Instructions.dvi Instructions
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CEPC NOTE
CEPC PERF 2017 XXX
August 30, 2017
Jet energy scale and jet energy resolution study at CEPC
Peizhu Lai
Abstract
Abstract for JES and JER studies on CEPC
E-mail address: ligang@mail.ihep.ac.cn
c
Copyright 2017 IHEP for the benefit of the CEPC Collaboration.
Reproduction of this article or parts of it is allowed as specified in the CC-BY-3.0 license.
Contents
1 Introduction 2
2 Experimental setup 2
3 Samples 2
4 Event selection 2
5 Deriving the jet energy scale and jet energy resolution 2
5.1 Reconstruction of jets in CEPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
5.2 Methodology ........................................ 2
5.3 results............................................ 2
6 Discussion 2
7 Summary and conclusion 3
8 Acknowledgements 3
9 Rules for referencing 3
Appendices 4
A The cepcnote class 4
A.1 Dependencies........................................ 4
A.2 Customcommands ..................................... 5
B Bibliography 5
C Miscellaneous L
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X tips 6
C.1 Graphics........................................... 6
C.2 Definitions.......................................... 6
C.3 Emphasis .......................................... 7
D General Style 7
E The cepcphysics.sty style file 7
E.1 Remarks on units and symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
E.2 Othershortcuts ....................................... 8
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1 Introduction
The introduction should be fairly brief, not more than a few pages. State the measurement being made,
motivate its importance experimentally and theoretically. Include a summary of what is known to date
about this measurement. Give a brief outline for the rest of the paper.
Your first action before embarking on writing a paper should be to read the CEPC Publication Pol-
icy [1], available from the web pages of the Publication Committee. Chapter 3 of this document details
the refereeing and approval procedures that you will need to follow; chapter 4 gives information on the
style.
At some point during writing of an CEPC paper, you should decide what journal it will be submitted
to. Please keep in mind that each journal makes specific demands on length and style. Most journals use
regular capitalization for titles (i.e. capitalize the first word and all proper nouns, e.g. “The search for
large extra dimensions”). The notable exception is Physical Review Letters, which capitalizes the first
word and all other important words, e.g. “The Search for Large Extra Dimensions”.
The L
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X file and Postscript versions of this template can be found on the web pages of the CEPC
Publication Committee. Example macros for figures can be found there as well. Comments and/or
suggestions on improvements to this template are very welcome and should be given to the publication
committee.
This paper template has been tested using L
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X2e. You should get this version automatically. If you
have problems check which L
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2 Experimental setup
Description about CECP detector
3 Samples
Any Monte Carlo programs used must be clearly stated with full version number. A brief description of
the program is useful but not necessary unless a less well known program is used. Any corrections or
special parameter settings must be clearly explained. The statistics should be given if the amount used
results in a non-negligible uncertainty.
4 Event selection
List the trigger and offline selection criteria, give the obtained statistics.
5 Deriving the jet energy scale and jet energy resolution
5.1 Reconstruction of jets in CEPC
5.2 Methodology
5.3 results
6 Discussion
Put the results into the context of the theory or a model. If the results lead to exclusion plots, make sure
that it is clear which region on the plot is excluded.
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7 Summary and conclusion
Reiterate the main points of the paper and the primary results and conclusions.
Note that many readers look mostly at the title, abstract and conclusion. The conclusion should be
interesting enough to make them want to read the whole paper. It is not good style to just repeat the
abstract.
If your paper is short and only has one result quoted at the end of the paper, then you should consider
whether conclusions are necessary.
Try not to end your conclusions with a sentence such as “All the results in this paper are in good
agreement with the Standard Model, the current world average and recent measurements by other ex-
periments”. This might lead a referee (internal or external) to wonder why it is worth publishing this
paper!
8 Acknowledgements
A standard template for the acknowledgements is available on the web pages of the Publication Commit-
tee. See reference [1] for the URL.
9 Rules for referencing
Use BibT
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X for the references. See Appendix B for an explanation.
Only cite permanent, publicly available, or CEPC approved references. Private references, not avail-
able to the general public, should be avoided. Caution should be used when referring to CEPC notes.
Only reference approved notes. Do not reference COM or INT notes, as these are not available outside
CEPC.
Whenever possible, cite the article’s journal rather than its preprint number. If desired, the hep-ex
number can be given in addition. Always double check references when copying them from another
source.
