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ALICE Preprints

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2021-05-13
09:51
Measurement of K$^{*}$(892)$^{\mathrm{\pm}}$ production in inelastic pp collisions at the LHC / ALICE Collaboration
The first results on K$^{*}$(892)$^{\mathrm{\pm}}$ resonance production in inelastic pp collisions at LHC energies of $\sqrt{s} = 5.02$, 8, and 13 TeV are presented. [...]
arXiv:2105.05760 ; CERN-EP-2021-086. - 26 p.
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2021-05-13
09:51
Charged-particle multiplicity fluctuations in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV / ALICE Collaboration
Measurements of event-by-event fluctuations of charged-particle multiplicities in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV using the ALICE detector at the CERN Large Hadron Collider (LHC) are presented in the pseudorapidity range $|\eta|<0.8$ and transverse momentum $0.2 < p_{\rm T} < 2.0$ GeV/$c$. [...]
arXiv:2105.05745 ; CERN-EP-2021-089. - 23 p.
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2021-05-13
09:51
Kaon-proton strong interaction at low relative momentum via femtoscopy in Pb-Pb collisions at the LHC / ALICE Collaboration
In quantum scattering processes between two particles, aspects characterizing the strong and Coulomb forces can be observed in kinematic distributions of the particle pairs. [...]
arXiv:2105.05683 ; CERN-EP-2021-080. - 25 p.
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2021-05-13
09:51
Experimental evidence for an attractive p-$\phi$ interaction / ALICE Collaboration
This Letter presents the first experimental evidence of the attractive strong interaction between a proton and a $\phi$ meson. [...]
arXiv:2105.05578 ; CERN-EP-2021-081. - 18 p.
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2021-05-13
09:51
Measurement of the production cross section of prompt $\Xi^0_{\rm c}$ baryons at midrapidity in pp collisions at $\sqrt{s}$ = 5.02 TeV / ALICE Collaboration
The transverse momentum ($p_{\rm T}$) differential cross section of the charm-strange baryon $\Xi^0_{\rm c}$ is measured at midrapidity ($|y|<$ 0.5) via its semileptonic decay into ${\rm e^{+}}\Xi^{-}\nu_{\rm e}$ in pp collisions at $\sqrt{s}$ = 5.02 TeV with the ALICE detector at the LHC. [...]
arXiv:2105.05616 ; CERN-EP-2021-079. - 27 p.
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2021-05-11
10:41
Charged-particle multiplicity fluctuations in Pb–Pb collisions at $\sqrt{s_{\rm NN}$ = 2.76 TeV / ALICE Collaboration, CERN /ALICE
Measurements of event-by-event fluctuations of charged-particle multiplicities in Pb–Pb collisions at $\sqrt{s_{\rm NN}$ = 2.76 TeV using the ALICE detector at the CERN Large Hadron Collider (LHC) are presented in the pseudorapidity range |$\eta$| < 0.8 and transverse momentum 0.2 < $p_{\rm T}$ < 2.0 GeV/$c$. The amplitude of the fluctuations is expressed in terms of the variance normalized by the mean of the multiplicity distribution. [...]
CERN-EP-2021-089.- Geneva : CERN, 2021 Draft (restricted): PDF;

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2021-05-10
12:45
Charm-quark fragmentation fractions and production cross section at 4 midrapidity in pp collisions at the LHC / Acharya, Shreyasi (Calcutta, VECC) ; Adamova, Dagmar (Rez, Nucl. Phys. Inst.) ; Adler, Alexander (Goethe U., Frankfurt, Inst. Inform.) ; Adolfsson, Jonatan (Lund U.) ; 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) et al.
Recent $p_{\rm T}$-integrated cross section measurements of the ground-state charm mesons and baryons, $\mathrm{D^0}$, $\mathrm{D^+}$, $\mathrm{D_s^+}$, $\Lambda_\mathrm{c}^+$, and $\Xi_\mathrm{c}^0$, are used to evaluate the charm fragmentation fractions and production cross section per unit of rapidity at midrapidity ($|y|<0.5$), in pp collisions at $\sqrt{s} = 5.02$ TeV at the LHC. The latter is $\mathrm{d}\sigma^{\mathrm{c\overline{c}}}/\mathrm{d} y|_{|y| < 0.5}=1165\pm 44(\mathrm{stat})^{+134}_{-101}(\mathrm{syst}) \ \mu\mathrm{b}$. [...]
arXiv:2105.06335; CERN-EP-2021-088.- Geneva : CERN, 2021 - 19 p. Draft (restricted): PDF; Fulltext: PDF;

