اشترك بالحزمة الذهبية واحصل على وصول غير محدود شمرا أكاديميا
تسجيل مستخدم جديدIdentifying the underlying physics of the ridge via 3-particle $Deltaeta-Deltaeta$ correlations
98
0
0.0
(
0
)
اسأل ChatGPT حول البحث
ﻻ يوجد ملخص باللغة العربية
We present the first results on 3-particle $Deltaeta$-$Deltaeta$ correlations in minimum bias $d$+Au, peripheral and central Au+Au collisions at $sqrt{{it s}_{NN}}$ = 200 GeV measured by the STAR experiment. The analysis technique is described in detail. The ridge particles, observed at large $Deltaeta$ in dihadron correlations in central Au+Au collisions, appear to be uniformly distributed over the measured $Deltaeta$-$Deltaeta$ region in 3-particle correlation. The results, together with theoretical models, should help further our understanding of the underlying physics of the ridge.
قيم البحث
اقرأ أيضاً
We present new results on 2-particle azimuthal ($Deltaphi$) correlation relative to event plane and 3-particle pseudorapidity ($Deltaeta$) correlation at mid-rapidity in Au+Au collisions at $sqrt{{it s}_{NN}}$ = 200 GeV, measured by the STAR experime
nt. While jet-like correlation is symmetric, ridge is found to be asymmetric when trigger particle azimuth is between in- and out-of-plane. The charge ordering properties between associated and trigger particles are exploited to separate jet-like and ridge contributions in 3-particle $Deltaeta$-$Deltaeta$ correlations. We found that like-sign triplets are dominated by ridge. The separated ridge, while narrow in $Deltaphi$, is extremely broad in $Deltaeta$. The ridge particles are not only uncorrelated to the trigger particle in $Deltaeta$, but also uncorrelated between themselves.
Measurements made by the ALICE Collaboration of single- and two-particle distributions in high-energy pp and p-Pb collisions are used to characterize the interactions in small collision systems, tune models of particle production in QCD, and serve as
a baseline for heavy-ion observables. The measurements of charged-particle multiplicity density, $langle dN_{ch}/detarangle$, and multiplicity distributions are shown in pp and p-Pb collisions, including data from the top center-of-mass energy achieved at the Large Hadron Collider (LHC), $sqrt{s}$ = 13 TeV. Two-particle angular correlations in p-Pb collisions are studied in detail to investigate long-range correlations in pseudorapidity which are reminiscent of structures previously thought unique to heavy-ion collisions.
Ultracold neutrons provide a unique tool for the study of neutron properties. An overview is given of the ultracold neutron (UCN) source at PSI, which produces the highest UCN intensities to fundamental physics experiments by exploiting the high inte
nsity proton beam in combination with the high UCN yield in solid deuterium at a temperature of 5K. We briefly list important fundamental physics results based on measurements with neutrons at PSI.
These reports present the results of the 2013 Community Summer Study of the APS Division of Particles and Fields (Snowmass 2013) on the future program of particle physics in the U.S. Chapter 3, on the Energy Frontier, discusses the program of researc
h with high-energy colliders. This area includes experiments on the Higgs boson, the electroweak and strong interactions, and the top quark. It also encompasses direct searches for new particles and interactions at high energy.
Two-particle azimuthal correlations of high-pT hadrons can serve as a probe of interactions of partons with the dense medium produced in high-energy heavy-ion collisions. First NA49 results on such correlations are presented for central and mid-centr
al Pb+Pb collisions at 158A GeV beam energy, for different centrality bins and charge combinations of trigger and associate particles. These results feature a flattened away-side peak in the most central collisions, which is consistent with expectations of the medium-interaction scenario. A comparison with CERES Pb+Au results at the same energy, as well as with PHENIX Au+Au results at the top RHIC energy, is provided.
سجل دخول لتتمكن من نشر تعليقات
التعليقات
جاري جلب التعليقات
سجل دخول لتتمكن من متابعة معايير البحث التي قمت باختيارها
