18682407
NEW INCORPORATION OF THE STRONG INTERACTION IN NCG AND STANDARD MODEL
The standard model is reconstructed by a new method to incorporate strong inter­ action into our previous scheme based on non-commutative geometry. Generation mixing is also taken into account. The characteristic feature is to take the fermion field so as to contain quarks and leptons all together which is almost equal to that of the 80(10) grand unified theory (GUT). The space-time M4 x Z2; Minkowski space multiplied by a two point discrete space is prepared to express the left-handed and right-handed fermion fields. The generalized gauge field A(x, y) written in one-differential form extended on M4 X z2 is built to give the correct Dirac Lagrangian for the fermion sector. The fermion field is a vec­ tor in 24-dimensional space. Gauge and Higgs fields are written as 24 x 24 matrices. At the energy of equal coupling constants for both sheets y = ± expected to be the energy of the GUT scale, we obtain sin 2 Bw = 3/8 and mH = v'2mw· In general, the equation mH = (4/VJ)mw sin Ow is followed. Then, it should be noted that the same result as that of the grand unified theory such as 8U(5) and 80(10) GUTs is obtained without GUT but with an approach based on non-commutative geometry. In addition, the Higgs mass is related to other physical quantities as stated above.
121697964
QUARK MASS AND STRUCTURE FUNCTIONS FOR ELECTRON SCATTERING.
120474268
New Approach in Application of Field Theories to Lepton Hadron Scattering
122636061
Connes' Gauge Theory and Weinberg-Salam Model of Leptons on Noncommutative Space-Time
Connes’ gauge theory is defined on noncommutative space-time. It is applied to formulate a noncommutative Weinberg-Salam (WS)model in the leptonic sector with νR. It is shown that the model has two Higgs doublets and a gauge boson sector after the Higgs mechanism contains the massive charged gauge fields, two massless and two massive neutral gauge fields. It is also shown that, at the tree level, the neutrino couples to one of two ‘photons’, the electron interacts with both ‘photons’, and there exists a nontrivial νR-interaction on noncommutative space-time. To investigate the commutative limit of the model at the Lagrangian level, we generalize the charge conjugation transformation in QED to that in noncommutative QED. We show that there are two different generalizations, the C and � � � � � � .
119122771
Quark/lepton mass and mixing in $S_3$ invariant model and CP-violation of neutrino
Weak bases of flavors (u, c), (d,s), (e, \mu), (\nu_e,\nu_\mu) are assumed as the S_3 doublet and t, b, \tau, {\nu_\tau} are the S_3 singlet and further there are assumed S_3 doublet Higgs (H_1, H_2) and S_3 singlet Higgs H_S. We suggest an S_3 invariant model in which the Yukawa interactions constructed from these S_3 doublets and singlets are S_3 invariant. In this model, we can explain the quark sector mass hierarchy, quark mixing V_{CKM} and measure of CP violation naturally. In the leptonic sector, neutrino masses are assumed to be constructed through the see-saw mechanism from the Majorana mass. The tri-bimaximal-like character of neutrino mixing V_{MNS} can be explained dynamically without any other symmetry restrictions. It is predicted that a quasi-degenerate mass spectroscopy of neutrino is favorable, and values of |V_{MNS}|_{13}, CP violation invariant measure J and the effective Majorana mass | | in neutrino-less double beta decay are not so tiny.
119911003
Scaling Violation and Deep Inelastic Contribution to p-n Mass Difference
27648576
A data formatter for the ATLAS Fast Tracker
The Fast TracKer (FTK) is an upgrade to the ATLAS level-2 trigger. The FTK system will reconstruct tracks using data from the inner Pixel and SCT silicon detector modules at trigger rates up to 100 kHz. We present an overview of the Data Formatter system, which is designed to remap, share and reformat the Pixel and SCT module data to match the geometry of the FTK trigger towers.
62822934
Precise timing adjustment for the ATLAS level 1 endcap muon trigger system
The ATLAS level-1 endcap muon trigger system consists of about 4000 Thin Gap Chambers (TGC) with 320,000 input electronics channels in order to find level-1 trigger candidates for muons in both endcap regions. Three TGC stations are deployed with about 1m interval with 15m apart from the interaction point in z-direction on each endcap side and the radius of the station (disc form) is about 25m. Usually hit signals are not timely aligned because of different cable length and different time of muon flight. In order to supply reliable level-1 endcap trigger signals, we must adjust timing of hit signals for all the channels with the precision of±2.5ns. In the meantime we have to adjust also the bunch crossing phase used in the TGC system with one from LHC. We need, however, actual bunch crossing signals in order to accomplish this. In this paper we discuss strategies for timing alignment of individual channels with the timing adjustment facility embedded in the TGC electronics system and for the adjustment of the phase shift of the bunch crossing signals.