Correlations Between High Transverse Momentum Hadrons in [Greek Letter Pi]±p, Kp̄ and Pp Collisions at 200 GeV/c PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Correlations Between High Transverse Momentum Hadrons in [Greek Letter Pi]±p, Kp̄ and Pp Collisions at 200 GeV/c PDF full book. Access full book title Correlations Between High Transverse Momentum Hadrons in [Greek Letter Pi]±p, Kp̄ and Pp Collisions at 200 GeV/c by Robert Walter Stanek. Download full books in PDF and EPUB format.
![Correlations Between High Transverse Momentum Hadrons in [Greek Letter Pi]±p, Kp̄ and Pp Collisions at 200 GeV/c PDF](https://books.google.com/books/content/images/frontcover/iHz0ygAACAAJ?fife=w150-h200)
Author: Robert Walter Stanek
Publisher:
ISBN:
Category : Hadrons
Languages : en
Pages : 458
Get Book Here
Book Description
![Correlations Between High Transverse Momentum Hadrons in [Greek Letter Pi]±p, Kp̄ and Pp Collisions at 200 GeV/c PDF](https://books.google.com/books/content/images/frontcover/iHz0ygAACAAJ?fife=w80-h100)
Author: Robert Walter Stanek
Publisher:
ISBN:
Category : Hadrons
Languages : en
Pages : 458
Get Book Here
Book Description
![Charged Particle Production at High Transverse Momentum in 200 GeV/c Pp, [Greek Letter Pi]+p and [Greek Letter Pi]-p Collisions PDF](https://books.google.com/books/content/images/frontcover/XphEOAAACAAJ?fife=w80-h100)
Author: Michael Joseph Medinnis
Publisher:
ISBN:
Category : Particles (Nuclear physics)
Languages : en
Pages : 272
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
The STAR collaboration at RHIC presents measurements of J/[psi] → e+e− at mid-rapidity and high transverse momentum (p{sub T} > 5 GeV/c) in p+p and central Cu+Cu collisions at √sNN = 200 GeV. The inclusive J/[psi] production cross section for Cu+Cu collisions is found to be consistent at high p{sub T} with the binary collision-scaled cross section for p+p collisions, in contrast to previous measurements at lower p{sub T}, where a suppression of J/[psi] production is observed relative to the expectation from binary scaling. Azimuthal correlations of J/[psi] with charged hadrons in p+p collisions provide an estimate of the contribution of B-meson decays to J/[psi] production of 13% ± 5%.
![Correlations in Transverse Momentum in [pi]+p and K+p Collisions at 250 GeV/ca[superscript] PDF](https://books.google.com/books/content/images/frontcover/DdHYtgAACAAJ?fife=w80-h100)
Author: Jan Czyzewski
Publisher:
ISBN:
Category :
Languages : en
Pages : 6
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 5
Get Book Here
Book Description
Azimuthal correlations for large transverse momentum charged hadrons have been measured over a wide pseudo-rapidity range and full azimuth in Au+Au and p+p collisions at = (square root)s{sub NN} = 200 GeV. The small-angle correlations observed in p+p collisions and at all centralities of Au+Au collisions are characteristic of hard-scattering processes already observed in elementary collisions. A strong back-to-back correlation exists for p+p and peripheral Au + Au. In contrast, the back-to-back correlations are reduced considerably in the most central Au+Au collisions, indicating substantial interaction as the hard-scattered partons or their fragmentation products traverse the medium.
