scholarly journals Limits on neutral Higgs production in the forward region in pp collisions at \sqrt s = 7 TeV

2013 ◽  
Author(s):  
Philip James ILTEN
Keyword(s):  
Higgs Production ◽  
Pp Collisions ◽  
Forward Region

scholarly journals Large Rapidity Gap Method to Select Soft Diffraction Dissociation at the LHC

2016 ◽  
Vol 2016 ◽  
pp. 1-17 ◽  
Author(s):  
Emily Nurse ◽  
Sercan Sen
Keyword(s):  
Hadron Collider ◽  
Pp Collisions ◽  
Forward Region ◽  
Diffraction Dissociation ◽  
Proton Proton ◽  
Diffractive Dissociation ◽  
Diffractive Process ◽  
Quantum Numbers ◽  
Rapidity Gap ◽  
Zero Degree

In proton-proton (pp) collisions, any process involves exchanging the vacuum quantum numbers is known as diffractive process. A diffractive process with no largeQ2is called soft diffractive process. The diffractive processes are important for understanding nonperturbative QCD effects and they also constitute a significant fraction of the total pp cross section. The diffractive events are typically characterized by a region of the detector without particles, known as a rapidity gap. In order to observe diffractive events in this way, we consider the pseudorapidity acceptance in the forward region of the ATLAS and CMS detectors at the Large Hadron Collider (LHC) and discuss the methods to select soft diffractive dissociation for pp collisions ats=7 TeV. It is shown that, in the limited detector rapidity acceptance, it is possible to select diffractive dissociation events by requiring a rapidity gap in the event; however, without using forward detectors, it seems not possible to fully separate single and double diffractive dissociation events. The Zero Degree Calorimeters can be used to distinguish the type of the diffractive processes up to a certain extent.

scholarly journals Double Helicity Asymmetries of Forward Neutral Pions from s = 510 GeV pp Collisions at STAR

2016 ◽  
Vol 40 ◽  
pp. 1660024
Author(s):  
Christopher J. Dilks
Keyword(s):  
Electromagnetic Calorimeter ◽  
Beam Polarization ◽  
Gluon Polarization ◽  
Pp Collisions ◽  
Forward Region ◽  
Neutral Pions ◽  
Pseudorapidity Range ◽  
Integrated Luminosity

Longitudinally polarized [Formula: see text] scattering experiments provide access to gluon polarization via measurement of the double helicity asymmetry, [Formula: see text]. At the completion of the 2013 RHIC running period, a significant dataset of [Formula: see text]s corresponding to an integrated luminosity of 46 [Formula: see text] (2012) and 8 [Formula: see text] (2013) produced from polarized [Formula: see text] scattering at [Formula: see text] GeV with an average beam polarization of approximately [Formula: see text] was acquired. The [Formula: see text] kinematics were measured via isolation cones by the STAR Forward Meson Spectrometer, an electromagnetic calorimeter covering a forward pseudorapidity range of [Formula: see text]. The asymmetric [Formula: see text] subprocess becomes more dominant in this forward region than in the midrapidity region; furthermore, asymmetry measurements in the forward region are sensitive to low-[Formula: see text] gluons. Progress on [Formula: see text] determined from forward [Formula: see text] events, complementing previous midrapidity measurements, are presented.

Higgs production in pp collisions by double-pomeron exchange

1991 ◽  
Vol 256 (3-4) ◽  
pp. 540-546 ◽  
Author(s):  
A. Bialas ◽  
P.V. Landshoff
Keyword(s):  
Pomeron Exchange ◽  
Higgs Production ◽  
Pp Collisions

scholarly journals Forward Higgs production within high energy factorization in the heavy quark limit at next-to-leading order accuracy

2021 ◽  
Vol 81 (2) ◽  
Author(s):  
M. Hentschinski ◽  
K. Kutak ◽  
A. van Hameren
Keyword(s):  
Effective Action ◽  
High Energy ◽  
Higgs Production ◽  
Explicit Calculation ◽  
Leading Order ◽  
Forward Region ◽  
Transverse Momentum Dependent ◽  
Heavy Quark Limit ◽  
Proper Definition ◽  
Definition Of

AbstractWe use Lipatov’s high energy effective action to determine the next-to-leading order corrections to Higgs production in the forward region within high energy factorization making use of the infinite top mass limit. Our result is based on an explicit calculation of real corrections combined with virtual corrections determined earlier by Nefedov. As a new element we provide a proper definition of the desired next-to-leading order coefficient within the high energy effective action framework, extending a previously proposed prescription. We further propose a subtraction mechanism to achieve for this coefficient a stable cancellation of real and virtual infra-red singularities in the presence of external off-shell legs. Apart from its relevance for direct phenomenological studies, such as high energy resummation of Higgs $$+$$ + jet configurations, our result will be further of use for the study of transverse momentum dependent factorization in the high energy limit.

scholarly journals Measurement of the Z+b-jet cross-section in pp collisions at s $$ \sqrt{s} $$ = 7 TeV in the forward region

2015 ◽  
Vol 2015 (1) ◽  
Author(s):  
R. Aaij ◽  
◽  
B. Adeva ◽  
M. Adinolfi ◽  
A. Affolder ◽  
...  
Keyword(s):  
Cross Section ◽  
Pp Collisions ◽  
Forward Region
Sign in / Sign up

Export Citation Format

Share Document