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2021-09-16
11:03
Search for the doubly charmed baryon $\it{\Xi}_{cc}^{+}$ in the $\it{\Xi}_{c}^{+} \pi^{-} \pi^{+}$ final state
A search for the doubly charmed baryon $\it{\Xi}_{cc}^{+}$ is performed in the $\it{\Xi}_{cc}^{+} \rightarrow \it{\Xi}_{c}^{+} \pi^{-} \pi^{+}$ decay mode, where the $\it{\Xi}_{c}^{+}$ baryon is reconstructed in the $p K^{-} \pi^{+}$ final state. [...]
CERN-EP-2021-155 ; arXiv:2109.07292 ; LHCB-PAPER-2021-019. - 2021.
Fulltext - Related data file(s) - Supplementary information

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2021-09-16
08:46
Measurement of $\chi_{c1}(3872)$ production in proton-proton collisions at $\sqrt{s}=8$ and 13 TeV
The production cross-section of the $\chi_{c1}(3872)$ state relative to the $\psi(2S)$ meson is measured using proton-proton collision data collected with the LHCb experiment at centre-of-mass energies of $\sqrt{s}=8$ and 13 TeV, corresponding to integrated luminosities of 2.0 and 5.4 fb$^{-1}$, respectively. [...]
CERN-EP-2021-182 ; arxiv:2109.07360 ; LHCB-PAPER-2021-026. - 2021.
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2021-09-16
04:32
Comparison of $pp$ and $p\bar{p}$ differential elastic cross sections and observation of colourless C-odd gluonic exchanges / Österberg, Kenneth
The TOTEM 2.76, 7, 8, and 13 TeV pp elastic differential cross sections are extrapolated using a data-driven approach to obtain the 1.96 TeV pp elastic cross section. [...]
arXiv:2109.06271. -

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2021-09-16
04:29
Carroll contractions of Lorentz-invariant theories / Henneaux, Marc (Intl. Solvay Inst., Brussels ; Brussels U. ; CERN ; College de France) ; Salgado-Rebolledo, Patricio (Intl. Solvay Inst., Brussels ; Brussels U.)
We consider Carroll-invariant limits of Lorentz-invariant field theories. [...]
arXiv:2109.06708. - 29 p.

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2021-09-16
04:29
Beam halo from Touschek scattering in the KEK Accelerator Test Facility / Yang, R. (KEK, Tsukuba ; Sokendai, Tsukuba) ; Aryshev, A. (KEK, Tsukuba ; Sokendai, Tsukuba) ; Bambade, P. (IJCLab, Orsay) ; Bergamaschi, M. (CERN) ; Kubo, K. (KEK, Tsukuba ; Sokendai, Tsukuba) ; Naito, T. (KEK, Tsukuba ; Sokendai, Tsukuba) ; Terunuma, N. (KEK, Tsukuba ; Sokendai, Tsukuba) ; Wallo, S. (IJCLab, Orsay) ; Zhang, J. (DESY)
Beam halo is one of the crucial issues limiting the machine performance and causing radioactivation in high-intensity accelerators. [...]
arXiv:2109.06503. -

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2021-09-15
04:51
$\rm{\Lambda^{+}_{c}}$ production cross section in pp and p--Pb collisions down to $p_{\rm T}$ = 0 at $\sqrt{s_{\rm NN}}$ = 5.02 TeV measured with ALICE / Kalteyer, Annalena Sophie (Darmstadt, GSI ; Heidelberg U.)
The open heavy-flavour hadron measurements in proton--proton and proton--lead collisions give insight into the charm production and hadronization mechanisms. [...]
arXiv:2109.05949. - 5 p.

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2021-09-15
04:46
Unveiling Hidden Physics at the LHC / Fischer, Oliver (Liverpool U.) ; Mellado, Bruce (U. Witwatersrand, Johannesburg, Sch. Phys. ; iThemba LABS) ; Antusch, Stefan (Basel U.) ; Bagnaschi, Emanuele (PSI, Villigen) ; Banerjee, Shankha (CERN) ; Beck, Geoff (U. Witwatersrand, Johannesburg, Sch. Phys. ; iThemba LABS) ; Belfatto, Benedetta (Pisa U. ; INFN, Pisa) ; Bellis, Matthew (Siena Coll., Loudonville) ; Berezhiani, Zurab (L'Aquila U. ; INFN, Aquila) ; Blanke, Monika (KIT, Karlsruhe ; KIT, Karlsruhe, TTP) et al.
The field of particle physics is at the crossroads. [...]
arXiv:2109.06065. - 70 p.

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2021-09-15
04:43
Apparent strangeness enhancement from multiplicity selection in high energy proton-proton collisions / Loizides, Constantin (Oak Ridge) ; Morsch, Andreas (CERN)
The increase of strange-particle yields relative to pions versus charged-particle multiplicity in proton-proton (pp) collisions at the LHC is usually described by microscopic or hydrodynamical models as a result of the increasing density of produced partons or strings and their interactions. [...]
arXiv:2109.05181. - 23 p.

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2021-09-14
07:32
Nonlocal Activation of Bound Entanglement via Local Quantum Zeno Dynamics / Ozaydin, Fatih (Tokyo City U.) ; Bayindir, Cihan (Istanbul, Tech. U. ; Bogazici U. ; CERN) ; Altintas, Azmi Ali (Okan U., Istanbul)
Bound entanglement was shown to be activated [Phys. [...]
arXiv:2109.02214. - 2021. - 6 p.

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2021-09-14
04:49
The hadronic contribution to the running of the electromagnetic coupling and electroweak mixing angle / José, Teseo San ; Cè, Marco ; Gérardin, Antoine ; von Hippel, Georg ; Meyer, Harvey B. ; Miura, Kohtaroh ; Ottnad, Konstantin ; Risch, Andreas (NIC, Zeuthen) ; Wilhelm, Jonas ; Wittig, Hartmut
As present and future experiments, on both the energy and precision frontiers, look to identify new physics beyond the Standard Model, we require more precise determinations of fundamental quantities, like the QED and electroweak couplings at various momenta. [...]
arXiv:2109.04537 ; CERN-TH-2021-126 ; DESY-21-137 ; MITP/21-038. - 9 p.

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