CERN Accelerating science

LHCb Conference Proceedings

Spectroscopy in beauty decays at the LHCb experiment / Ovsiannikova, Tatiana (NRC "Kurchatov Institute" (ITEP) (RU)) ; Abellán Beteta, Carlos (Zurich U.) ; Ackernley, Thomas (Liverpool U.) ; Adeva, Bernardo (U. Santiago de Compostela (main)) ; Adinolfi, Marco (Bristol U.) ; Afsharnia, Hossein (Clermont-Ferrand U.) ; Aidala, Christine Angela (U. Michigan, Ann Arbor) ; Aiola, Salvatore (INFN, Milan) ; Ajaltouni, Ziad (Clermont-Ferrand U.) ; Akar, Simon (Cincinnati U.) et al.
The beauty hadron decays is unique laboratory to study charmonium and charmonium-like states, such as the $\chi_{c1}(3872)$ meson, other exotic states and the tensor $D$-wave $\Psi_2(3823)$ states. [...]
arXiv:2103.04453 ; LHCb-PROC-2021-006 ; CERN-LHCb-PROC-2021-006 ; CERN-LHCb-PROC-2021-006.
- 2021. - 7 p.
Full text - Fulltext

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Charm mixing and $CP$ violation at LHCb / Correa dos Reis, Alberto (CBPF Rio de Janeiro)
Recent LHCb results on charm mixing and $CP$ Violation are presented. The results include the first observation of $CP$ Violation in charm decays and the most precise measurement of the mass difference between the mass eigenstates of neutral mesons. [...]
LHCb-PROC-2021-005; CERN-LHCb-PROC-2021-005.- Geneva : CERN, 2021 - mult.p. Fulltext: PDF;
In : 19th International Conference on B-Physics at Frontier Machines, Online, Japan, 21 - 24 Sep 2020

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Studies of b-hadrons at LHCb / Matiunin, Slava (NRC "Kurchatov Institute" (ITEP) (RU)) /LHCb Collaboration
A large data set collected at the LHCb experiment in proton-proton collisions during Runs 1 and 2 of the Large Hadron Collider has opened a unique possibility to study heavy beauty hadron states and to broaden knowledge of their spectroscopy and production. Recent results on searches for new excited $\mathrm{b}$-hadron states, and studies of $\mathrm{b}$-hadron production, are reviewed. [...]
arXiv:2102.03175; LHCb-PROC-2021-004; CERN-LHCb-PROC-2021-004; CERN-LHCb-PROC-2021-004.- Geneva : SISSA, 2020-12-02 - 6 p. - Published in : PoS ICHEP2020 (2021) 485 Fulltext: 2102.03175 - PDF; LHCb-PROC-2021-004 - PDF; PoS(ICHEP2020)485 - PDF;
In : 40th International Conference on High Energy Physics (ICHEP), Prague, Czech Republic, 28 Jul - 6 Aug 2020, pp.485

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Beauty meson decays to charmonium-like states at LHCb / Ovsiannikova, Tatiana (Kurchatov Inst., Moscow) /LHCb Collaboration
The decays $B^{0}_{s} \to J\psi\pi^{+}\pi^{-}K^{+}K^{-}$ are studied using a data set corresponding to an integrated luminosity of 9 fb$^{-1}$, collected with the LHCb detector in proton-proton collisions at centre of mass energies of 7, 8 and 13 $TeV$. The decays $B^{0}_{s} \to J/\psi K^{*0}\bar{K^{*0}}$ and $B^{0}_{s} \to \chi_{c1}(3872) K^{+}K^{-}$, where the $K^{+}K^{-}$ pair does not originate from a $\phi$ meson, are observed for the first time. [...]
arXiv:2101.03332; LHCb-PROC-2021-003; CERN-LHCb-PROC-2021-003; CERN-LHCb-PROC-2021-003.- Geneva : CERN, 2021 - 11 p. Fulltext: LHCb-PROC-2021-003 - PDF; 2101.03332 - PDF;
In : 23rd International Conference in Quantum Chromodynamics, Montpellier, France, 27 - 30 Oct 2020

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LHCb results on exotic spectroscopy / Kucharczyk, Marcin (Polish Academy of Sciences (PL))
The latest years have observed a resurrection of interest in searches for exotic states motivated by precision spectroscopy studies of beauty and charm hadrons providing the observation of many new exotic states. The recent results on spectroscopy of exotic hadrons obtained by the LHCb Col- laboration are reviewed [...]
LHCb-PROC-2021-002; CERN-LHCb-PROC-2021-002.- Geneva : CERN, 2021 - 6. Fulltext: PDF;
In : Excited QCD 2020, Krynica Zdrój, Poland, 2 - 8 Feb 2020

