Next Article in Journal
Synthesis New of Nucleoside of 1,3-bis-(2,3,5-tri-O-Benzoyl-β-D-Ribofuranosyl)-8-(Trifluoromethyl)-2-Methyl-4-Quinazolinone
Previous Article in Journal
Hydrodynamization Time Near a Critical Point From a Holographic Bjorken Flow
Article Menu
Issue 1 (HQ 2018) cover image

Export Article

Open AccessProceedings

Dielectron Production in pp Collisions at √s = 13 TeV Measured in a Dedicated Low Magnetic-Field Setting with ALICE

on behalf of the ALICE Collaboration
Institute for Nuclear Physics, Goethe-University, 60438 Frankfurt, Germany
Presented at the Hot Quarks 2018—Workshop for Young Scientists on the Physics of Ultrarelativistic Nucleus-Nucleus Collisions, Texel, The Netherlands, 7–14 September 2018.
Proceedings 2019, 10(1), 50; https://doi.org/10.3390/proceedings2019010050
Published: 13 May 2019
PDF [567 KB, uploaded 13 May 2019]

Abstract

The low-mass dielectron production in pp collisions at s = 13 TeV was measured by ALICE with a reduced field of the ALICE central barrel solenoid magnet. This increases the reconstruction efficiency of low- p T electrons and allows a better electron background rejection while simultaneously giving the opportunity to access a similar phase space as covered by the AFS experiment at the Intersecting Storage Rings at CERN. There, an excess of dielectron pairs over the expectation from known dielectron sources was measured at low invariant mass and small pair transverse momenta in pp collisions at s = 63 GeV in 1987. It is shown how the ALICE dielectron analysis of the pp pilot runs at s = 13 TeV with B=0.2 T is adapted to the reduced-field configuration. Preliminary results are compared to the published reference data recorded with the nominal field, to illustrate the benefits of the low magnetic-field setting. Finally, the invariant-mass and pair-transverse-momentum distributions are compared to the AFS measurement to address a possible excess at low m ee and p T , ee .
Keywords: ALICE; dielectrons; LMR excess; pp collisions at 13 TeV; low-field setup ALICE; dielectrons; LMR excess; pp collisions at 13 TeV; low-field setup
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Jung, J., on behalf of the ALICE Collaboration; Dielectron Production in pp Collisions at √s = 13 TeV Measured in a Dedicated Low Magnetic-Field Setting with ALICE. Proceedings 2019, 10, 50.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Proceedings EISSN 2504-3900 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top