Referencing styles are journal-dependent. See the CEPC Publication Policy document for more
information.
References
[1] “Besiii publication policy.” Available from the besiii management web page:
Http://bes3.ihep.ac.cn/orga/besiii publication policy rev 12 2013.pdf.
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Appendices
Use the Appendices to include all the technical details of your work that are relevant for the CEPC
Collaboration only (e.g. datases details, software release used). The Appendices can be removed from
an CEPC Internal Note becoming an CEPC Public Note.
Use the following commands to start the Appendices section:
\newpage
\appendix
\part*{Appendices}
\addcontentsline{toc}{part}{Appendices}
A The cepcnote class
This paper has been typeset using the cepcnote.cls class, that implement the CEPC template can
be used for papers, preprints, notes. The cepcnote class is available on web pages of the Publication
Committee, as well as this instruction paper and the related files.
cepcnote.cls derives from the standard L
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options you would have used with article will work with it. For instance, this paper has been produced
using this very simple preamble:
\documentclass[11pt,a4paper]{cepcnote}
\graphicspath{{figures/}}
\usepackage{cepcphysics}
\usepackage{subfigure}
A.1 Dependencies
The cepcnote class depends on these packages, which presence in your system is required:
•graphicx
•mathptmx
•lineno
The first two are all usually already installed in any modern L
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the ednotes package bundle and is direclty provided with this package; cepcnote was tested on a IHEP
lxslc login node and worked out of the box. The cepcnote class works both with L
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If you wish to use the cepccover package with the cepcnote class, load the latest version of the
package in your system, and invoke it using the coverpage option of the class:
\documentclass[11pt,a4paper,coverpage]{cepcnote}
instead of the the usual usepackage command: this will ensure that the cover page is produced before
the note title page.
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A.2 Custom commands
The cepcnote class implements some custom commands, mainly used to typeset the frontpage content:
•\title{<Title>} typesets the paper title. If not given, a dummy Title goes here title will be
produced.
•\author{<Author>} typesets the paper author. If not explicitly given, The CEPC Collaborations
will be used by default. Note that the \author{} command is pretty limited in case you want
to display multiple author names and multiple affiliations. For this use case the authblk.sty
package is provided; this is a typical example of its use:
\usepackage{authblk}
\renewcommand\Authands{, } % avoid ‘‘. and’’ for last author
\renewcommand\Affilfont{\itshape\small} % affiliation formatting
\author[a]{First Author}
\author[a]{Second Author}
\author[b]{Third Author}
\affil[a]{One Institution}
\affil[b]{Another Institution}
•\mail{<Mail address>} typesets only one E-mail address in the foot note.
•\abstracttext{<The abstract text>} typesets the abstract in the front page.
•\date{<Date>} typesets the paper date. If not explicitly given, the current date (\today) will be
used.
•\draftversion{<Draft Version>} displays the draft version on the front page, a DRAFT
banner on all the other page headings, and add line numbers to all text to easy commenting abd
reviewing. Can be omitted.
•\journal{<Journal Name>} displays the phrase to be submitted to Journal Name at the bottom
of the front page. Can be omitted.
•\skipbeforetitle{<lenght>} sets the distance between the title page header and the note title.
The default value should be fine for most notes, but in case you have a long list of authors or a
lenghtly abstract you can use this command to buy some extra space. Note that <lenght> can also
be negative (use it at your own risk!).
emptynote.tex contains a basic skeleton that can be used to start typing a new note using the cepcnote
class. All the custom commands described above are used in this example file, in order to demonstrate
their use.
B Bibliography
We recommend to use BibT
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X for the references. Although it often appears harder to use at the beginning,
it means that the number of typos should be reduced significantly and the format of the references will
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be correct, without you having to worry about formatting it. In addition the order of the references is
automatically correct.
A file with the extension .bib (in this example: instruction.bib) should contain all the refer-
ences. This file may also contain references that you do not use, so it may act like a library of references.
The typical compilation cycle when using BibT
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X looks like the following:
(pdf)latex instructions
bibtex instructions
(pdf)latex instructions
(pdf)latex instructions
BibT
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L
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all references be correct. Unless you change a reference you do not have to do the bibtex step again.
A BibT
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X style file (cepcBibStyleWoTitle.bst) is provided with the CEPC template. You can
use it in your text source file like in the following:
\bibliographystyle{cepcBibStyleWoTitle}
\bibliography{instructions}
Important:for further information on BibT
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at the “QuickGuide BIBTEX” file shipped with this package.
