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Photon production

Direct photon production in d+Au collisions at √sNN=200 GeV

Direct photon production in d+Au collisions at √sNN=200 GeV

... summed with those of the d+Au data points. The sums are shown as bars and bands, respectively. The uncer- tainty of T dA for d+Au is indicated by the box located at the right in Fig. 3. R dA is consistent with unity ...

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Measurement of direct photon production in p + p collisions at $\sqrt{s}$ = 200 GeV

Measurement of direct photon production in p + p collisions at $\sqrt{s}$ = 200 GeV

... direct photon production is de- scribed, at high energy and high momentum transfer, by perturbative Quantum Chromodynamics ...the photon be isolated from parton jet activity can emphasize the Compton ...

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HARD PHOTON PRODUCTION IN NUCLEUS-NUCLEUS COLLISIONS AT 30 MeV/u AND 44 MeV/u

HARD PHOTON PRODUCTION IN NUCLEUS-NUCLEUS COLLISIONS AT 30 MeV/u AND 44 MeV/u

... Experiments on high energy photon production in nucleus-nucleus collisions have been repor- ted very recently /1,2,3/ and different reaction mechanisms have been proposed to predict the[r] ...

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Direct photon production in Pb-Pb collisions at $\sqrt{s_\rm{NN}}$ = 2.76 TeV

Direct photon production in Pb-Pb collisions at $\sqrt{s_\rm{NN}}$ = 2.76 TeV

... direct photon spectra were measured for the 0–20%, 20–40%, and 40–80% centrality ...Direct photon spectra down to p T ≈ 1 GeV/c could be extracted for the 20–40% and 0–20% centrality ...direct photon ...

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Center of mass energy and system-size dependence of photon production at forward rapidity at RHIC

Center of mass energy and system-size dependence of photon production at forward rapidity at RHIC

... Summary Photon multiplicity distributions are measured at forward rapidity ...the photon multiplicity detector in the STAR experiment at ...the photon yield increases with decreasing |η| (towards ...

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Direct-Photon Production in p+p Collisions at sqrt(s)=200 GeV at Midrapidity

Direct-Photon Production in p+p Collisions at sqrt(s)=200 GeV at Midrapidity

... the photon is accompanied by jet fragments so that observing photons isolated from jets enhances the contribution from the fundamental 2-to-2 ...direct photon production in pQCD, and such ...

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Centrality, rapidity, and transverse momentum dependence of isolated prompt photon production in lead-lead collisions at

Centrality, rapidity, and transverse momentum dependence of isolated prompt photon production in lead-lead collisions at

... Their production rates are therefore expected to be directly sensitive to the overall thickness of the colliding nuclear ...]. Photon rates are also sensitive to final-state interactions in the hot and ...

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Prompt Photon Production in p-A Collisions at LHC and the Extraction of Gluon Shadowing

Prompt Photon Production in p-A Collisions at LHC and the Extraction of Gluon Shadowing

... 2- SubaTech, Universit´e de Nantes, Ecole des Mines de Nantes, IN2P3/CNRS 4 rue Kastler, 44307 Nantes, France A report is given on the study of using prompt photon production at the LHC to probe the gluon ...

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Direct photon production at low transverse momentum in proton-proton collisions at $\mathbf{\sqrt{s}=2.76}$ and 8 TeV

Direct photon production at low transverse momentum in proton-proton collisions at $\mathbf{\sqrt{s}=2.76}$ and 8 TeV

... direct photon production in pp collisions at √ s = ...Direct photon spectra, or their upper limits at 90% ...direct photon excess ratio R γ , which quantifies the ratio of inclusive photons ...

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Isolated photon production in p-Pb collisions at √(s_NN ) = 5.02 TeV with the ALICE experiment at the LHC

Isolated photon production in p-Pb collisions at √(s_NN ) = 5.02 TeV with the ALICE experiment at the LHC

... Their production is corre- lated to the initial parton distribution function (in proton) or nuclear parton distribution functions (in lead ...isolated photon measurements, already performed at the LHC ...

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Centrality dependence of low-momentum direct-photon production in Au plus Au collisions at root s(NN)=200 GeV

Centrality dependence of low-momentum direct-photon production in Au plus Au collisions at root s(NN)=200 GeV

... N coll -scaled pp fit FIG. 7. (Color online) Direct photon p T spectra for minimum-bias Au+Au collisions from this measurement (solid symbols) and Au+Au and p+p collisions (open symbols). Open circles and up ...

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Measurement of prompt photon production in $\sqrt{s_\mathrm{NN}} = 8.16$ TeV $p$+Pb collisions with ATLAS

Measurement of prompt photon production in $\sqrt{s_\mathrm{NN}} = 8.16$ TeV $p$+Pb collisions with ATLAS

... loose requirements of Ref. [ 31 ] but fail certain components of the tight requirements, designed to mostly select background. The majority of signal photons are in the tight, isolated region, defined to be the signal ...

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Measurement of identified pi^0 and inclusive photon v_2 and implication to the direct photon production in sqrt(s_NN) = 200 GeV Au+Au collisions

Measurement of identified pi^0 and inclusive photon v_2 and implication to the direct photon production in sqrt(s_NN) = 200 GeV Au+Au collisions

... of photon candidates removed by this charge veto cut is about 15-25% depending on ...identified photon sample are studied with full detector Monte-Carlo simu- ...

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Measurement of isolated-photon plus two-jet production in $pp$ collisions at $\sqrt s=13$ TeV with the ATLAS detector

Measurement of isolated-photon plus two-jet production in $pp$ collisions at $\sqrt s=13$ TeV with the ATLAS detector

... prompt-photon production consists of multi-jet events where one jet typically contains a π 0 or η meson that carries most of the jet energy and is misidentified as a photon because it decays into an ...

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Two-Photon Holographic Stimulation of ReaChR

Two-Photon Holographic Stimulation of ReaChR

... optogenetic actuators and the limited number of channels contained in the micro-sized illumination volume renders 2P-optogenetics challenging. This has prompted the design of new 2P-illumination approaches for optimized ...

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t-channel unitarity and photon cross sections

t-channel unitarity and photon cross sections

... Key words: Unitarity, factorisation, photon cross sections, S matrix, DIS PACS: 13.85.Lg, 14.70.Bh, 13.60.Hb, 11.55.Bq, 11.55.J 1 Introduction The DIS and total cross section data [1–3] from HERA have opened new ...

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The Substantial Model Of The Photon

The Substantial Model Of The Photon

... the photon is nothing else than the averaged angular frequency of revolution of the electron cloud’s center during emission and quantum transition between two energy levels in an ...the photon consists of ...

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Denoising Two-Photon Calcium Imaging Data

Denoising Two-Photon Calcium Imaging Data

... Abstract Two-photon calcium imaging is now an important tool for in vivo imaging of biological systems. By enabling neuronal population imaging with subcellular resolution, this modality offers an approach for ...

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Leçon n°41 : Le photon : la particule et ses interactions avec la matière

Leçon n°41 : Le photon : la particule et ses interactions avec la matière

... =1eea (âu surer des reçôns de Mo ên eénÉra )L'hisb €de râ meÉnqrE@nrique êst cêdes appr'.âtônsmodernesd€raphysq raser.alomesfiodssemÈæiducreure ho oqes dê précsion.[r] ...

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Scalable photon splatting for global illumination

Scalable photon splatting for global illumination

... All results were obtained with a 1.2GHz Athlon processor, 512 Mb of memory and a GeForce3 graphic card. First, results in Ta- ble 1 are presented for a coarse solution (100 000 photons traced from the light sources) ...

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