2019-09-04
12:06 |
Soft QCD and Central Exclusive Production at LHCb
/ Kucharczyk, Marcin (Polish Academy of Sciences (PL))
The LHCb detector, owing to its unique acceptance coverage $(2 < \eta < 5)$ and a precise track and vertex reconstruction, is a universal tool allowing the study of various aspects of electroweak and QCD processes, such as particle correlations or Central Exclusive Production. The recent results on the measurement of the inelastic cross section at $ \sqrt s = 13 \ \rm{TeV}$ as well as the Bose-Einstein correlations of same-sign pions and kinematic correlations for pairs of beauty hadrons performed using large samples of proton-proton collision data accumulated with the LHCb detector at $\sqrt s = 7\ \rm{and} \ 8 \ \rm{TeV}$, are summarized in the present proceedings, together with the studies of Central Exclusive Production at $ \sqrt s = 13 \ \rm{TeV}$ exploiting new forward shower counters installed upstream and downstream of the LHCb detector. [...]
LHCb-PROC-2019-008; CERN-LHCb-PROC-2019-008.-
Geneva : CERN, 2019 - 6.
Fulltext: PDF;
In : The XXVII International Workshop on Deep Inelastic Scattering and Related Subjects, Turin, Italy, 8 - 12 Apr 2019
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2019-08-15
17:39 |
LHCb Upgrades
/ Steinkamp, Olaf (Universitaet Zuerich (CH))
During the LHC long shutdown 2, in 2019/2020, the LHCb collaboration is going to perform a major upgrade of the experiment. The upgraded detector is designed to operate at a five times higher instantaneous luminosity than in Run II and can be read out at the full bunch-crossing frequency of the LHC, abolishing the need for a hardware trigger [...]
LHCb-PROC-2019-007; CERN-LHCb-PROC-2019-007.-
Geneva : CERN, 2019 - mult.p.
In : Kruger2018, Hazyview, South Africa, 3 - 7 Dec 2018
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2019-08-15
17:36 |
Tests of Lepton Flavour Universality at LHCb
/ Mueller, Katharina (Universitaet Zuerich (CH))
In the Standard Model of particle physics the three charged leptons are identical copies of each other, apart from mass differences, and the electroweak coupling of the gauge bosons to leptons is independent of the lepton flavour. This prediction is called lepton flavour universality (LFU) and is well tested. [...]
LHCb-PROC-2019-006; CERN-LHCb-PROC-2019-006.-
Geneva : CERN, 2019 - mult.p.
In : Kruger2018, Hazyview, South Africa, 3 - 7 Dec 2018
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2019-05-15
16:57 |
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2019-02-12
14:01 |
XYZ states at LHCb
/ 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 several exotic states. The latest results on spectroscopy of exotic hadrons are reviewed, using the proton-proton collision data collected by the LHCb experiment. [...]
LHCb-PROC-2019-004; CERN-LHCb-PROC-2019-004.-
Geneva : CERN, 2019 - 6.
Fulltext: PDF;
In : 15th International Workshop on Meson Physics, Kraków, Poland, 7 - 12 Jun 2018
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2019-01-21
09:59 |
Mixing and indirect $CP$ violation in two-body Charm decays at LHCb
/ Pajero, Tommaso (Universita & INFN Pisa (IT))
The copious number of $D^0$ decays collected by the LHCb experiment during 2011--2016 allows the test of the violation of the $CP$ symmetry in the decay of charm quarks with unprecedented precision, approaching for the first time the expectations of the Standard Model. We present the latest measurements of LHCb of mixing and indirect $CP$ violation in the decay of $D^0$ mesons into two charged hadrons [...]
LHCb-PROC-2019-003; CERN-LHCb-PROC-2019-003.-
Geneva : CERN, 2019 - 10.
Fulltext: PDF;
In : 10th International Workshop on the CKM Unitarity Triangle, Heidelberg, Germany, 17 - 21 Sep 2018
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2019-01-15
14:22 |
Experimental status of LNU in B decays in LHCb
/ Benson, Sean (Nikhef National institute for subatomic physics (NL))
In the Standard Model, the three charged leptons are identical copies of each other, apart from mass differences. Experimental tests of this feature in semileptonic decays of b-hadrons are highly sensitive to New Physics particles which preferentially couple to the 2nd and 3rd generations of leptons. [...]
LHCb-PROC-2019-002; CERN-LHCb-PROC-2019-002.-
Geneva : CERN, 2019 - 7.
Fulltext: PDF;
In : The 15th International Workshop on Tau Lepton Physics, Amsterdam, Netherlands, 24 - 28 Sep 2018
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2019-01-10
15:54 |
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2018-12-20
16:31 |
Simultaneous usage of the LHCb HLT farm for Online and Offline processing workflows
LHCb is one of the 4 LHC experiments and continues to revolutionise data acquisition and analysis techniques. Already two years ago the concepts of “online” and “offline” analysis were unified: the calibration and alignment processes take place automatically in real time and are used in the triggering process such that Online data are immediately available offline for physics analysis (Turbo analysis), the computing capacity of the HLT farm has been used simultaneously for different workflows : synchronous first level trigger, asynchronous second level trigger, and Monte-Carlo simulation. [...]
LHCb-PROC-2018-031; CERN-LHCb-PROC-2018-031.-
Geneva : CERN, 2018 - 7.
Fulltext: PDF;
In : 23rd International Conference on Computing in High Energy and Nuclear Physics, CHEP 2018, Sofia, Bulgaria, 9 - 13 Jul 2018
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2018-12-14
16:02 |
The Timepix3 Telescope andSensor R&D for the LHCb VELO Upgrade
/ Dall'Occo, Elena (Nikhef National institute for subatomic physics (NL))
The VErtex LOcator (VELO) of the LHCb detector is going to be replaced in the context of a major upgrade of the experiment planned for 2019-2020. The upgraded VELO is a silicon pixel detector, designed to with stand a radiation dose up to $8 \times 10^{15} 1 ~\text {MeV} ~\eta_{eq} ~ \text{cm}^{−2}$, with the additional challenge of a highly non uniform radiation exposure. [...]
LHCb-PROC-2018-030; CERN-LHCb-PROC-2018-030.-
Geneva : CERN, 2018 - 8.
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