C Miscellaneous L
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X tips
C.1 Graphics
Use the graphicx package [] to include your plots and figure. The use of older packages like espfig is
deprecated. Since the graphicx package is required by the cepcnote class, it is automatically loaded
when using it, and there is no need to explicitly included it in the document preamble.
Always include your graphics file without metioning the file extension. Fior inctance, if you want to
include the figure.eps file, you should use a sysntax like this:
\includegraphics[width=\textwidth]{figure}
This will allow to compile your document using either L
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X or pdfL
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X without changing your source
file: you can in fact have both figure.eps and figure.pdf in your working directorym and the proper
one will be picked up according to the processing method you chose.
It is a good habit to keep you graphics file in a separated sub-directory (e.g. in figure/. In this case
you can include them by mentioning it explicitly every time:
\includegraphics[width=\textwidth]{figures/figure}
or by telling once for all to the graphicx package where to look for them, by using this command:
\graphicspath{{figures/}}
C.2 Definitions
You can use \ensuremath in definitions, so that they will work in both text mode and math mode,
e.g. \newcommand{\UoneS}{\ensuremath{\Upsilon(\mathrm{1S})}} to get Υ(1S) in either mode
(\UoneS{} or $\UoneS$).
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C.3 Emphasis
Use italics for emphasis sparingly: too many italicized words defeat their purpose. When you do italicize
a word, really italicize it: do not use math mode! Note the difference between per se (\emph{per se})
and perse ($per se$). Abbreviations like i.e., e.g., etc., and et al. should not be italicized! For program
names we recommend to use small capitals: {\sc Pythia}} produces Pythia.
D General Style
We recommend the use of British English. However, whatever you decide to choose, be consistent
throughout the paper. For much more detailed information on writing, spelling and typographic style,
etc. please see the CEPC Style Guide []. The CEPC Publication Policy contains a list of CEPC detector
acronyms. Standard ways to write these are in the CEPC Glossary.
E The cepcphysics.sty style file
The cepcphysics.sty style file implements a series of useful shortcut to typeset a physics paper, such
as units or particle symbols. It can included in the preamble of your paper with the usual syntax:
\usepackage{cepcphysics}
E.1 Remarks on units and symbols
Use SI units in roman-type font. Leave a small space between the value and the units (e.g. 12 mm),
and make sure they end up always together on the same line. 12\,mm will fulfill both the requirements.
Natural units, where c=~=1, should be used for all CEPC publications. Masses are therefore in GeV,
not GeV/c2.
Use the shortcut \GeV{} (GeV) defined by cepcphysics.sty instead of just typing GeV (GeV),
in order not to leave a large space between the eand the V. Symbols \TeV,\MeV,\keV and \eV also
exist. In math mode the symbol leaves a space between the number and the unit, i.e. the beam energy
is $7\TeV$ (7 TeV). The symbol works in text mode and in math mode i.e. 99.0 \MeV (99.0 MeV),
$88.4\keV$ (88.4 keV).
Use math mode for all symbols (e.g. use c($c$) rather than simply c). Momentum is a lower case
$p$. Transverse momentum is a lower case pwith an upper case Tsubscript: \pT produces pT. Energy is
an upper case $E$,\ET produces ET. Use \mathscr mode for luminosity Lor aplanarity A, including
the package mathrsfs.sty.
Trigonometric functions should be in roman type. Natural logarithm should be ln and log base 10 is
log. When in math mode, use $\ln$, $\sin$, etc. We recommend to specify the base of the logarithm:
$\log_{10}$.
If your note makes use of cones, for example cone-jets, explain that these cones are constructed in
η-φspace, and define η.
Add the word events as the unit when quoting the number of events: “The resulting background is
4.0±1.3 events.”. The number of expected events should be written as Npred rather than Nexp, since the
latter could also mean experimental.
For particle names and symbols, CEPC uses the standards of the Particle Data Book. Intermediate
vector bosons should be called W boson(s) and Z boson(s), not just W’s or Ws. The Z boson should
not have a superscript of 0. W without the word boson attached may be used in W pair production,
and similar phrases. Other particle names should be spelled out when used in a sentence: muon(s),
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electron(s), tau lepton(s). Top quark should be used instead of top in most places: say “top quark mass”
instead of “top mass”. Top quark and bottom quark may be shortened to t quark and b quark. The
neutrino symbol νshould not have any subscripts, unless necessary for understanding. For the J/ψ use
the command \Jpsi from cepcphysics.sty: it will produce a lower case ψ.
