scholarly journals Bounds on second generation scalar leptoquarks from the anomalous magnetic moment of the muon

1996 ◽  
Vol 53 (1) ◽  
pp. 555-557 ◽  
Author(s):  
G. Couture ◽  
H. König
Keyword(s):  
Magnetic Moment ◽  
Anomalous Magnetic Moment ◽  
Second Generation ◽  
Generation Scalar ◽  
Scalar Leptoquarks

scholarly journals Search for pair production of first- and second-generation scalar leptoquarks inppcollisions ats=7  TeV

2012 ◽  
Vol 86 (5) ◽  
Author(s):  
S. Chatrchyan ◽  
V. Khachatryan ◽  
A. M. Sirunyan ◽  
A. Tumasyan ◽  
W. Adam ◽  
...  
Keyword(s):  
Pair Production ◽  
Second Generation ◽  
Generation Scalar ◽  
First And Second Generation ◽  
Scalar Leptoquarks

scholarly journals Search for pair production of second generation scalar leptoquarks

2009 ◽  
Vol 671 (2) ◽  
pp. 224-232 ◽  
Author(s):  
V.M. Abazov ◽  
B. Abbott ◽  
M. Abolins ◽  
B.S. Acharya ◽  
M. Adams ◽  
...  
Keyword(s):  
Pair Production ◽  
Second Generation ◽  
Generation Scalar ◽  
Scalar Leptoquarks

scholarly journals Scalar leptoquarks in leptonic processes

2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
Andreas Crivellin ◽  
Christoph Greub ◽  
Dario Müller ◽  
Francesco Saturnino
Keyword(s):  
Standard Model ◽  
Magnetic Moment ◽  
Anomalous Magnetic Moment ◽  
Vacuum Expectation ◽  
Vacuum Expectation Value ◽  
Lepton Flavor ◽  
Interaction Terms ◽  
The Standard Model ◽  
The One ◽  
Scalar Leptoquarks

Abstract Leptoquarks are hypothetical new particles, which couple quarks directly to leptons. They experienced a renaissance in recent years as they are prime candidates to explain the so-called flavor anomalies, i.e. the deviations between the Standard Model predictions and measurements in b → sℓ+ℓ− and b → cτν processes and in the anomalous magnetic moment of the muon. At the one-loop level these particles unavoidably generate effects in the purely leptonic processes like Z → ℓ+ℓ−, Z →$$ v\overline{v} $$ v v ¯ , W → ℓν and h → ℓ+ℓ− and can even generate non-zero rates for lepton flavor violating processes such as ℓ → ℓ′γ, Z → ℓ+ℓ′−, h → ℓ+ℓ′− and ℓ → 3ℓ′. In this article we calculate these processes for all five representations of scalar Leptoquarks. We include their most general interaction terms with the Standard Model Higgs boson, which leads to Leptoquark mixing after the former acquires a vacuum expectation value. In our phenomenological analysis we investigate the effects in modified lepton couplings to electroweak gauge bosons, we study the correlations of the anomalous magnetic moment of the muon with h → μ+μ− and Z → μ+μ− as well as the interplay between different lepton flavor violating decays.

scholarly journals Search for pair production of second generation scalar leptoquarks in pp¯ collisions at s=1.96 TeV

2006 ◽  
Vol 636 (3-4) ◽  
pp. 183-190 ◽  
Author(s):  
V.M. Abazov ◽  
B. Abbott ◽  
M. Abolins ◽  
B.S. Acharya ◽  
M. Adams ◽  
...  
Keyword(s):  
Pair Production ◽  
Second Generation ◽  
Generation Scalar ◽  
Scalar Leptoquarks

scholarly journals Search for Pair Production of Second-Generation Scalar Leptoquarks inppCollisions ats=7  TeV

2011 ◽  
Vol 106 (20) ◽  
Author(s):  
V. Khachatryan ◽  
A. M. Sirunyan ◽  
A. Tumasyan ◽  
W. Adam ◽  
T. Bergauer ◽  
...  
Keyword(s):  
Pair Production ◽  
Second Generation ◽  
Generation Scalar ◽  
Scalar Leptoquarks

scholarly journals Search for second-generation scalar leptoquarks inpp¯collisions ats=1.96  TeV

2006 ◽  
Vol 73 (5) ◽  
Author(s):  
A. Abulencia ◽  
D. Acosta ◽  
J. Adelman ◽  
T. Affolder ◽  
T. Akimoto ◽  
...  
Keyword(s):  
Second Generation ◽  
Generation Scalar ◽  
Scalar Leptoquarks

scholarly journals Constraining flavour patterns of scalar leptoquarks in the effective field theory

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Marzia Bordone ◽  
Oscar Catà ◽  
Thorsten Feldmann ◽  
Rusa Mandal
Keyword(s):  
Field Theory ◽  
Standard Model ◽  
Effective Field Theory ◽  
Magnetic Moment ◽  
Anomalous Magnetic Moment ◽  
Branching Ratios ◽  
Effective Field ◽  
The Standard Model ◽  
Scalar Leptoquarks

Abstract We investigate the viability of extending the Standard Model with S1 and S3 scalar leptoquarks when the flavour structure is parametrized in terms of Froggatt-Nielsen charges. In contrast to a similar analysis with a vector leptoquark, we find essentially two solutions for the charges that fit the experimental constraints, which are dominated by the current tensions in B decays. These two scenarios differ in their estimate of the anomalous magnetic moment of the muon, (g − 2), but they both predict sizeable contributions to τ → μγ, $$ {\overline{B}}_s $$ B ¯ s → τ±μ∓ and B+→ K+τ+μ− decays, whose branching ratios are close to the current experimental limits.

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