CERN Accelerating science

CERN Document Server 264 записей найдено  1 - 10следующийконец  перейти к записи: Поиск длился 0.71 секунд. 
1.
First Measurement of the <math display="inline"><mo stretchy="false">|</mo><mi>t</mi><mo stretchy="false">|</mo></math> Dependence of Incoherent <math display="inline"><mi>J</mi><mo>/</mo><mi>ψ</mi></math> Photonuclear Production / ALICE Collaboration
The first measurement of the cross section for incoherent photonuclear production of J/$\psi$ vector meson as a function of the Mandelstam $|t|$ variable is presented. The measurement was carried out with the ALICE detector at midrapidity, $|y|<0.8$, using ultra-peripheral collisions of Pb nuclei at a centre-of-mass energy per nucleon pair $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV. [...]
arXiv:2305.06169; CERN-EP-2023-080.- Geneva : CERN, 2024-04-19 - 19 p. - Published in : Phys. Rev. Lett. 132 (2024) 162302 Draft (restricted): PDF; Fulltext: 2305.06169 - PDF; Publication - PDF;
2.
First polarisation measurement of coherently photoproduced J/$\psi$ in ultra-peripheral Pb$-$Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV / Acharya, Shreyasi (Clermont-Ferrand U.) ; Adamova, Dagmar (Rez, Nucl. Phys. Inst.) ; Adler, Alexander (Goethe U., Frankfurt, Inst. Inform.) ; Aglieri Rinella, Gianluca (CERN) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) ; Ahuja, Ishaan (Kosice U.) et al. /ALICE
The first measurement of the polarisation of coherently photoproduced J/$\psi$ mesons in ultra-peripheral Pb$-$Pb collisions, using data at $\sqrt{s_{\rm NN}} = 5.02$ TeV , is presented. The J/$\psi$ meson is measured via its dimuon decay channel in the forward rapidity interval $-4.0 < y < -2.5$ using the ALICE detector at the CERN LHC. [...]
arXiv:2304.10928; CERN-EP-2023-068.- Geneva : CERN, 2023 - 19 p. Draft (restricted): PDF; Fulltext: PDF;
3.
Exclusive and dissociative J/$\psi$ photoproduction, and exclusive dimuon production, in p$-$Pb collisions at $sqrt{s_{\mathrm{NN}}} = 8.16$ TeV / Acharya, Shreyasi (Clermont-Ferrand U.) ; Adamova, Dagmar (Rez, Nucl. Phys. Inst.) ; Adler, Alexander (Frankfurt U.) ; Aglieri Rinella, Gianluca (CERN) ; Agnello, Michelangelo (INFN, Turin ; Turin Polytechnic) ; Agrawal, Neelima (INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) ; Ahuja, Ishaan (Kosice U.) et al. /ALICE
The ALICE Collaboration reports three measurements in ultra-peripheral proton$-$lead collisions at forward rapidity. The exclusive two-photon process $\gamma \gamma \rightarrow \mu^+ \mu^-$ and the exclusive photoproduction of J/$\psi$ are studied. [...]
arXiv:2304.12403; CERN-EP-2023-059.- Geneva : CERN, 2023-12-01 - 29 p. - Published in : Phys. Rev. D 108 (2023) 112004 Draft (restricted): PDF; Fulltext: 2304.12403 - PDF; Publication - PDF;
4.
Measurements of inclusive J/$\psi$ production at midrapidity and forward rapidity in Pb$-$Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV / ALICE Collaboration
The measurements of the inclusive J/$\psi$ yield at midrapidity ($|y| < 0.9$ and forward rapidity ($2.5 < y < 4$) in Pb$-$Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV with the ALICE detector at the LHC are reported. The inclusive J/$\psi$ production yields and nuclear modification factors, $R_{\rm AA}$, are measured as a function of the collision centrality, J/$\psi$ transverse momentum ($p_{\rm T}$), and rapidity. [...]
arXiv:2303.13361; CERN-EP-2023-054.- Geneva : CERN, 2024-01-12 - 20 p. - Published in : Phys. Lett. B 849 (2024) 138451 Draft (restricted): PDF; Fulltext: 2303.13361 - PDF; Publication - PDF;
5.
Measurement of inclusive J/$\psi$ pair production cross section in pp collisions at $\sqrt{s} = 13$ TeV / ALICE Collaboration
The production cross section of inclusive J/$\psi$ pairs in pp collisions at a centre-of-mass energy $\sqrt{s} = 13$ TeV is measured with ALICE. The measurement is performed for J/$\psi$ in the rapidity interval $2.5 < y < 4.0$ and for transverse momentum $p_{\rm T} > 0$. [...]
arXiv:2303.13431; CERN-EP-2023-053.- Geneva : CERN, 2023-10-23 - 13 p. - Published in : Phys. Rev. C 108 (2023) 045203 Draft (restricted): PDF; Fulltext: 2303.13431 - PDF; Publication - PDF;
6.
