1/11

ATLASᐇ㦂䛻䛚䛡䜛㔜ᚰ⣔⾪✺䜶䝛䝹䜼䞊
8TeV 䛷䛾㝧Ꮚ-㝧Ꮚ⾪✺䛾䝕䞊䝍䜢⏝䛔䛯䝖䝑䝥䜽䜷䞊䜽䛸䝪䝖䝮䜽䜷䞊䜽䛻ᔂቯ䛩䜛Ⲵ㟁䝠䝑䜾䝇⢏Ꮚ䛾᥈⣴ᩘ⌮≀㉁⛉Ꮫ◊✲⛉ ≀⌮Ꮫᑓᨷ⣲⢏Ꮚᐇ㦂◊✲ᐊ ༤ኈᚋᮇㄢ⛬3ᖺỌ⏣ ࿴ᶞ2017ᖺ1᭶24᪥ CiRfSE 䝽䞊䜽䝅䝵䝑䝥Ⲵ㟁䝠䝑䜾䝇⢏Ꮚ᥈⣴䛾ືᶵ
• 2012ᖺ䛻ATLAS䛸CMSᐇ㦂䛷䝠䝑䜾䝇⢏Ꮚ䜢Ⓨぢ• ᶆ‽ᶍᆺ䛾㔜せ䛺⢏Ꮚ䛜䛩䜉䛶Ⓨぢ• ᶆ‽ᶍᆺ䛜ᢪ䛘䜛ᮍゎỴၥ㢟– 㝵ᒙᛶၥ㢟䚸䝎䞊䜽䝬䝍䞊䛺䛹ᶆ‽⌮ㄽ䜢ᣑᙇ䛩䜛ᚲせᛶ䝠䝑䜾䝇㡯䛾ᣑᙇ䛻䜘䜚Ⲵ㟁䝠䝑䜾䝇⢏Ꮚ䛜ฟ⌧• Two Higgs Doublet Model (THDM)– 䠎䛴䛾䝠䝑䜾䝇㡯䠖 ᶆ‽⌮ㄽ䛾䝠䝑䜾䝇㡯䜢䜒䛖䠍䛴㏣ຍ– 䠑䛴䛾䝠䝑䜾䝇⢏Ꮚ䛜ฟ⌧䠖 h0䚸H0䚸 A0䚸 H㼼– 䝠䝑䜾䝇㡯䛸䝣䜵䝹䝭䜸䞁䜔䝪䝌䞁䛸䛾⤖ྜ䛾䝟䝍䞊䞁䛻䜘䜚䚸䠐䛴
䛾Type䛜Ꮡᅾ• Minimum Super-symmetric Standard Model (MSSM)– THDM Type-II䜢౑⏝– SUSY⢏Ꮚ䛛䜙䛾㍽ᑕ⿵ṇ䛜䝠䝑䜾䝇⢏Ꮚ䛾㉁㔞䛻ຠ䛔䛶䛟䜛

2/11Ⲵ㟁䝠䝑䜾䝇⢏Ꮚ䛾⏕ᡂ䛸ᔂቯ㐣⛬

3/11• Ⲵ㟁䝠䝑䜾䝇⢏Ꮚ䛾⏕ᡂ㐣⛬䛿୺䛻䠎䛴– 䝖䝑䝥䜽䜷䞊䜽䛛䜙䛾ᔂቯ 䠄mH+ < mt䠅䠖 t → H+b– 䝟䞊䝖䞁ྠኈ䛾⾪✺ 䠄mH+ > mt䠅䠖 g → ̅H+

mH+䠖Ⲵ㟁䝠䝑䜾䝇⢏Ꮚ䛾㉁㔞
mt䠖䝖䝑䝥䜽䜷䞊䜽䛾㉁㔞

䝖䝑䝥䜽䜷䞊䜽䜘䜚㔜䛔Ⲵ㟁䝠䝑䜾䝇⢏Ꮚ䠄200~600 GeV䠅䛻↔Ⅼ• Ⲵ㟁䝠䝑䜾䝇⢏Ꮚ䛾ᔂቯ䛿䛔䛟䛴䛛䛾ኚᩘ䛻౫Ꮡ– tanβ 䠄஧䛴䛾┿✵ᮇᚅ್䛾ẚ䠅– Ⲵ㟁䝠䝑䜾䝇⢏Ꮚ䛾㉁㔞
– SUSY 䝅䝘䝸䜸• ୺䛻mH+䛾್䛷ඃໃ䛺ᔂቯ䝰䞊䝗䛜ኚ໬
– mH+ > mt 䛾ሙྜ䚸H+ → t 䛜ඃໃ• ಙྕ㐣⛬䠖 g → ̅H+ → W- t
→ … → bl+ߥ q’