When in doubt, use the PDG style.
E.2 Other shortcuts
The cepcphysics.sty style file contains among other things:
\lapprox ∼
<\rapprox ∼
>\rts √s
\Ecm Ecm \stat (stat.) \syst (syst.)
\Zboson Z\Wboson W\Wplus W+
\Wminus W−\Wpm W±\Wmp W∓
\Afb Af b \GW ΓW\GZ ΓZ
\Wln W→ℓν \Zll Z→ℓℓ \Zee Z→ee
\Zmm Z→µµ \mZ mZ
\mW mW\mH mH
\Mtau mτ\swsq sin2θW\swel sin2θlept
eff
\swsqb sin2θW\swsqon sin2θW≡1−m2
W/m2
Z\gv gV
\ga gA\gvbar ¯gV\gabar ¯gA
\Zprime Z′\Hboson H\GH ΓH
The command \Zzero is identical to \Zboson.
\tbar ¯
t\ttbar t¯
t\bbar ¯
b
\bbbar b¯
b\cbar ¯c\ccbar c¯c
\sbar ¯s\ssbar s¯s\ubar ¯u
\uubar u¯u\dbar ¯
d\ddbar d¯
d
\fbar ¯
f\ffbar f¯
f\qbar ¯q
\qqbar q¯q\nbar ¯ν\nnbar ν¯ν
\ee e+e−\mumu µ+µ−\tautau τ+τ−
\epm e±\leplep ℓ+ℓ−\lnu ℓν
\BoBo B0–¯
B0\BodBod B0
d–¯
B0
d\BosBos B0
s–¯
B0
s
\Bd B0
d\Bs B0
s\Bu Bu
\Bc Bc\Lb Λb\jpsi J/ψ
\Jpsi J/ψ \Jee J/ψ →e+e−\Jmm J/ψ →µ+µ−
\psip ψ′\kzero K0\kzerobar K0
\kaon K\kplus K+\kminus K−
\klong K0
L\kshort K0
S\Ups Υ
\alphas αS\Lms ΛMS \Lmsfive Λ(5)
MS \KT k⊥
\Vud |Vud|\Vus |Vus|\Vub |Vub|
\Vcd |Vcd|\Vcs |Vcs|\Vcb |Vcb|
\Vtd |Vtd|\Vts |Vts|\Vtb |Vtb|
\Azero A0\hzero h0\Hzero H0
\Hplus H+\Hminus H−\Hpm H±
A generic macro \susy#1 is defined, so that for example \susy{q} produces ˜qand similar.
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\chinop ˜χ+\chinotwom ˜χ−
2\chinopm ˜χ±
\nino ˜χ0\ninothree ˜χ0
3\gravino ˜
G
\squark ˜q\gluino ˜g\slepton ˜
ℓ
\stop ˜
t\stopone ˜
t1\stopL ˜
tL
\sbottom ˜
b\sbottomtwo ˜
b2\sbottomR ˜
bR
\sleptonL ˜
ℓL\sel ˜e\smuR ˜µR
\stauone ˜τ1\snu ˜ν\squarkR ˜qR
For ˜q,˜
t,˜
b,˜
ℓ, ˜e, ˜µand ˜τ, L and R states are defined; for stop, sbottom and stau also the light (1) and heavy
(2) states. There are four neutralinos and two charginos defined, the index number unfortunately needs
to be written out completely. For the charginos the last letter(s) indicate(s) the charge: p for +, m for -,
and pm for ±.
\pt pT\pT pT\et ET
\eT ET\ET ET\HT HT
\ptsq p2
T\met{} Emiss
T
Use \met{} rather than just \met to get the spacing right. In principle this works for any macro, although
in most cases it will not be needed as xspace.sty will take care of the spacing. Somehow xspace.sty
doesn’t do a good job for Emiss
T.
\ifb fb−1\ipb pb−1\inb nb−1
\TeV TeV \GeV GeV \MeV MeV
\keV keV \eV eV
And \tev,\gev,\mev,\kev, and \ev have the same results.
A generic macro \mass#1 is defined, so that for example \mass{\mu} produces mµµ and similar.
\twomass{\mu e} will produce mµe.
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