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ATLAS and CMS observe simultaneous production of four top quarks（图）
ATLAS CMS 四顶夸克 同时产生
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2023/5/26
Today, at the Moriond conference, the ATLAS and CMS collaborations have both presented the observation of a very rare process: the simultaneous production of four top quarks. They were observed using ...
Vector Meson Production in Coherent Hadronic Interactions: An update on predictions for RHIC and LHC
Coherent Hadronic Interactions Vector Meson Production
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2011/7/21
In this letter we update our predictions for the photoproduction of vector mesons in coherent $pp$ and $AA$ collisions at RHIC and LHC energies using the color dipole approach and the Color Glass Cond...
Photon-tagged heavy meson production in high energy nuclear collisions
Photon-tagged heavy meson high energy nuclear collisions
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2011/7/21
We study the photon-triggered light and heavy meson production in both p+p and A+A collisions. We find that a parton energy loss approach that successfully describes inclusive hadron attenuation in nu...
Single Spin Asymmetries in Charged Pion Production from Semi-Inclusive Deep Inelastic Scattering on a Transversely Polarized $^3$He Target
Transversely Polarized $^3$He Target Charged Pion Production
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2011/7/21
We report the first measurement of target single spin asymmetries in the semi-inclusive $^3{He}(e,e'\pi^\pm)X$ reaction on a transversely polarized target. The experiment, conducted at Jefferson Lab u...
Direct Photon Production in Proton-Nucleus and Nucleus-Nucleus Collisions
direct photons nuclear suppression gluon shadowing
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2011/7/21
Prompt photons produced in a hard reaction are not accompanied with any final state interaction, either energy loss or absorption. Therefore, besides the Cronin enhancement at medium transverse moment...
The thermal model on the verge of the ultimate test: particle production in Pb-Pb collisions at the LHC
ultimate test thermal model on the verge Pb-Pb collisions
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2011/7/21
We investigate the production of hadrons in nuclear collisions within the framework of the thermal (or statistical hadronization) model. We discuss both the ligh-quark hadrons as well as charmonium an...
Strangeness Production close to Threshold in Proton-Nucleus and Heavy-Ion Collisions
Production close to Threshold Proton-Nucleus Heavy-Ion Collisions
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2011/7/20
We discuss strangeness production close to threshold in p+A and A+A collision. Comparing the body of available K+, K0, K-, and Lambda data with the IQMD transport code and for some key observables as ...
The thermal model on the verge of the ultimate test: particle production in Pb-Pb collisions at the LHC
thermal model ultimate Pb-Pb collisions LHC
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2011/7/22
We investigate the production of hadrons in nuclear collisions within the framework of the thermal (or statistical hadronization) model. We discuss both the ligh-quark hadrons as well as charmonium an...
Production of Neutral Pions and Eta-mesons in pp Collisions Measured with ALICE
Neutral Pions Eta-mesons pp Collisions ALICE
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2011/7/21
Invariant cross sections for neutral pions and eta mesons in pp collisions at sqrt(s) = 0.9, 2.76, and 7 TeV were measured by the ALICE detector at the Large Hadron Collider. Next-to-leading order (NL...
Identified Hadron Production from the RHIC Beam Energy Scan
Identified Hadron Production RHIC Beam Energy Scan
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2011/7/20
A current focus at RHIC is the Beam Energy Scan to study the QCD phase diagram -- temperature ($T$) vs. baryon chemical potential ($\mu_{B}$). The STAR experiment has collected data for Au+Au collisio...
Vector Meson Production in Coherent Hadronic Interactions: An update on predictions for RHIC and LHC
Vector Meson Coherent Hadronic Interactions update RHIC LHC
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2011/7/21
In this letter we update our predictions for the photoproduction of vector mesons in coherent $pp$ and $AA$ collisions at RHIC and LHC energies using the color dipole approach and the Color Glass Cond...
Photon-tagged heavy meson production in high energy nuclear collisions
Photon-tagged heavy meson production high energy nuclear collisions
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2011/7/21
We study the photon-triggered light and heavy meson production in both p+p and A+A collisions. We find that a parton energy loss approach that successfully describes inclusive hadron attenuation in nu...
Heavy-flavour production in pp and Pb-Pb collisions at ALICE
Heavy-flavour production pp Pb-Pb collisions ALICE
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2011/7/21
In this contribution, recent ALICE measurements of the production cross section of single electrons, single muons and open charmed mesons in proton-proton collisions at sqrt(s) = 7 TeV are reported. T...
Gluon shadowing and hadron production in heavy-ion collisions at LHC
Gluon shadowing hadron production heavy-ion collisions LHC
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2010/12/29
The recently published first measurement of charged hadron multiplicity density at mid-rapidity $dN_{ch}/d\eta=1584 \pm 4 ({\rm stat.}) \pm 76 ({\rm sys.})$ in central $Pb+Pb$ collisions at $\sqrt{s} ...
Heavy-flavour production in hot quark matter
Heavy-flavour production hot quark matter
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2010/12/29
Recent results from RHIC and first measurements from the ALICE experiment at the CERN-Large Hadron Collider (LHC) on open heavy-flavour are presented. We focus on RHIC measurements of single electrons...