஦㇟㑅ู

4/11

• ATLAS᳨ฟჾ䛷ྲྀᚓ䛥䜜䛯Run1䛾㝧Ꮚ-㝧Ꮚ⾪✺䛾䝕䞊䝍䜢౑⏝– 㔜ᚰ⣔⾪✺䜶䝛䝹䜼䞊8 TeV䚸✚ศ䝹䝭䝜䝅䝔䜱20.3 fb-1

• ஦㇟㑅ู䠖䠍䛴䛾䝺䝥䝖䞁䚸4䛴௨ୖ䛾䝆䜵䝑䝖䚸b-tag䛥䜜䛯䝆䜵䝑䝖䛜2䛴௨ୖ– 㟁Ꮚ: Pt > 25 GeV, |η| < 2.47 (1.37 < |η| < 1.52 䛿㝖እ)– 䝭䝳䞊䜸䞁: Pt > 25 GeV, |η| < 2.5– 䝆䜵䝑䝖: Pt > 25 GeV, |η|<2.5• 㼎㻙㼠㼍㼓䠖 70 㻑䛾☜⋡䛷㼎䜽䜷䞊䜽⏤᮶䛾䝆䜵䝑䝖䜢ྠᐃ• ஦㇟㑅ู䜢㏻䛳䛯䝕䞊䝍䜢⏝䛔䛶ゎᯒ䜢ヲ䛧䛟⾜䛖ᅗ䠖ಙྕ஦㇟䛾䝣䜯䜲䞁䝬䞁䝎䜲䜰䜾䝷䝮bb– ⫼ᬒ஦㇟䛾⌮ゎ– ಙྕ஦㇟䛛䜙䛾ᐤ୚• ከኚᩘゎᯒ䛾୍䛴䛷䛒䜛
Boosted Decision Tree (BDT)䜰䝹䝂䝸䝈䝮䜢౑⏝Qbq䝁䞁䝖䝻䞊䝹㡿ᇦ䛸䝅䜾䝘䝹㡿ᇦ

5/11• ஦㇟㑅ูᚋ䛾䝕䞊䝍䜢䝁䞁䝖䝻䞊䝹㡿ᇦ䛸䝅䜾䝘䝹㡿ᇦ䛻ศ㞳– 䝁䞁䝖䝻䞊䝹㡿ᇦ䠖 䜋䛸䜣䛹⫼ᬒ஦㇟o ⫼ᬒ஦㇟䛾⌮ゎ– 䝅䜾䝘䝹㡿ᇦ䠖 ಙྕ஦㇟䜢ከ䛟ྵ䜐o Ⲵ㟁䝠䝑䜾䝇⢏Ꮚ䛾᥈⣴⾲䠖஦㇟୰䛾䝆䜵䝑䝖ᩘ䛸b-tagᩘ䛻ᑐ䛩䜛2䛴㡿ᇦ䛾ᐃ⩏2b-tags≥ 3b-tags

4jets䝁䞁䝖䝻䞊䝹

䝁䞁䝖䝻䞊䝹

5jets䝁䞁䝖䝻䞊䝹

䝅䜾䝘䝹

>= 6jets䝁䞁䝖䝻䞊䝹䝅䜾䝘䝹• ྛ㡿ᇦ䛷䛾ゎᯒ䜢㐍䜑䜛䛻䛒䛯䛳䛶䚸MC䝅䝭䝳䝺䞊䝅䝵䞁䛷స䜙䜜䛯≀⌮㐣⛬䛾䝃䞁䝥䝹䜢౑⏝– ⫼ᬒ஦㇟䠖 ttbar+jets䚸ttbar+V䚸ttbar+H䚸single top䚸W/Z+jets䚸diboson– ಙྕ஦㇟䠖 Charged Higgs boson 䠄200 䡚 600 GeV䛾㛫䛾11ಶ䛾㉁㔞Ⅼ䠅䠆⫼ᬒ஦㇟䛾୍䛴䛷䛒䜛Fake lepton䛻㛵䛧䛶䛿Data䛛䜙ぢ✚䜒䜛ྛ㡿ᇦ䛻䛚䛡䜛⫼ᬒ஦㇟≀⌮㐣⛬䛾๭ྜ

6/11• ttbar+Light Flavor jets䠄ⷧ⥳䠅 瀃ttbar+Heavy Flavor jets䠄῝⥳䠇⥳䠅䛜୺䛺⫼ᬒ஦㇟

䝁䞁䝖䝻䞊䝹䝥䝻䝑䝖

7/11• ⫼ᬒ஦㇟䛾ጇᙜᛶ䛾☜ㄆ䠖 䝁䞁䝖䝻䞊䝹㡿ᇦ䛷䛾BDTධຊኚᩘ䛾ศᕸ䜢䝕䞊䝍䛸䝅䝭䝳䝺䞊䝅䝵䞁䛷ẚ㍑– 䛩䜉䛶䛾䝆䜵䝑䝖䛾PT䛾࿴– ஦㇟୰䛾䝆䜵䝑䝖㛫䛾ᗄఱᏛⓗ䛺┦㛵㛵ಀ– ୍␒㧗䛔䝆䜵䝑䝖䛾PT– b-䝣䝺䞊䝞䞊䝆䜵䝑䝖㛫䛾ᖹᆒⓗ䛺㊥㞳– ୍␒㏆䛔b-䝣䝺䞊䝞䞊䝆䜵䝑䝖ᑐ䛾୙ኚ㉁㔞

• Data䛸MC䛿ㄗᕪ䛾⠊ᅖ䛷୍⮴ᅗ䠖6jets, 2b-taggs region䛻䛚䛡䜛
BDTධຊኚᩘ䛾䝁䞁䝖䝻䞊䝹䝥䝻䝑䝖

BDT䛾ฟຊ

8/11• BDT䛿Ⲵ㟁䝠䝑䜾䝇⢏Ꮚ䛾㉁㔞Ⅼ䛤䛸䛻᭱㐺໬– ㉁㔞䛜㔜䛔䜋䛹䚸⫼ᬒ஦㇟䛸ಙྕ஦㇟䛾ศ㞳䛜ྥୖ• 䝅䜾䝘䝹㡿ᇦ䛻䛚䛡䜛BDT䛾ฟຊ䛾ศᕸ– -1䛻㏆䛵䛟䜋䛹background-like䚸+1䛻㏆䛵䛟䜋䛹signal-like䛾ฟຊ→ ⌮᝿ⓗ䛻䛿⫼ᬒ஦㇟䛜ᕥഃ䚸ಙྕ஦㇟䛜ྑഃ䛻㞟䜎䜛– Ⲵ㟁䝠䝑䜾䝇⢏Ꮚ䛾㉁㔞䜢300 GeV䠄ᕥᅗ䠅䚸䜎䛯䛿500 GeV䠄ྑᅗ䠅䛸௬ᐃ䛧䛯ሙྜ䛾ฟຊ䛾ศᕸ䠆㟷⥺䛿Dataᩘ䛻normalize䛥䜜䛶䛔䜛ಙྕ஦㇟䛛䜙䛾ᐤ୚䛾ぢ✚䜒䜚
•