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Search for long-lived particles in LHCb / Kucharczyk, Marcin (Polish Academy of Sciences (PL))
The present document focuses on the recent searches for the existence of heavy particles beyond the Standard Model at LHCb, exploiting its unique forward acceptance, high-precision tracking and excellent particle identification. Searches for long-lived particles decaying into jet pairs or semileptonically, together with the lepton-flavour-violating decays of Higgs-like boson, are dis- cussed..
LHCb-PROC-2021-001; CERN-LHCb-PROC-2021-001.- Geneva : CERN, 2020 - 4. Fulltext: PDF;
In : 8th Conference of Large Hadron Collider Physics (LHCP), Online, 25 - 30 May 2020

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The Design and Construction of LHCb VELO Upgrades Modules / Svihra, Peter (University of Manchester (GB))
The LHCb experiment is a detector at the LHC designed to capture decays of b- and c-hadrons for the study of CP violation and rare decays. At the end of Run-II, many of the LHCb measurements remain statistically dominated. [...]
LHCb-PROC-2020-005; CERN-LHCb-PROC-2020-005.- Geneva : CERN, 2020 - 6. Fulltext: PDF;
In : 2019 IEEE Nuclear Science Symposium (NSS) and Medical Imaging Conference (MIC), Manchester, United Kingdom, 26 Oct - 2 Nov 2019

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Crystal Fibers for the LHCb Calorimeter Upgrade / Martinazzoli, Loris (Universita & INFN, Milano-Bicocca (IT))
The Large Hadron Collider beauty (LHCb) experiment is one of the four main particle detectors located at the Large Hadron Collider. After the high-luminosity upgrade of the accelerator, the expected radiation dose faced by the LHCb electromagnetic calorimeter will reach peak values of 1 MGy in the centermost part, an amount not tolerable by the currently employed Shashlik technology, which demands a novel radiation hard design. [...]
LHCb-PROC-2020-004; CERN-LHCb-PROC-2020-004.- Geneva : CERN, 2020 - 6. - Published in : IEEE Trans. Nucl. Sci. 67 (2020) 1003 Fulltext: PDF;
In : 15th International Conference on Inorganic Scintillators and Their Applications, Sendai, Japan, 29 Sep - 04 Oct 2019

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A new scheduling algorithm for the LHCb upgrade trigger application / Govorkova, Katya (Nikhef National institute for subatomic physics (NL)) ; Hasse, Christoph (Technische Universitaet Dortmund (DE)) ; Matev, Rosen (CERN) ; Nolte, Niklas Stefan (Technische Universitaet Dortmund (DE)) ; Ponce, Sebastien (CERN) ; Raven, Gerhard (Nikhef National institute for subatomic physics (NL)) ; Stahl, Sascha (CERN)
During Run 3 of the LHC the LHCb detector will process a 30 MHz event rate with a full detector readout followed by a software trigger. To deal with the increased computational requirements, the software framework is reviewed and optimized on a large scale. [...]
LHCb-PROC-2020-003; CERN-LHCb-PROC-2020-003.- Geneva : CERN, 2020 - 5 p. - Published in : J. Phys.: Conf. Ser. 1525 (2020) 012052 Fulltext: PDF;
In : 19th International Workshop on Advanced Computing and Analysis Techniques in Physics Research, Saas Fee, Switzerland, 11 - 15 Mar 2019, pp.012052

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$\phi_s$ status and prospects at LHCb / Govorkova, Katya (Nikhef National institute for subatomic physics (NL))
Recent measurements of the time-dependent CP violation by the LHCb experiment are presented. The decays of $B_s$ mesons to $J/\psi K^+ K^-$ and $J/\psi \pi^+ \pi^-$ final states are used to measure the CP-violating phase $\phi_{s}$ in tree-dominated transitions, while $B_s^0\to(K^+ \pi^-) (K^- \pi^+)$ and $B_s^0\to \phi \phi$ decay modes are used to measure the CP violating phases $\phi_{s}^{sd\overline{d}}$ and $\phi_{s}^{ss\overline{s}}$, which arise in penguin-dominated decays. [...]
LHCb-PROC-2020-002; CERN-LHCb-PROC-2020-002.- Geneva : CERN, 2020 - mult.p. - Published in : PoS Beauty2019 (2020) 005 Fulltext: PDF;
In : 18th International Conference on B-Physics at Frontier Machines, Ljubljana, Slovenia, 30 Sep - 4 Oct 2019

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