Measurement of the cross section and the single transverse spin asymmetry of forward neutrons from pp collisions at RHIC-PHENIX

2007 ◽  
Author(s):  
Manabu Togawa ◽  
Keyword(s):  
Cross Section ◽  
Spin Asymmetry ◽  
Transverse Spin ◽  
Pp Collisions ◽  
The Cross

scholarly journals Measurement of the cross section and longitudinal double-spin asymmetry for dijet production in polarized pp collisions at s=200  GeV

2017 ◽  
Vol 95 (7) ◽  
Author(s):  
L. Adamczyk ◽  
J. K. Adkins ◽  
G. Agakishiev ◽  
M. M. Aggarwal ◽  
Z. Ahammed ◽  
...  
Keyword(s):  
Cross Section ◽  
Spin Asymmetry ◽  
Pp Collisions ◽  
Dijet Production ◽  
Double Spin Asymmetry ◽  
Double Spin ◽  
200 Gev ◽  
The Cross

ISOSPIN DECOMPOSITION OF pp → NNππ CROSS SECTIONS — DO WE SEE A SIGN OF Δ(1600) EXCITATION IN THE nnπ+π+ CHANNEL?

2009 ◽  
Vol 24 (02n03) ◽  
pp. 450-453
Author(s):  
◽  
T. SKORODKO ◽  
M. BASHKANOV ◽  
D. BOGOSLOWSKY ◽  
H. CALÉN ◽  
...  
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Differential Cross ◽  
Pion Production ◽  
Significant Contribution ◽  
Differential Cross Sections ◽  
Pp Collisions ◽  
Theoretical Predictions ◽  
Order Of Magnitude ◽  
The Cross

The two-pion production in pp-collisions has been investigated in exclusive measurements from threshold up to Tp = 1.36 GeV . Total and differential cross sections have been obtained for the channels pnπ+π0, ppπ+π-, ppπ0π0 and also nnπ+π+. For intermediate incident energies Tp > 1 GeV , i.e. in the region, which is beyond the Roper excitation but at the onset of ΔΔ excitation the total ppπ0π0 cross section falls behind theoretical predictions by as much as an order of magnitude near 1.2 GeV, whereas the nnπ+π+ cross section is a factor of five larger than predicted. A model-unconstrained isospin decompostion of the cross section points to a significant contribution of an isospin 3/2 resonance other than the Δ(1232). As a possible candidate the Δ(1600) is discussed.

BESSEL-WEIGHTED ASYMMETRIES AND TRANSVERSE SPIN EFFECTS

2012 ◽  
Vol 20 ◽  
pp. 168-176
Author(s):  
LEONARD GAMBERG
Keyword(s):  
Transverse Momentum ◽  
Cross Section ◽  
Parton Distribution ◽  
Evolution Equations ◽  
Distribution Functions ◽  
Transverse Spin ◽  
High Transverse Momentum ◽  
Transverse Momentum Dependent ◽  
Fragmentation Functions ◽  
The Cross

We consider the cross section for semi-inclusive deep inelastic scattering in Fourier space, conjugate to the outgoing hadron's transverse momentum, where convolutions of transverse momentum dependent parton distribution functions and fragmentation functions become simple products. Individual asymmetric terms in the cross section can be projected out by means of a generalized set of weights involving Bessel functions. Advantages of employing these Bessel weights are that they suppress (divergent) contributions from high transverse momentum and that soft factors cancel in (Bessel-) weighted asymmetries. Also, the resulting compact expressions immediately connect to previous work on evolution equations for transverse momentum dependent parton distribution and fragmentation functions and to quantities accessible in lattice QCD. Bessel-weighted asymmetries are thus model independent observables that augment the description and our understanding of correlations of spin and momentum in nucleon structure.

scholarly journals Measurement of the cross section for isolated-photon plus jet production in pp collisions at s=13 TeV using the ATLAS detector

2018 ◽  
Vol 780 ◽  
pp. 578-602 ◽  
Author(s):  
M. Aaboud ◽  
G. Aad ◽  
B. Abbott ◽  
O. Abdinov ◽  
B. Abeloos ◽  
...  
Keyword(s):  
Cross Section ◽  
Atlas Detector ◽  
Pp Collisions ◽  
Jet Production ◽  
The Cross

scholarly journals Measurement of the cross-section for Z → e+e- production in pp collisions at $\sqrt{s}=7$ TeV

2013 ◽  
Vol 2013 (2) ◽  
Author(s):  
R. Aaij ◽  
◽  
C. Abellan Beteta ◽  
A. Adametz ◽  
B. Adeva ◽  
...  
Keyword(s):  
Cross Section ◽  
Pp Collisions ◽  
The Cross

scholarly journals Measurement of the cross section ratio σtt¯bb¯/σtt¯jj in pp collisions at s=8 TeV

2015 ◽  
Vol 746 ◽  
pp. 132-153 ◽  
Author(s):  
V. Khachatryan ◽  
A.M. Sirunyan ◽  
A. Tumasyan ◽  
W. Adam ◽  
T. Bergauer ◽  
...  
Keyword(s):  
Cross Section ◽  
Cross Section Ratio ◽  
Pp Collisions ◽  
Section Ratio ◽  
The Cross ◽  
8 Tev
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