9/11

䝅䝭䝳䝺䞊䝅䝵䞁䛸䝕䞊䝍䛾ᑬᗘ㛵ᩘ䛾ศᕸ䛾㐪䛔䛛䜙ᐤ୚䜢ホ౯䝁䞁䝖䝻䞊䝹㡿ᇦ䛷䛾ኚᩘ䛾☜⋡ศᕸ䝅䜾䝘䝹㡿ᇦ䛷䛾ኚᩘ䛾☜⋡ศᕸ

⣔⤫ㄗᕪ䛾☜⋡ศᕸ• 䝁䞁䝖䝻䞊䝹㡿ᇦ䛷䛿Hadronic Ht䚸䝅䜾䝘䝹㡿ᇦ䛷䛿BDT䛾ฟຊ 䛻ᑐ䛧䛶ྠ᫬䛻䝣䜱䝑䝔䜱䞁䜾

•BDTฟຊ䛾୍␒ྑ䛾䝡䞁䛻䛚䛡䜛䝕䞊䝍䛸䝅䝭䝳䝺䞊䝅䝵䞁䛾䝈䝺䛜᭱⤊ⓗ䛺⤖ᯝ䛻ຠ䛟⏕ᡂ᩿㠃✚䛻ᑐ䛩䜛ไ㝈•䝣䜱䝑䝔䜱䞁䜾᫬䛻ᚓ䜙䜜䛯ಙྕᙉᗘ䛛䜙⏕ᡂ᩿㠃✚䜢ィ⟬– Observed Limit䠄㯮䛔ᐇ⥺䠅: ᐇ㦂䝕䞊䝍䜢ᇶ䛻ᚓ䜙䜜䛯್– Expected Limit䠄㯮䛔Ⅼ⥺䠅: ⫼ᬒ஦㇟䛾䜏䛾MC䝃䞁䝥䝹䛛䜙ぢ✚䜒䜙䜜䛯್•㉥⥺䠖mH+=300 GeV䚸⏕ᡂ᩿㠃✚䛜1.65 pb䛻ᑐᛂ䛩䜛䜘䛖䛺䜲䝧䞁䝖䜢㏣ຍ䛩䜛䛣䛸䛷ᚓ䜙䜜䛯
expected limit•ᐇ㦂䝕䞊䝍䛾excess䛿Ⲵ㟁䝠䝑䜾䝇⢏Ꮚ䛾ᐤ୚䛻䜘䛳䛶䛷䛝䛯䜒䛾䛷䛿䛺䛔– ⤫ィⓗ䛺ᦂ䜙䛞䛜ཎᅉ䛷䛒䜛– 2σ⛬ᗘ䛾ᦂ䜙䛞䛿᭷ព䛷䛿䛺䛔

•MSSM䛾䝅䝘䝸䜸䠄 mhmod䠉䠅䛾୍㒊䜢Რ༷䛧䛯– 0.5 ≤ tanβ ≤ 0.6, 200 < mH+ < 300 GeV– tanβ ⋍ 0.5, 350 < mH+ < 400 GeV

10/11

䜎䛸䜑

11/11

• ATLASᐇ㦂䛻䛚䛡䜛㔜ᚰ⣔⾪✺䜶䝛䝹䜼䞊8 TeV䛷䛾㝧Ꮚ-㝧Ꮚ⾪✺䛾䝕䞊䝍䜢⏝䛔䛶Ⲵ㟁䝠䝑䜾䝇⢏Ꮚ䛾᥈⣴䜢⾜䛳䛯– ⏕ᡂ㐣⛬䠖g → ̅H+– ᔂቯ㐣⛬䠖H+ → t– ⤊≧ែ䠖 bl+ߥ q’• ⤫ィⓗ䛻᭷ព䛺⤖ᯝ䜢ᚓ䜛䛣䛸䛿䛷䛝䛺䛛䛳䛯• Observed limit䜢ᘬ䛔䛯– 200 GeV䛾㉁㔞Ⅼ䛻䛚䛔䛶6.28 pb– 600 GeV䛾㉁㔞Ⅼ䛚䛔䛶 0.24 pb• MSSM䛾䝅䝘䝸䜸䠄 mhmod䠉䝅䝘䝸䜸䠅䛾୍㒊䜢Რ༷䛧䛯– 0.5 ≤ tanβ ≤ 0.6䛻䛚䛡䜛200 < mH+ < 300 GeV䛾㡿ᇦ– tanβ ⋍ 0.5䛻䛚䛡䜛350 < mH+ < 400 GeV䛾㡿ᇦ䝞䝑䜽䜰䝑䝥

