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Title: Intrinsic charm production of doubly charmed baryons: Collider vs. fixed-target

Abstract

We report the LHCb Collaboration has measured the doubly charmed baryon, $$\Xi^{++}_{cc} (ucc)$$, through two different decay channels in $p + p$ collisions at center-of-mass energies of 7, 8 and 13 TeV. While they have performed similar searches for the doubly charmed baryon $$\Xi^{+}_{cc} (dcc)$$, it has not yet been observed by LHCb. However, the fixed-target experiment, SELEX, at Fermilab, reported the observation of the $$\Xi^{+}_{cc}$$ in two different decay channels with a 600 GeV charged hyperon beam. The beam was composed of an admixture of $$π^{±}, p, \overline p $$ components as well as the $Σ^–$ hyperon. Much discussion has arisen over the fact that the fixed-target observations have not been easily reproduced by the collider experiments at higher energies, where one might have expected the production rates to be much higher due to the orders of magnitude increase in the center of mass energy with LHCb.

Authors:
 [1];  [2]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Univ. of California, Davis, CA (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Nuclear Physics (NP)
OSTI Identifier:
1608087
Report Number(s):
LLNL-JRNL-797854-1
Journal ID: ISSN 1674-7348; 1000073
Grant/Contract Number:  
AC52-07NA27344; SC0004014; AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Science China. Physics, Mechanics & Astronomy
Additional Journal Information:
Journal Volume: 63; Journal Issue: 2; Journal ID: ISSN 1674-7348
Publisher:
Science China Press and Springer
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Vogt, Ramona, and Brodsky, Stanley J. Intrinsic charm production of doubly charmed baryons: Collider vs. fixed-target. United States: N. p., 2019. Web. https://doi.org/10.1007/s11433-019-1496-7.
Vogt, Ramona, & Brodsky, Stanley J. Intrinsic charm production of doubly charmed baryons: Collider vs. fixed-target. United States. https://doi.org/10.1007/s11433-019-1496-7
Vogt, Ramona, and Brodsky, Stanley J. Tue . "Intrinsic charm production of doubly charmed baryons: Collider vs. fixed-target". United States. https://doi.org/10.1007/s11433-019-1496-7. https://www.osti.gov/servlets/purl/1608087.
@article{osti_1608087,
title = {Intrinsic charm production of doubly charmed baryons: Collider vs. fixed-target},
author = {Vogt, Ramona and Brodsky, Stanley J.},
abstractNote = {We report the LHCb Collaboration has measured the doubly charmed baryon, $\Xi^{++}_{cc} (ucc)$, through two different decay channels in $p + p$ collisions at center-of-mass energies of 7, 8 and 13 TeV. While they have performed similar searches for the doubly charmed baryon $\Xi^{+}_{cc} (dcc)$, it has not yet been observed by LHCb. However, the fixed-target experiment, SELEX, at Fermilab, reported the observation of the $\Xi^{+}_{cc}$ in two different decay channels with a 600 GeV charged hyperon beam. The beam was composed of an admixture of $π^{±}, p, \overline p $ components as well as the $Σ^–$ hyperon. Much discussion has arisen over the fact that the fixed-target observations have not been easily reproduced by the collider experiments at higher energies, where one might have expected the production rates to be much higher due to the orders of magnitude increase in the center of mass energy with LHCb.},
doi = {10.1007/s11433-019-1496-7},
journal = {Science China. Physics, Mechanics & Astronomy},
number = 2,
volume = 63,
place = {United States},
year = {2019},
month = {12}
}

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Works referenced in this record:

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