CERN Accelerating science

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1.
Fast loss analysis with LHC diamond detectors in 2017 / Gorzawski, Arkadiusz (University of Malta (MT)) ; Redaelli, Stefano (CERN) ; Fuster Martinez, Nuria (CERN) ; Garcia Morales, Hector (University of London (GB)) ; Mereghetti, Alessio (CERN) ; Cai, Xu (Central China Normal University CCNU (CN)) ; Valentino, Gianluca (University of Malta (MT)) ; Appleby, Robert Barrie (University of Manchester (GB))
We presented some applications of the diamond BLM system installed in the LHC betatron collimation insertion. [...]
CERN-ACC-NOTE-2018-0041.
- 2018. - 29 p.
Full text
2.
MD1271: Effect of low frequency noise on the evolution of the emittance and halo population / Fitterer, Miriam (Fermi National Accelerator Lab. (US)) ; Stancari, Giulio (Fermi National Accelerator Lab. (US)) ; Valishev, Alexander (Fermi National Accelerator Lab. (US)) ; Bruce, Roderik (CERN) ; Hofle, Wolfgang (CERN) ; Hostettler, Michi (Universitaet Bern (CH)) ; Papadopoulou, Parthena Stefania (CERN) ; Papotti, Giulia (CERN) ; Papaphilippou, Yannis (CERN) ; Pellegrini, Dario (CERN) et al.
For the High Luminosity upgrade the β* in IR1 and IR5 will be further reduced compared to the current LHC [...]
CERN-ACC-NOTE-2018-0006.
- 2018. - 40 p.
Full text
3.
Measurement of electrons from beauty-hadron decays in p-Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV and Pb-Pb collisions at $\sqrt{s_{\rm NN}}=2.76$ TeV / ALICE Collaboration
The production of beauty hadrons was measured via semi-leptonic decays at mid-rapidity with the ALICE detector at the LHC in the transverse momentum interval $1<p_{\rm T}<8$ GeV/$c$ in minimum-bias p–Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV and in $1.3<p_{\rm T}<8$ GeV/$c$ in the 20% most central Pb-Pb collisions at $\sqrt{s_{\rm NN}}=2.76$ TeV. The pp reference spectra at $\sqrt{s}=5.02$ TeV and $\sqrt{s}=2.76$ TeV, needed for the calculation of the nuclear modification factors $R_{\rm pA}$ and $R_{\rm AA}$, were obtained by a pQCD-driven scaling of the cross section of electrons from beauty-hadron decays measured at $\sqrt{s}=7$ TeV. [...]
arXiv:1609.03898; CERN-EP-2016-222; CERN-EP-2016-222.- Geneva : CERN, 2017-07-11 - 34 p. - Published in : JHEP 07 (2017) 052 Draft (restricted): PDF; Fulltext: PDF; External link: Preprint
4.
Jet-like correlations with neutral pion triggers in pp and central Pb-Pb collisions at 2.76 TeV / ALICE Collaboration
We present measurements of two-particle correlations with neutral pion trigger particles of transverse momenta $8 < p_{\mathrm{T}}^{\rm trig} < 16~\mathrm{GeV}/c$ and associated charged particles of $0.5 < p_{\mathrm{T}}^{\rm assoc} < 10~\mathrm{GeV}/c$ versus the azimuthal angle difference $\Delta\varphi$ at midrapidity in pp and central Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV with ALICE. The new measurements exploit associated charged hadrons down to $0.5~\mathrm{GeV}/c$, which significantly extends our previous measurement that only used charged hadrons above $3~\mathrm{GeV}/c$. [...]
arXiv:1608.07201; CERN-EP-2016-195; CERN-EP-2016-195.- Geneva : CERN, 2016-12-10 - 13 p. - Published in : Phys. Lett. B 763 (2016) 238-250 Article from SCOAP3: PDF; Elsevier Open Access article: PDF; Fulltext: PDF; External link: Preprint
5.
Enhanced production of multi-strange hadrons in high-multiplicity proton–proton collisions / ALICE Collaboration
At sufficiently high temperature and energy density, nuclear matter undergoes a transition to a phase in which quarks and gluons are not confined: the quark–gluon plasma (QGP). Such an exotic state of strongly interacting quantum chromodynamics matter is produced in the laboratory in heavy nuclei high-energy collisions, where an enhanced production of strange hadrons is observed. [...]
arXiv:1606.07424; CERN-EP-2016-153.- Geneva : CERN, 2017-04-24 - 17 p. - Published in : Nature Phys. 13 (2017) 535-539 Fulltext: nphys4111 - PDF; arXiv:1606.07424 - PDF; Fulltext from Publisher: PDF; External links: Interactions.org article; Symmetry Magazine article; Rivet analyses reference
6.