12䝠䝑䜾䝇㡯䛾ᣑᙇ䛸THDM

13/41• ᐇ㦂䛷ほ 䛥䜜䛶䛔䜛஦㇟䛸▩┪䛧䛶䛿䛔䛡䛺䛔– ρ䝟䝷䝯䞊䝍䞊䛜1– Flavor Changing Neutral Current (FCNC) 䛜Tree Level䛷Ꮡᅾ䛧䛺䛔• ρ䝟䝷䝯䞊䝍䞊䛸䝠䝑䜾䝇㡯䛾㛵ಀ• Two Higgs Doublet Model (THDM)i䠖 䝠䝑䜾䝇㡯䛾ᩘYi䠖 䝠䝑䜾䝇㡯䛾䝝䜲䝟䞊䝏䝱䞊䝆Ii䠖 䝠䝑䜾䝇㡯䛾䜰䜲䝋䝇䝢䞁– 䠎䛴䛾䝠䝑䜾䝇㡯䠖 ᶆ‽⌮ㄽ䛾䝠䝑䜾䝇㡯䜢䜒䛖䠍䛴㏣ຍ– 䠑䛴䛾䝠䝑䜾䝇⢏Ꮚ䛜ฟ⌧䠖 h0䚸H0䚸 A0䚸 H㼼– 䝰䝕䝹䜢≉ᚩ䛵䛡䜛䝟䝷䝯䞊䝍䞊䛜Ꮡᅾ• α䠖 ୰ᛶ䝇䜹䝷䞊ሙ䛾㉁㔞⾜ิ䛾ᑐゅ໬䛾ゅᗘ• tanߚ䠖 v2/v1䠄䠎䛴䛾┿✵ᮇᚅ್䛾ẚ䠅• mA䠖 CP-odd䛾୰ᛶ䝠䝑䜾䝇⢏Ꮚ䛾㉁㔞

– FCNC䛾ᢚไ䠖 䠎䛴䛾䝠䝑䜾䝇㡯䛸䝣䜵䝹䝭䜸䞁䜔䝧䜽䝍䞊䝪䝌䞁䛸䛾⤖ྜ䛻ไ㝈 → 䠐䛴䛾Type䛜Ꮡᅾ

THDM•䝠䝑䜾䝇䝫䝔䞁䝅䝱䝹•䝠䝑䜾䝇஧㔜㡯

•THDM䛾㉁㔞㡯

14

THDM䛾⤖ྜ䝍䜲䝥
•

15/

FCNC䛾ᢚไ䠖䠎䛴䛾䝠䝑䜾䝇㡯䛸䝣䜵䝹䝭䜸䞁䜔䝧䜽䝍䞊䝪䝌䞁䛸䛾⤖ྜ䛻ไ㝈– TypeI䠖∦᪉䛜䝧䜽䝍䞊䝪䝌䞁䚸䜒䛖∦᪉䛜䛩䜉䛶䛾䝣䜵䝹䝭䜸䞁䛻⤖ྜ– TypeII䠖∦᪉䛜up-type䛾䜽䜷䞊䜽䚸䜒䛖∦᪉䛜down-type䛾䜽䜷䞊䜽䛸䝺䝥䝖䞁䛻⤖ྜ– TypeIII䠖∦᪉䛜䛩䜉䛶䛾䜽䜷䞊䜽䚸䜒䛖∦᪉䛜down-type䛾䝺䝥䝖䞁䛻⤖ྜ– TypeIV䠖∦᪉䛜down-type䛾䜽䜷䞊䜽䚸䜒䛖∦᪉䛜up-type䛾䜽䜷䞊䜽䛸down-type䛾䝺䝥䝖䞁䛻⤖ྜ

MSSM䛻䛚䛡䜛Ⲵ㟁䝠䝑䜾䝇⢏Ꮚ

16/41• Minimum Super-symmetric Standard Model (MSSM)– THDM-TypeII䛾䝠䝑䜾䝇㡯䜢౑䛳䛶䛔䜛– Tree Level䛰䛸h0䛾㉁㔞䛜Z䝪䝋䞁䜘䜚ᑠ䛥䛟䛺䜛• MSSM䛷䛿SUSY⢏Ꮚ䛛䜙䛾㍽ᑕ⿵ṇ䛜㔜せ䛻䛺䜛– ୺䛻Stop⢏Ꮚ䠄䝖䝑䝥䜽䜷䞊䜽䛾SUSY䝟䞊䝖䝘䞊䠅䛛䜙䛾ᐤ୚䛜኱䛝䛔
↓Stop⢏Ꮚ䛾ྑᕳ䛝䛸ᕥᕳ䛝≧ែ䛻ᑐ䛩䜛㉁㔞⾜ิ• At: trilinear Higgs-stop coupling• μ: Higgsino mass parameter• 䛹䛾䝅䝘䝸䜸䜢㑅䜆䛛䛻䜘䛳䛶SUSY䝟䝷䝯䞊䝍䞊䛜ኚ䜟䜚䚸䝠䝑䜾䝇⢏Ꮚ䜈䛾ᐤ୚䛜ኚ䜟䜛– mhmax, mhmod+, mhmod- ➼䚻MSSM Scenario

17

4 Flavour Scheme and 5 Flavour Scheme••

4FS: 䜾䝹䞊䜸䞁ྠኈ䛾┦஫స⏝䜢グ㏙䛩䜛ᦤື䛾ィ⟬㐣⛬䛻䛚䛔䛶䚸b-quark䛜ฟ⌧䛩䜛
5FS䠖PDF䛻b-quark䛜䝟䞊䝖䞁䛸䛧䛶ྵ䜎䜜䛶䛔䜛

4FS

•

5FS

Santander matching䠖4FS䛸5FS䛾cross section䛾ィ⟬⤖ᯝ䜢䛭䜜䛮䜜ln(mH+/mb)→䠍 䛸 ln(mH+/mb)→∞ 䛾ᴟ㝈䛷ᚓ䜙䜜䛯䜒䛾䛸ゎ㔘䛧䛶㊊
䛧ྜ䜟䛫䜛᪉ἲ

