Bag model prediction for the nucleon's chiral-odd twist-3 distribution hL(x, Q2) at high Q2

Q2 Evolution of Chiral-Odd Twist-3 Distributions hL(x,Q2) and e(x,Q2) in Large-Nc QCD.

Bag model prediction for the nucleon ’ s chiral - odd twist - 3 distribution h L ( x , Q 2 ) at high Q 2

We study the Q evolution of the nucleon’s chiral-odd twist-3 distribution hL(x,Q ) starting from the MIT bag model calculation. A simple GLAP equation for hL(x,Q ) obtained at large Nc is used for the Q 2 evolution. The correction due to the finite value of Nc is O(1/N c ) ∼ 10 % level. It turns out that the twist-3 contribution to hL(x,Q) is significantly reduced at Q = 10 GeV in contrast to t...

Jets in High-q2 Dis at Hera

The shapes of jets with transverse energies, E jet T , up to 45 GeV produced in neutral-current(NC) and charged-current (CC) deep inelastic e + p scattering (DIS) at Q 2 > 100 GeV 2 have been measured with the ZEUS detector at HERA. Jets are identiied using a cone algorithm in the ? ' plane with a cone radius of one unit. The jets become narrower as E jet T increases. The jet shapes in NC and C...

The chirally-odd twist-3 distribution function ea(x) in the chiral quark-soliton model

The chirally-odd twist-3 nucleon distribution e(x) is studied in the large-Nc limit in the framework of the chiral quark-soliton model at a low normalization point of about 0.6 GeV. The remarkable result is that in the model e(x) contains a δ-function-type singularity at x = 0. The regular part of e(x) is found to be sizeable at the low scale of the model and in qualitative agreement with bag m...

Intersections of the Hermitian surface with irreducible quadrics in PG(3, q2), q odd

In PG(3, q), with q odd, we determine the possible intersection sizes of a Hermitian surface H and an irreducible quadric Q having the same tangent plane at a common point P ∈ Q ∩H.