Study of the p–p–K$^{+}$ and p–p–K$^{-}$ dynamics using the femtoscopy technique / ALICE Collaboration
The interactions of kaons (K) and antikaons ($\mathrm{\overline{K}}$) with few nucleons (N) were studied so far using kaonic atom data and measurements of kaon production and interaction yields in nuclei. Some details of the three-body KNN and $\mathrm{\overline{K}}$NN dynamics are still not well understood, mainly due to the overlap with multi-nucleon interactions in nuclei. [...]
arXiv:2303.13448; CERN-EP-2023-051.- Geneva : CERN, 2023-12-18 - 19 p. - Published in : Eur. Phys. J. A 59 (2023) 298 Draft (restricted): PDF; Fulltext: document - PDF; 2303.13448 - PDF;
7.
Higher-order correlations between different moments of two flow amplitudes in Pb$-$Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV / ALICE Collaboration
The correlations between different moments of two flow amplitudes, extracted with the recently developed asymmetric cumulants, are measured in Pb$-$Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV recorded by the ALICE detector at the LHC. The magnitudes of the measured observables show a dependence on the different moments as well as on the collision centrality, indicating the presence of non-linear response in all even moments up to the eighth. [...]
arXiv:2303.13414; CERN-EP-2023-047.- Geneva : CERN, 2023-11-14 - 21 p. - Published in : Phys. Rev. C 108 (2023) 055203 Draft (restricted): PDF; Fulltext: 2303.13414 - PDF; Publication - PDF;
8.
Measurement of the angle between jet axes in Pb-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV$ / Acharya, Shreyasi (Clermont-Ferrand U.) ; Adamova, Dagmar (Rez, Nucl. Phys. Inst.) ; Adler, Alexander (Goethe U., Frankfurt, Inst. Inform.) ; Aglieri Rinella, Gianluca (CERN) ; Agnello, Michelangelo (Turin Polytechnic) ; Agrawal, Neelima (INFN, Bologna) ; Ahammed, Zubayer (Calcutta, VECC) ; Ahmad, Shakeel (Aligarh Muslim U.) ; Ahn, Sang Un (KISTI, Daejeon) ; Ahuja, Ishaan (Kosice U.) et al.
This letter presents the first measurement of the angle between different jet axes (denoted as ${\Delta}R$) in Pb$-$Pb collisions. The measurement is carried out in the 0$-$10% most-central events at $\sqrt{s_ {\rm NN}} = 5.02$ TeV. [...]
arXiv:2303.13347; CERN-EP-2023-046.- Geneva : CERN, 2023 - 17 p. Draft (restricted): PDF; Fulltext: SupplementalMaterial - PDF; 2303.13347 - PDF;
9.
Data-driven precision determination of the material budget in ALICE / ALICE Collaboration
The knowledge of the material budget with a high precision is fundamental for measurements of direct photon production using the photon conversion method due to its direct impact on the total systematic uncertainty. Moreover, it influences many aspects of the charged-particle reconstruction performance. [...]
arXiv:2303.15317; CERN-EP-2023-043.- Geneva : CERN, 2023-11-30 - 22 p. - Published in : JINST 18 (2023) P11032 Draft (restricted): PDF; Fulltext: Fulltext - PDF; document - PDF; 2303.15317 - PDF;
10.
Inclusive and multiplicity dependent production of electrons from heavy-flavour hadron decays in pp and p-Pb collisions / ALICE Collaboration
Measurements of the production of electrons from heavy-flavour hadron decays in pp collisions at $\sqrt{s} = {13~\rm TeV}$ at midrapidity with the ALICE detector are presented down to a transverse momentum ($p_{\rm T}$) of 0.2 GeV$/c$ and up to $p_{\rm T} = 35~{\rm GeV/}c$, which is the largest momentum range probed for inclusive electron measurements in ALICE. In p$-$Pb collisions, the production cross section and the nuclear modification factor of electrons from heavy-flavour hadron decays are measured in the $p_{\rm T}$ range 0.5 $< p_{\rm T} <$ 26 GeV$/c$ at $\sqrt{s_{\textrm{NN}}}=8.16~{\rm TeV}$. [...]
arXiv:2303.13349; CERN-EP-2023-041.- Geneva : CERN, 2023-08-02 - 46 p. - Published in : JHEP 2308 (2023) 006 Draft (restricted): PDF; Fulltext: 2303.13349 - PDF; document - PDF;

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