for the kinematical regime at HERA and LEP ⊗ LHC .

scholarly journals Higgs production cross-section in a Standard Model with four generations at the LHC

2011 ◽  
Vol 702 (4) ◽  
pp. 224-227 ◽  
Author(s):  
Charalampos Anastasiou ◽  
Stephan Buehler ◽  
Elisabetta Furlan ◽  
Franz Herzog ◽  
Achilleas Lazopoulos
Keyword(s):  
Standard Model ◽  
Cross Section ◽  
Production Cross Section ◽  
Production Cross ◽  
Higgs Production

TOP-CHARM ASSOCIATED PRODUCTION OF THE TOP-HIGGS AT HIGH ENERGY e+e- COLLIDERS

2005 ◽  
Vol 20 (36) ◽  
pp. 2819-2825
Author(s):  
YONG JIA ◽  
YANMING ZHANG
Keyword(s):  
Production Process ◽  
Cross Section ◽  
Production Cross Section ◽  
Production Cross ◽  
High Energy ◽  
Higgs Production ◽  
Associated Production ◽  
Order Of Magnitude

We have studied a top-Higgs production process [Formula: see text] in the topcolor assisted technicolor (TC2) model. The studies show that the production cross-section of [Formula: see text] is at the order of magnitude 10 fb in reasonable parameters space of TC2 model. A few hundred events of top-Higgs can be produced each year at the high energy linear e+e- colliders (LC). The top-Higgs may be directly observed via this process.

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