18Ⲵ㟁䝠䝑䜾䝇⢏Ꮚ䛾⏕ᡂ᩿㠃✚㽢ᔂቯẚ

19• ⏕ᡂ㐣⛬䠖4FS䛸5FS䛾㊊䛧ྜ䜟䛫• ᔂቯ㐣⛬䠖top-quark䛸bottom-quarkⲴ㟁䝠䝑䜾䝇⢏Ꮚ䛾ᔂቯẚ

+
20

21

Chargino䛸neutralino•ẚ㍑ⓗᑠ䛥䛔tanβ䛾㡿ᇦ䛷䚸Ⲵ㟁䝠䝑䜾䝇⢏Ꮚ䛜chargino䛸neutralino䛻ᔂቯ䛩䜛๭ྜ䛜ቑ䛘䜛

•Chargino䛾㉁㔞㡯

•Neutralino䛾㉁㔞㡯㐣ཤ䛾᥈⣴⤖ᯝ LEP result䠄e+e- → H+H-, 㻴㻗 䊻㻌߬+ߥ䠅22㐣ཤ䛾᥈⣴⤖ᯝ CDF result (t → H+b, 㻴㻗 䊻㻌cs)̅

23

ATLAS result 䠄㻴㻗 䊻㻌߬+ߥ䠅•Ⲵ㟁䝠䝑䜾䝇⢏Ꮚ䛾㉁㔞-tanβᖹ㠃ୖ䛾᤼㝖䛥䜜䛯㡿ᇦ

24

CMS result (combine)•Ⲵ㟁䝠䝑䜾䝇⢏Ꮚ䛾㉁㔞-tanβᖹ㠃ୖ䛾᤼㝖䛥䜜䛯㡿ᇦ

25

Large Hadron Collider (LHC) ຍ㏿ჾ

26/41• LHCຍ㏿ჾ– ඲࿘䠖27 km– 㝧Ꮚ-㝧Ꮚ⾪✺– 㔜ᚰ⣔⾪✺⣔䜶䝛䝹䜼䞊䠖14 TeV– ▐㛫䝹䝭䝜䝅䝔䜱䞊䠖1034 cm-2s-1– Bunchᩘ䠖2808/beam– Protonᩘ䠖1.1㽢1011/bunch• 㝧Ꮚ䛾ຍ㏿㐣⛬– Ỉ⣲ཎᏊ䛾㟁㞳䠄Proton ⏕ᡂ䠅 → Linac䠄50 MeV䠅 → Proton Synchrotron
booster䠄1.4 GeV䠅→ Proton Synchrotron䠄25 GeV䠅 → Super Proton
Synchrotron䠄450 GeV䠅 → LHC䠄7TeV䠅

㻭㻌㼀㼛㼞㼛㼕㼐㼍㼘㻌㻸㻴㻯㻌㻭㼜㼜㼍㼞㼍㼠㼡㻿 㻔㻭㼀㻸㻭㻿㻕 ᳨ฟჾ

27 /41• ᕧ኱䛺」ྜⓗ᳨ฟჾ– 㔜䛥䠖⣙7000 䝖䞁– 㧗䛥䠖25 m– 㛗䛥䠖44 m• ᕧ኱䛺☢▼䠖– 䝋䝺䝜䜲䝗☢▼→ෆ㒊㣕㊧᳨ฟჾ
– 䝖䝻䜲䝗☢▼→䝭䝳䞊䜸䞁᳨ฟჾ• ᵝ䚻䛺᳨ฟჾ䜢⏝䛔䛶䚸⢏Ꮚ䛾఩⨨䜔䜶䝛䝹䜼䞊䜢ᐃ– ෆ㒊㣕㊧᳨ฟჾ䚸㟁☢䜹䝻䝸䞊䝯䞊䝍䞊䚸䝝䝗䝻䞁䜹䝻䝸䞊䝯䞊䝍䞊䚸䝭䝳䞊䜸䞁᳨ฟჾ䛺䛹

• ᳨ฟჾ䛾㡿ᇦ䛿୺䛻஧䛴䛻ศ㢮䠖barrel䠄୰ኸ䠅䚸end-cap䠄๓᪉䛸ᚋ᪉䠅䝺䝥䝖䞁䝖䝸䜺䞊

28 /41• 㟁Ꮚ䝖䝸䜺䞊
– L1䝖䝸䜺䞊
• 䜹䝻䝸䞊䝯䞊䝍䞊䛾η-Φᖹ㠃ୖ䛻䛷䛝䛯䝍䝽䞊䜢䛒䜛㡿ᇦෆ䛷㊊䛧ྜ䜟䛫䛶䜽䝷䝇䝍䞊䜢స䜛• 䜽䝷䝇䝍䞊䛾䜶䝛䝹䜼䞊䛜䛧䛝䛔್௨ୖ䚸䜎䛯䛿䜽䝷䝇䝍䞊୰ᚰ㒊䛾࿘䜚䛻䛒䜛䝍䝽䞊䛾䜶䝛䝹䜼䞊䛾࿴䛜䛧䛝䛔್௨ୗ䛺䜙䜀㏻䛩

