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Title: Search strategy using LHC pileup interactions as a zero bias sample

Abstract

Due to a limited bandwidth and a large proton-proton interaction cross section relative to the rate of interesting physics processes, most events produced at the Large Hadron Collider (LHC) are discarded in real time. A sophisticated trigger system must quickly decide which events should be kept and is very efficient for a broad range of processes. However, there are many processes that cannot be accommodated by this trigger system. Furthermore, there may be models of physics beyond the standard model (BSM) constructed after data taking that could have been triggered, but no trigger was implemented at run time. Both of these cases can be covered by exploiting pileup interactions as an effective zero bias sample. In conclusion, at the end of high-luminosity LHC operations, this zero bias dataset will have accumulated about 1 fb -1 of data from which a bottom line cross section limit of O (1) fb can be set for BSM models already in the literature and those yet to come.

Authors:
 [1];  [2]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1437505
Alternate Identifier(s):
OSTI ID: 1458467; OSTI ID: 1485095
Grant/Contract Number:  
AC02-05CH11231; AC02-76SF00515
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 97; Journal Issue: 9; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Nachman, Benjamin, and Rubbo, Francesco. Search strategy using LHC pileup interactions as a zero bias sample. United States: N. p., 2018. Web. doi:10.1103/physrevd.97.092002.
Nachman, Benjamin, & Rubbo, Francesco. Search strategy using LHC pileup interactions as a zero bias sample. United States. doi:10.1103/physrevd.97.092002.
Nachman, Benjamin, and Rubbo, Francesco. Thu . "Search strategy using LHC pileup interactions as a zero bias sample". United States. doi:10.1103/physrevd.97.092002.
@article{osti_1437505,
title = {Search strategy using LHC pileup interactions as a zero bias sample},
author = {Nachman, Benjamin and Rubbo, Francesco},
abstractNote = {Due to a limited bandwidth and a large proton-proton interaction cross section relative to the rate of interesting physics processes, most events produced at the Large Hadron Collider (LHC) are discarded in real time. A sophisticated trigger system must quickly decide which events should be kept and is very efficient for a broad range of processes. However, there are many processes that cannot be accommodated by this trigger system. Furthermore, there may be models of physics beyond the standard model (BSM) constructed after data taking that could have been triggered, but no trigger was implemented at run time. Both of these cases can be covered by exploiting pileup interactions as an effective zero bias sample. In conclusion, at the end of high-luminosity LHC operations, this zero bias dataset will have accumulated about 1 fb-1 of data from which a bottom line cross section limit of O (1) fb can be set for BSM models already in the literature and those yet to come.},
doi = {10.1103/physrevd.97.092002},
journal = {Physical Review D},
number = 9,
volume = 97,
place = {United States},
year = {2018},
month = {5}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/physrevd.97.092002

Figures / Tables:

FIG. 1 FIG. 1: The excluded cross section and the integrated luminosity are shown throughout the lifetime of the (HL-)LHC. Statistical uncertainties are assumed to dominate over systematic ones in this low background regime. For reference, the cross section for a 2 TeV gluino and a 150 GeV leptophobic Z' with gmore » = 0.1 are also shown (see text for details).« less

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.