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2021-05-10
09:55
Measurement of K$^{*}$(892)$^{\pm}$ production in inelastic pp collisions at the LHC / ALICE Collaboration, CERN
The first results on K$^{*}$(892)$^{\pm}$ resonance production in inelastic pp collisions at LHC energies of $\sqrt{s}$ = 5.02, 8, and 13 TeV are presented. The K$^{*}$(892)$^{\pm}$ has been reconstructed via its hadronic decay channel K$^{*}$(892)$^{\pm} \rightarrow K^{0}_{S} + \pi^{\pm}$ with the ALICE detector. [...]
CERN-EP-2021-086.- Geneva : CERN, 2021 Draft (restricted): PDF;

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2021-05-07
16:45
Measurement of the cross sections of $\rm \Xi_{c}^{0}$ and $\rm \Xi_{c}^{+}$ baryons and of the branching-fraction ratio BR($\rm \Xi_{c}^{0} \rightarrow \Xi^{-}e^+ \nu$)/BR($\rm \Xi_{c}^{0} \rightarrow \Xi^{-} \pi^{+}$) in pp collisions at $\sqrt{s}$ = 13 TeV / Acharya, Shreyasi (Calcutta, VECC) ; Adamova, Dagmar (Rez, Nucl. Phys. Inst.) ; Adler, Alexander (Goethe U., Frankfurt, Inst. Inform.) ; Adolfsson, Jonatan (Lund U.) ; 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) et al.
The $p_{\rm T}$-differential cross sections of prompt charm-strange baryons $\rm \Xi_{c}^{0}$ and $\rm \Xi_{c}^{+}$ were measured at midrapidity (|y| < 0.5) in proton–proton (pp) collisions at a centre-of-mass energy $\sqrt{s}$ = 13 TeV with the ALICE detector at the LHC. The $\rm \Xi_{c}^{0}$ baryon was reconstructed via both the semileptonic decay ($\rm \Xi_{c}^{0} \rightarrow \Xi^{-}e^+ \nu$) and the hadronic decay ($\rm \Xi_{c}^{0} \rightarrow \Xi^{-} \pi^{+}$) channels. [...]
arXiv:2105.05187; CERN-EP-2021-084.- Geneva : CERN, 2021 - 17 p. Draft (restricted): PDF; Fulltext: PDF;

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2021-05-07
10:42
Investigating the role of strangeness in baryon-antibaryon annihilation at the LHC / Acharya, Shreyasi (Calcutta, VECC) ; Adamova, Dagmar (Rez, Nucl. Phys. Inst.) ; Adler, Alexander (Goethe U., Frankfurt, Inst. Inform.) ; Adolfsson, Jonatan (Lund U.) ; 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) et al.
Annihilation dynamics plays a fundamental role in the baryon-antibaryon interaction ($\rm{B}\mbox{-}\rm{\overline{B}}$) at low-energy and its strength and range are crucial in the assessment of possible baryon bound states. Experimental data on annihilation cross sections are available for the $\rm{p}\mbox{-}\rm{\overline{p}}$ system but not in the low relative momentum region. [...]
arXiv:2105.05190; CERN-EP-2021-083.- Geneva : CERN, 2021 - 16 p. Draft (restricted): PDF; Fulltext: PDF;

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