– High Level䝖䝸䜺䞊• L1䝖䝸䜺䞊䛷ᚓ䜙䜜䛯䜽䝷䝇䝍䞊䛾఩⨨䜔䜶䝛䝹䜼䞊䛾᝟ሗ䜢ᇶ䛻䚸ෆ㒊㣕㊧᳨ฟჾ䜔䜹䝻䝸䞊䝯䞊䝍䞊䛾ᒙ䛤䛸䛻ᚓ䜙䜜䛯᝟ሗ䜒ຍ䛘䛶ุ᩿䛩䜛• 䝭䝳䞊䜸䞁䝖䝸䜺䞊– L1䝖䝸䜺䞊• ᶓษ䛳䛯ᒙ䛾ᩘ䛸✀㢮䚸䜎䛳䛩䛠㣕䜣䛷⾜䛳䛯䛸䛝䛾䝠䝑䝖Ⅼ䛸ᐇ㝿䛾䝠䝑䝖Ⅼ䛸䛾䝈䝺䛛䜙㐠ື㔞䜢ィ⟬䛩䜛䚹䛧䛝䛔್䜢㉸䛘䛶䛔䜜䜀㏻䛩

– High Level䝖䝸䜺䞊• L1䝖䝸䜺䞊䛷ᚓ䜙䜜䛯䝠䝑䝖Ⅼ䛸㐠ື㔞䜢ᇶ䛻㣕㊧䜢ィ⟬䛩䜛䚹䛥䜙䛻䚸䝭䝳䞊䜸䞁᳨ฟჾ䛸ෆ㒊㣕㊧᳨ฟჾ䛷 ᐃ䛥䜜䛯㣕㊧䛸䛾ᩚྜᛶ䜢䛸䜛䚹䛭䜜䜙㣕㊧䛾᝟ሗ䜢ᇶ䛻ุ᩿䛩䜛⢏Ꮚྠᐃ (Particle ID)

29 /41• ᳨ฟჾ䛛䜙䛾᝟ሗ䜢⤌䜏ྜ䜟䛫䛶䚸⢏Ꮚ䜢ྠᐃ䛩䜛– 㟁Ꮚ䠖ෆ㒊㣕㊧᳨ฟჾ䛸㟁☢䜹䝻䝸䞊䝯䞊䝍䞊– 䝭䝳䞊䜸䞁䠖ෆ㒊㣕㊧᳨ฟჾ䛸䝭䝳䞊䜸䞁᳨ฟჾ– 䝆䜵䝑䝖䠄䜽䜷䞊䜽䠅䠖ෆ㒊㣕㊧᳨ฟჾ䛸஧䛴䛾䜹䝻䝸䞊䝯䞊䝍䞊• b䝣䝺䞊䝞䞊䝆䜵䝑䝖䠖ෆ㒊㣕㊧᳨ฟჾ– Missing transverse energy䠄䝙䝳䞊䝖䝸䝜䠅䠖඲䛶䛾᳨ฟჾ෌ᵓᡂ䛥䜜䛯㟁Ꮚ䛻ᑐ䛩䜛せồ

30 /41䛔䛟䛴䛛䛾᮲௳䜢せồ䛩䜛䛣䛸䛷䚸ゎᯒ䛻㐺䛧䛯㟁Ꮚ䜢㑅䜃ฟ䛩•••|η| < 2.47 䠄1.37 < |η| <1.52䜢㝖䛟䠅ET > 25 GeV
Single lepton trigger (2✀㢮)– ET䛻ᑐ䛧䛶㧗䜑䛾䛧䛝䛔್䠄60 GeV䠅– ET䛻ᑐ䛧䛶ప䜑䛾䛧䛝䛔್䠄24 GeV䠅䠇䝝䝗䝻䞁䜹䝻䝸䞊䝯䞊䝍䞊䜔㟁Ꮚ䛾࿘䜚䛷ⴠ䛸䛥䜜䛯䜶䝛䝹䜼䞊䛜ᑠ䛥䛔•

Tight selection– 䝝䝗䝻䞁䜹䝻䝸䞊䝯䞊䝍䞊䛻䛿䜏ฟ䛧䛯䜶䝛䝹䜼䞊䛾㔞– 㣕㊧䛸䜽䝷䝇䝍䞊䛾୰ᚰⅬ䛸䛾୍⮴ලྜ– ෆ㒊㣕㊧᳨ฟჾ䛷䛾䝠䝑䝖ᩘ– 㟁☢䜹䝻䝸䞊䝯䞊䝍䞊䛾ᒙ䛤䛸䛻ⴠ䛸䛧䛶䛔䛳䛯䜶䝛䝹䜼䞊䛾㔞•|Z0| < 2 mm 䠄Z0=Z᪉ྥ䛻䛚䛡䜛primary vertex䛸㣕㊧䛸䛾᭱᥋㏆㊥㞳䠅– ୺せᔂቯⅬ⏤᮶䛾㟁Ꮚ䛷䛒䜛䛣䛸䜢せㄳ•

Isolation cut– 㟁Ꮚ䛾࿘䜚䛻䛒䜛㣕㊧䛾㐠ື㔞䜔䜽䝷䝇䝍䞊䛾䜶䝛䝹䜼䞊䛾࿴䛜ᑠ䛥䛔• ΔR=0.3௨ෆ䛾PT䛾࿴䛜6 GeV௨ୗ䚸ΔR=0.2௨ෆ䛾ET䛾࿴䛜6 GeV௨ୗ෌ᵓᡂ䛥䜜䛯䝭䝳䞊䜸䞁䛻ᑐ䛩䜛せồ

