Determination of primary energy of jets by the transverse momentum and angular distributions of the secondary

1965 ◽  
Vol 36 (4) ◽  
pp. 1376-1379 ◽  
Author(s):  
K. Imaeda
Keyword(s):  
Transverse Momentum ◽  
Primary Energy ◽  
Angular Distributions

Energy determination of electromagnetic cascades recorded in nuclear emulsions

1968 ◽  
Vol 46 (10) ◽  
pp. S283-S286 ◽  
Author(s):  
W. Enge
Keyword(s):  
Primary Energy ◽  
Angular Distributions ◽  
Nuclear Emulsions ◽  
The Core ◽  
Energy Determination

Five electromagnetic cascades of energies 835, 820, 300, 160, and 85 GeV were measured in the emulsions of an emulsion–tungsten stack. For small angles the integral angular distributions of the electrons are shown to be functions of the product E0 × θ (GeV × rad), where E0 is the primary energy of the cascades and θ is the angle up to which electrons were accepted. This is analogous to the well-known fact that the integral radial distributions depend on E0 × R (GeV × r.l.) in the core of the cascade, where R is the radius of a circle inside which were electrons.

scholarly journals Constraints on neutrino non-standard interactions from LHC data with large missing transverse momentum

2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
DianYu Liu ◽  
ChuanLe Sun ◽  
Jun Gao
Keyword(s):  
Transverse Momentum ◽  
Neutral Current ◽  
Data Sets ◽  
Leading Order ◽  
Missing Transverse Momentum ◽  
Upper Limit ◽  
Theoretical Predictions ◽  
Parton Showering ◽  
Single Jet

Abstract The possible non-standard interactions (NSIs) of neutrinos with matter plays important role in the global determination of neutrino properties. In our study we select various data sets from LHC measurements at 13 TeV with integrated luminosities of 35 ∼ 139 fb−1, including production of a single jet, photon, W/Z boson, or charged lepton accompanied with large missing transverse momentum. We derive constraints on neutral-current NSIs with quarks imposed by different data sets in a framework of either effective operators or simplified Z′ models. We use theoretical predictions of productions induced by NSIs at next-to-leading order in QCD matched with parton showering which stabilize the theory predictions and result in more robust constraints. In a simplified Z′ model we obtain a 95% CLs upper limit on the conventional NSI strength ϵ of 0.042 and 0.0028 for a Z′ mass of 0.2 and 2 TeV respectively. We also discuss possible improvements from future runs of LHC with higher luminosities.

scholarly journals Back-to-Back Isolated Photon-Quarkonium Production at the LHC and the Transverse-Momentum-Dependent Distributions of the Gluons in the Proton

2016 ◽  
Vol 40 ◽  
pp. 1660015 ◽  
Author(s):  
J. P. Lansberg
Keyword(s):  
Transverse Momentum ◽  
Experimental Determination ◽  
Heavy Quarkonia ◽  
Proton Proton ◽  
Transverse Momentum Dependent ◽  
Proton Collisions ◽  
Quarkonium Production ◽  
Linearly Polarized ◽  
Proton Proton Collisions

The study of isolated heavy quarkonia, such as [Formula: see text] and [Formula: see text], produced in association with a photon in proton-proton collisions at the LHC, is probably the optimal way to get right away a first experimental determination of two gluon transverse-momentum-dependent distribution (TMDs) in an unpolarized proton, [Formula: see text] and [Formula: see text], the latter giving the distribution of linearly polarized gluons. To substantiante this, we calculate the transverse-momentum-dependent effects that arise in the process under study and discuss the feasibility of their measurements.

scholarly journals Nonperturbative Uncertainties on the Transverse Momentum Distribution of Electroweak Bosons and on the Determination of the W Boson Mass at the LHC

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Giuseppe Bozzi ◽  
Andrea Signori
Keyword(s):  
Transverse Momentum ◽  
W Boson ◽  
Direct Determination ◽  
Boson Mass ◽  
Proton Proton ◽  
Theoretical Predictions ◽  
Quark Transverse Momentum ◽  
The Impact ◽  
Proton Proton Collisions

In this contribution we present an overview of recent results concerning the impact of a possible flavour dependence of the intrinsic quark transverse momentum on electroweak observables. In particular, we focus on the qT spectrum of electroweak gauge bosons produced in proton-proton collisions at the LHC and on the direct determination of the W boson mass. We show that these effects are comparable in size to other nonperturbative effects commonly included in phenomenological analyses and should thus be included in precise theoretical predictions for present and future hadron colliders.

scholarly journals Determination of charged Higgs couplings at the LHC

2014 ◽  
Vol 29 (13) ◽  
pp. 1430013 ◽  
Author(s):  
Xue Gong ◽  
Zong-Guo Si ◽  
Shuo Yang ◽  
Ya-Juan Zheng
Keyword(s):  
Top Quark ◽  
Angular Distributions ◽  
Spin Effects ◽  
Associated Production ◽  
Quark Spin ◽  
Charged Higgs

We review the study of the charged Higgs and top quark associated production at the LHC with the presence of an additional scalar doublet. Top quark spin effects are related to the Higgs fermion couplings through this process. The angular distributions with respect to top quark spin turns out to be distinctive observables to study the Htb interaction in different models.

scholarly journals A New Energy Level in 20Ne at 10·31 MeV

1964 ◽  
Vol 17 (1) ◽  
pp. 56 ◽  
Author(s):  
DG Sargood ◽  
GD Putt
Keyword(s):  
Energy Level ◽  
Neutron Energy ◽  
Gamma Ray ◽  
Angular Distributions ◽  
New Energy ◽  
State Spin ◽  
Gamma Decay ◽  
Coincidence Measurements ◽  
Made In

Neutron-gamma-ray coincidence measurements have been made in the reaction 19F(d,ny),oNe at bombarding energies between 500 and 700 keV. Time offlight determination of neutron energy indicates a new energy level in .oNe at lO� 31 �O' 07 MeV. From angular distributions of the neutrons, and observation of the gamma -decay spectrum of the 10.31 MeV state, spin and parity of 1 + are inferred for this state.

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