Higher harmonic flow coefficients of identified hadrons in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV / ALICE Collaboration
The elliptic, triangular, quadrangular and pentagonal anisotropic flow coefficients for $\pi^{\pm}$, $\mathrm{K}^{\pm}$ and p+$\overline{\mathrm{p}}$ in Pb-Pb collisions at $\sqrt{s_\mathrm{{NN}}} = 2.76$ TeV were measured with the ALICE detector at the Large Hadron Collider. The results were obtained with the Scalar Product method, correlating the identified hadrons with reference particles from a different pseudorapidity region. [...]
arXiv:1606.06057; CERN-EP-2016-159; CERN-EP-2016-159.- Geneva : CERN, 2016-09-28 - 40 p. - Published in : JHEP 09 (2016) 164 Article from SCOAP3: PDF; Fulltext: PDF; Springer Open Access article: PDF;
7.
J/$\psi$ suppression at forward rapidity in Pb–Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV / ALICE Collaboration
The inclusive J/$\psi$ production has been studied in Pb-Pb and pp interactions at the centre-of-mass energy per nucleon-nucleon collision $\sqrt{s_{\rm NN}} = 5.02$ TeV, using the ALICE detector at the CERN LHC. The J/$\psi$ meson is detected, in the centre-of-mass rapidity interval $2.5<y<4$ and in the transverse momentum range $p_{\rm T}<12$ GeV/$c$, via its decay to a muon pair. [...]
arXiv:1606.08197; CERN-EP-2016-162.- Geneva : CERN, 2017-03-10 - 13 p. - Published in : Phys. Lett. B 766 (2017) 212-224 Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: PDF; External link: Fulltext
8.
Elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity in Pb–Pb collisions at $\sqrt{s_{\rm NN}}= 2.76$ TeV / ALICE Collaboration
The elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity ($|y| < 0.7$) is measured in Pb–Pb collisions at $\sqrt{s_{\rm NN}}= 2.76$ TeV with ALICE at the LHC. The particle azimuthal distribution with respect to the reaction plane can be parametrized with a Fourier expansion, where the second coefficient ($v_2$) represents the elliptic flow. [...]
arXiv:1606.00321; CERN-EP-2016-136; CERN-EP-2016-136.- Geneva : CERN, 2016-09-06 - 35 p. - Published in : JHEP 09 (2016) 028 Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: PDF; Springer Open Access article: PDF;
9.
Measurement of azimuthal correlations of D mesons and charged particles in pp collisions at $\sqrt{s}=7$ TeV and p-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV / ALICE Collaboration
The azimuthal correlations of D mesons and charged particles were measured with the ALICE detector in pp collisions at $\sqrt{s}=7$ TeV and p-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV at the Large Hadron Collider. D$^0$, D$^+$, and D$^{*+}$ mesons with transverse momentum $3 < p_{\rm T} < 16$ GeV/$c$ and rapidity in the nucleon-nucleon centre-of-mass system $|y_{\rm cms}| < 0.5$ (pp collisions) and $-0.96 < y_{\rm cms} < 0.04$ (p-Pb collisions) were correlated to charged particles with $p_{\rm T} > 0.3$ GeV/$c$. [...]
arXiv:1605.06963; CERN-EP-2016-129.- Geneva : CERN, 2017-04-17 - 29 p. - Published in : Eur. Phys. J. C 77 (2017) 245 Draft (restricted): PDF; Fulltext: PDF; Fulltext from Publisher: PDF; Springer Open Access article: PDF; External link: Preprint
10.
D-meson production in $p$–Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV and in $pp$ collisions at $\sqrt{s}=7$ TeV / ALICE Collaboration
The production cross sections of the prompt charmed mesons D$^0$, D$^+$, D$^{*+}$ and D$_{\rm s}^+$ were measured at mid-rapidity in p-Pb collisions at a centre-of-mass energy per nucleon pair $\sqrt{s_{\rm NN}}=5.02$ TeV with the ALICE detector at the LHC. D mesons were reconstruct ed from their decays D$^0\rightarrow {\rm K}^-\pi^+$, D$^+\rightarrow {\rm K}^-\pi^+\pi^+$, D$^{*+}\rightarrow {\rm D}^0\pi^+$, D$_s^+\rightarrow\phi\pi^+\rightarrow {\rm K}^-{\rm K}^+\pi^+$, and their charge conjugates. [...]
arXiv:1605.07569; CERN-EP-2016-127; CERN-EP-2016-127.- Geneva : CERN, 2016-11-23 - 31 p. - Published in : Phys. Rev. C 94 (2016) 054908 APS Open Access article: PDF; Draft (restricted): PDF; Fulltext: PDF; External link: Preprint

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