31 /41䛔䛟䛴䛛䛾᮲௳䜢せồ䛩䜛䛣䛸䛷䚸ゎᯒ䛻㐺䛧䛯䝭䝳䞊䜸䞁䜢㑅䜃ฟ䛩•••|η| < 2.5
PT > 25 GeV
Single lepton trigger (2✀㢮)– PT䛻ᑐ䛧䛶㧗䜑䛾䛧䛝䛔್䠄36 GeV䠅– PT䛻ᑐ䛧䛶ప䜑䛾䛧䛝䛔್䠄24 GeV䠅䠇䝭䝳䞊䜸䞁࿘䜚䛾㣕㊧䛾㐠ື㔞䛾࿴䛜ᑠ䛥䛔

•Combined and Tight selection– 䝭䝳䞊䜸䞁᳨ฟჾ䛷 ᐃ䛥䜜䛯㣕㊧䛸ෆ㒊㣕㊧᳨ฟჾ䛷䛜୍⮴– ෆ㒊㣕㊧᳨ฟჾ䛷䛾䝠䝑䝖ᩘ••ᐃ䛥䜜䛯㣕㊧|Z0| < 2 mm
Isolation cut– 䝭䝳䞊䜸䞁䛾࿘䜚䛻䛒䜛㣕㊧䛾㐠ື㔞䛾࿴䛜ᑠ䛥䛔• ΔR= 10 GeV/PT ௨ෆ䛻䛒䜛㣕㊧䛾㐠ື㔞䛾࿴䛜䚸PT䛾5 %௨ୗ෌ᵓᡂ䛥䜜䛯䝆䜵䝑䝖䛻ᑐ䛩䜛せồ

32 /41䛔䛟䛴䛛䛾᮲௳䜢せồ䛩䜛䛣䛸䛷䚸ゎᯒ䛻㐺䛧䛯䝆䜵䝑䝖䜢㑅䜃ฟ䛩• ௨ୗ䛾᮲௳䜢せồ– |η| < 2.5– PT > 25 GeV– Jet Vertex Fraction䠖 䝆䜵䝑䝖୰䛻ྵ䜎䜜䛶䛔䜛㣕㊧䛾䛖䛱䚸୍䛴䛾୺せᔂ
ቯⅬ䛛䜙䛾ᐤ୚䜢♧䛩• 䝟䜲䝹䜰䝑䝥䜲䝧䞁䝖䛛䜙䛾ᐤ୚䜢ῶ䜙䛩• PT<50 GeV䛛䛴|η|<2.4䛾䝆䜵䝑䝖䛻ᑐ䛧䛶|JVF|>0.5䜢せồ

•

ኚᩘ䛾ㄝ᫂
•
•
•
•
•

jeti䠖䜹䝑䝖䛾ᑐ㇟䛸䛺䛳䛯jet
PVj䠖䛒䜛୍䛴䛾୺せᔂቯⅬk䠖jeti䛻ྵ䜎䜜䜛PVj⏤᮶䛾㣕㊧䛻ᑐ䛩䜛ῧ䛘Ꮠn䠖୺せᔂቯⅬ䛻ᑐ䛩䜛ῧ䛘Ꮠl䠖jeti䛻ྵ䜎䜜䜛PVn⏤᮶䛾㣕㊧䛻ᑐ䛩䜛ῧ䛘Ꮠb䝣䝺䞊䝞䞊䝆䜵䝑䝖33 /41• b䝣䝺䞊䝞䞊ྠᐃ– MV1: ௨ୗ䛾ኚᩘ䜢ከኚᩘゎᯒ䛻⏝䛔䛶b䝣䝺䞊䝞䞊ྠᐃ䜢⾜䛖• ୺せᔂቯⅬ䛻ᑐ䛩䜛㣕㊧䛾⾪✺ಀᩘ• 2ḟᔂቯⅬ䛻㛵䛩䜛ኚᩘ• 䝆䜵䝑䝖୰䛻ྵ䜎䜜䜛c䝣䝺䞊䝞䞊䝝䝗䝻䞁䜔b䝣䝺䞊䝞䞊䝝䝗䝻䞁䛾ᔂቯ䛾ᗄఱᏛⓗ≉ᚩ– 70 %䛾☜⋡䛷䝪䝖䝮䜽䜷䞊䜽⏤᮶䛾䝆䜵䝑䝖䜢ྠᐃ䛩䜛䜒䛾䜢౑⏝• b䝣䝺䞊䝞䞊ྠᐃ䛾㍑ṇ
– 䝖䝑䝥䜽䜷䞊䜽ᑐ䛾dileptonᔂቯ஦㇟䜢⏝䛔䛶ᐇ㦂䝕䞊䝍䛸MC䝅䝭䝳䝺䞊䝅䝵䞁㛫䛾ྠᐃ䛾efficiency䜢 ᐃ䚸PT䝡䞁䛤䛸䛻䝈䝺䜢⿵ṇ• b䝣䝺䞊䝞䞊䝆䜵䝑䝖䛾䜶䝛䝹䜼䞊㍑ṇ– 㣕㊧䛛䜙ồ䜑䛯㐠ື㔞䛸䜹䝻䝸䞊䝯䞊䝍䞊䛷 ᐃ䛥䜜䛯䜶䝛䝹䜼䞊䛾ẚ䜢⏝䛔䛶ᐇ㦂䝕䞊䝍䛸䝅䝭䝳䝺䞊䝅䝵䞁䛾䝈䝺䜢⿵ṇ䛩䜛– 䝅䝭䝳䝺䞊䝅䝵䞁䝺䝧䝹䛷b䝣䝺䞊䝞䞊䝝䝗䝻䞁䛾䝉䝭䝺䝥䝖䝙䝑䜽ᔂቯ䛻ᑐ䛩䜛䜶䝛䝹䜼䞊䛾㍑ṇ䜢䛩䜛

