scholarly journals Strange quark contribution to nucleon form factors

2008 ◽  
Author(s):  
Ronald Babich
Keyword(s):  
Strange Quark ◽  
Form Factors ◽  
Quark Contribution ◽  
Nucleon Form Factors

ASYMMETRIES IN POLARIZED ELECTRON SCATTERING AND THE STRANGENESS CONTENT OF THE NUCLEON

2009 ◽  
Vol 24 (11n13) ◽  
pp. 881-886
Author(s):  
SEBASTIAN BAUNACK
Keyword(s):  
Electron Scattering ◽  
Strange Quark ◽  
Form Factors ◽  
Strange Quarks ◽  
Quark Contribution ◽  
Nucleon Form Factors ◽  
Strangeness Content ◽  
Existing Data

In the viewpoint of QCD, the nucleon is made up of constituent quarks, sea quarks and gluons. Concerning the quark sea, also strange quarks can contribute to the nucleon properties. Parity violating electron scattering offers a tool to investigate the strange quark contribution to the nucleon form factors. The measurements of different experiments are discussed and the recent results from the A4 collaboration at MAMI is presented. Altogether the existing data allow to give constraints on the strangeness contribution.

scholarly journals Impact of Nonstandard Interactions on Neutrino-Nucleon Scattering

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
D. K. Papoulias ◽  
T. S. Kosmas
Keyword(s):  
Cross Sections ◽  
Strange Quark ◽  
Event Rate ◽  
Neutral Current ◽  
Form Factors ◽  
Nucleon Interaction ◽  
Nucleon Scattering ◽  
Neutrino Scattering ◽  
Nucleon Form Factors ◽  
Lepton Flavour

Nonstandard neutrino-nucleon interaction is formulated and explored within the energy range of quasi-elastic scattering. In particular, the study focuses on the neutral-current elastic (anti)neutrino scattering off nucleons described by the exotic reactionsνα(ν¯α)+n→νβ(ν¯β)+nandνα(ν¯α)+p→νβ(ν¯β)+p, which provide corrections to the dominant Standard Model processes. In this context, it is shown that the required exotic nucleon form factors may have a significant impact on the relevant cross sections. Besides cross sections, the event rate is expected to be rather sensitive to the magnitude of the lepton-flavour violating parameters resulting in an excess of events. The overlap of nonstandard interactions and strange quark contributions, in the region of few GeV neutrino energies, is also examined. The formalism is applied for the case of the relevant neutrino-nucleon scattering experiments (LSND, MiniBooNE, etc.) and motivates the notion that such facilities have high potential to probe NSI.

scholarly journals Bs → Kℓv form factors with 2+1 flavors

2018 ◽  
Vol 175 ◽  
pp. 13008 ◽  
Author(s):  
Yuzhi Liu ◽  
Jon A. Bailey ◽  
A. Bazavov ◽  
C. Bernard ◽  
C. M. Bouchard ◽  
...  
Keyword(s):  
Quark Mass ◽  
Strange Quark ◽  
Lattice Spacing ◽  
Light Quark ◽  
Form Factors ◽  
Ckm Matrix ◽  
Strange Quark Mass ◽  
Light Quark Mass ◽  
B Quark

Using the MILC 2+1 flavor asqtad quark action ensembles, we are calculating the form factors f0 and f+ for the semileptonic Bs → Kℓv decay. A total of six ensembles with lattice spacing from ≈ 0.12 to 0.06 fm are being used. At the coarsest and finest lattice spacings, the light quark mass m’l is one-tenth the strange quark mass m’s. At the intermediate lattice spacing, the ratio m’l/m’s ranges from 0.05 to 0.2. The valence b quark is treated using the Sheikholeslami-Wohlert Wilson-clover action with the Fermilab interpretation. The other valence quarks use the asqtad action. When combined with (future) measurements from the LHCb and Belle II experiments, these calculations will provide an alternate determination of the CKM matrix element |Vub|.

scholarly journals Vector and axial nucleon form factors: A duality constrained parameterization

2007 ◽  
Vol 53 (3) ◽  
pp. 349-354 ◽  
Author(s):  
A. Bodek ◽  
S. Avvakumov ◽  
R. Bradford ◽  
H. Budd
Keyword(s):  
Form Factors ◽  
Nucleon Form Factors

Markov-Yukawa conditions and nucleon form factors in the relativistic quark model

1973 ◽  
Vol 8 (1) ◽  
pp. 11-15 ◽  
Author(s):  
V. F. Dushenko ◽  
A. P. Kobushkin ◽  
Yu. M. Sinjukov
Keyword(s):  
Quark Model ◽  
Form Factors ◽  
Relativistic Quark Model ◽  
Nucleon Form Factors

scholarly journals Measurement of Strange Quark Contributions to the Vector Form Factors of the Proton atQ2=0.22  (GeV/c)2

2009 ◽  
Vol 102 (15) ◽  
Author(s):  
S. Baunack ◽  
K. Aulenbacher ◽  
D. Balaguer Ríos ◽  
L. Capozza ◽  
J. Diefenbach ◽  
...  
Keyword(s):  
Strange Quark ◽  
Form Factors ◽  
Vector Form

Vector-Meson Fit to Nucleon Form Factors

1963 ◽  
Vol 132 (3) ◽  
pp. 1249-1251 ◽  
Author(s):  
M. W. Kirson
Keyword(s):  
Vector Meson ◽  
Form Factors ◽  
Nucleon Form Factors
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