Author: James Lucas Drachenberg
Publisher:
ISBN:
Category :
Languages : en
Pages :
Get Book Here
Book Description
One unresolved question in hadronic physics is the origin of large transverse single-spin asymmetries, AN, observed in hadron production from high-energy polarized-proton collisions. Collinear perturbative Quantum Chromodynamics (pQCD) predicts that AN should scale with the quark mass, however, experiments have since reported large AN for inclusive hadron production. Recent measurements from RHIC experiments show examples of these asymmetries at forward angles in a kinematic region where pQCD cross-section calculations reasonably agree with measured cross-sections. Disentangling dynamical contributions to AN from hadro-production requires moving beyond inclusive measurements. One possibility is to investigate asymmetries in two-particle correlations due to Interference Fragmentation Functions (IFF) and the Sivers effect. In 2008, RHIC dedicated a portion of the run to transversely polarized proton collisions at sqrt(s) = 200 GeV. STAR was equipped with a Foward Meson Spectrometer (FMS) and a Forward Time Projection Chamber (FTPC), overlapping in the pseudorapidity range of 2.5 eta & lt; 4. By analyzing neutral pions with the FMS correlated with charged particles from the FTPC, correlation asymmetries can be measured at kinematics where large inclusive asymmetries have been measured. Correlations are measured for pi^0's with 2 & lt; pT, pi^0 & lt; 5 GeV/c and associated charged particles in two ranges of transverse momentum: 1 & lt; pT, ch & lt; 2 GeV/c and 0.5 & lt; pT, ch & lt; 1 GeV/c. IFF and Sivers asymmetries manifest themselves through the correlation of two particles from the same jet. These events are selected through a cut on the pair radius, delta R. Gain non-uniformities and electronics failures have resulted in large holes in trigger acceptance and associated particle acceptance, respectively. This non-uniform acceptance allows the Sivers and IFF effects to mix and distort the raw asymmetries. Techniques are developed to measure this leak-through by means of unpolarized yields and event weighting. They result in small corrections to the asymmetries. IFF and Sivers asymmetries both for xF 0 and for xF & lt; 0 are reported for forward-angle pi^0-charged particle correlations from polarized-proton collisions at sqrt(s) = 200 GeV. Asymmetries are shown corrected for full underlying-event and pileup backgrounds, as well as corrected only for pile-up contributions. It appears the asymmetries are less sensitive to delta R when corrected for the full underlying-event background. Unfortunately, statistics limitations preclude a firm conclusion.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 6
Get Book Here
Book Description
PHENIX has measured the transverse momentum (pT) spectra and two particle angular correlations for high pT particles in d+Au collisions at psNN=200 GeV using the RHIC Year-2008 run data. The azimuthal angle correlations for two particles with a large rapidity gap exhibit a ridge-like structure. Using the pi-0s reconstructed in the EMCal, we have successfully extended the pT reach of the correlation up to 8 GeV/c. We find that the azimuthal anisotropy of hadrons found at low pT persists up to 6 GeV/c with a significant centrality and pT dependence, similar to what was observed in A+A collisions.
Author: Simone Schuchmann
Publisher: Springer
ISBN: 3319434586
Category : Science
Languages : en
Pages : 216
Get Book Here
Book Description
This thesis offers an excellent, comprehensive introduction to the physics of the quark–gluon plasma. It clearly explains the connection between theory and experiment, making the topic accessible to non-specialists in this field. The experimental work, which contributes significantly to our understanding of the quark–gluon plasma, is described in great detail. The results described in the final chapters of the thesis provide interesting new ideas about the connection between proton-proton and Pb-Pb collisions. Simone Schuchmann received the 'ALICE Thesis Award 2016' for this excellent work.
![High Transverse Momentum [pi] ̊production from [pi] ̄and P Beams at 530 GeV/c on Be and Cu PDF](https://books.google.com/books/content/images/frontcover/V1lrIAAACAAJ?fife=w80-h100)
Author: John Philip Mansour
Publisher:
ISBN:
Category :
Languages : en
Pages : 262
Get Book Here
Book Description
Author: Keith Landry
Publisher:
ISBN:
Category :
Languages : en
Pages : 168
Get Book Here
Book Description
The transversity distribution, $h_1(x)$, of a transversely polarized proton describes the probability of partons with polarization parallel to the parent proton, carrying a momentum fraction $x$ of the parent proton. This distribution is fundamental for our understanding of the proton spin structure but still very much unknown for values of $x$ larger than about 0.15. We study transversely spin-polarized proton collisions at $\sqrt{s}=200$ GeV from STAR, because polarized p+p collisions at RHIC can access this $x$ region and, with a higher scale and transverse momentum, probe a different kinematic regime than SIDIS. We find sizable spin asymmetries in di-hadron correlations, which can be used to directly probe the transversity distribution of quarks inside protons because they arise from a transversely spin polarized quark fragmenting into two hadrons by the Interference Fragmentation Function.