B-tag algorithm䛾ධຊኚᩘ••ྑᅗ䠖B-tag䜰䝹䝂䝸䝈䝮䛻౑䜟䜜䜛ኚᩘ䛾ᅗኚᩘ䛾B-jet䛸light-jet䛻ᑐ䛩䜛ศᕸ䛾㐪䛔䛛䜙ุู• IPD3䠖impact parameter䛻㛵ಀ䛧䛯ኚᩘ䜢౑䛳䛯䜰䝹䝂䝸䝈䝮• Signed transverse impact parameter significance (d0/σd0)• Longitudinal impact parameter significance (z0/σz0)• SV1: secondary vertex䛻㛵䛩䜛ኚᩘ䜢౑䛳䛯䜰䝹䝂䝸䝈䝮• Decay length significance (L3D/σL3D)• invariant mass of all tracks associatedto the vertex• the ratio of the sum of the energies of the tracks in in thevertex to the sum of the energies of all tracks in the jet 䛺䛹• JetFitter䠖䝆䜵䝑䝖୰䛻䛚䛡䜛b-hadron䜔c-hadron䛾ᔂቯ䛻㛵䛩䜛ኚᩘ䜢౑䛳䛯䜰䝹䝂䝸䝈䝮• SV1䛷౑䜟䜜䛶䛔䜛ኚᩘ䛻ఝ䛯ኚᩘ䜢౑⏝• 䠇 the flight length significances of the vertices
34

MV1䜰䝹䝂䝸䝈䝮䛾performance••

MV1䠖neural net work based algorithm is based on multivariate techniques
which utilize the output weights of IP3D, SV1 and JetFitterCombNN algorithm
70 % efficiency䠖䝅䝭䝳䝺䞊䝅䝵䞁䛾ttbar䝃䞁䝥䝹䛻䛚䛡䜛Pt >20 GeV ௨ୖ䚸η<
2.5௨ෆ䛾䛩䜉䛶䛾b-jet䛻ᑐ䛧䛶70 %䛾☜⋡䛷tag䚹
••

Ttbar䛾single-lepton䛸dileptonᔂቯ஦㇟䜢౑⏝ୗᅗ䠖b-tag effigiency 䛸 rejection 䛾㛵ಀ䚹䠆jet䛾PT䛿15 GeV௨ୖ– Light-jet䜢Mis-tag䛩䜛☜⋡䛿1%– C-jet䜢mis-tag䛩䜛☜⋡䛿20%

35

b-tag䛾efficiency䛾㍑ṇ 䠄result䠅• ᭱⤊ⓗ䛻efficiency䛿jet䛾Pt bin䛤䛸䛻㍑ṇ䛥䜜䜛• ㍑ṇ䛿scale factor (efficiencydata/efficiencyMC)䛸䛧䛶୚䛘䜙䜜䜛
36

Missing Transverse Energy (MET)

37 /41䝙䝳䞊䝖䝸䝜䛜ᣢ䛳䛶⾜䛳䛯ศ䛾䜶䝛䝹䜼䞊䛜䚸x-yᖹ㠃ୖ䛷䛾䜶䝛䝹䜼䞊䛾ᦆኻ䛸䛧䛶ほ 䛥䜜䜛•

MET䛿䜹䝻䝸䞊䝯䞊䝍䞊⏤᮶䛾䜒䛾䛸䝭䝳䞊䜸䞁⏤᮶䛾䜒䛾䛻ศ䛡䜙䜜䜛•䜹䝻䝸䞊䝯䞊䝍䞊⏤᮶䠖 MET䜢⢏Ꮚ䛾✀㢮䛤䛸䛻ィ⟬䛧䚸ప䛔㐠ື㔞䛾䝆䜵䝑䝖䜔䜽䝷䝇䝍䞊䛛䜙䛿䜏ฟ䛧䛯䜶䝛䝹䜼䞊䜒⪃៖䛧䛶䛔䜛•䝭䝳䞊䜸䞁⏤᮶䠖 䝭䝳䞊䜸䞁䛾㣕㊧䛛䜙ィ⟬䛧䛯㐠ື㔞䛛䜙ồ䜑䜛

㔜」䛾㝖ཤ䛸஦㇟㑅ู

38 /41• 㔜」䛾㝖ཤ䠖 ゎᯒ䛻౑⏝䛩䜛䛾䛻㐺䛥䛺䛔⢏Ꮚ䜢㝖ཤ– 䝆䜵䝑䝖䛛䜙ฟ䛶䛝䛯䝭䝳䞊䜸䞁䜔㟁Ꮚ– 㟁Ꮚ䜢䝆䜵䝑䝖䛸䛧䛶ㄗྠᐃ䛧䛯䜒䛾– 㟁Ꮚ䛸䝭䝳䞊䜸䞁䛷㣕㊧䛜୍⮴䛧䛶䛔䜛ሙྜ䛿䚸䛭䛾஦㇟䜢㝖ཤ• ஦㇟㑅ู– ಙྕ㐣⛬䛾⤊≧ែ䠖䝺䝥䝖䞁1䛴䚸䝆䜵䝑䝖5䛴䠄3䛴䛿b 䜽䜷䞊䜽⏤᮶䠅䚸MET– ஦㇟䛻ᑐ䛧䛶௨ୗ䜢せㄳ• Single lepton trigger• ᑡ䛺䛟䛸䜒䠍䛴䛾primary vertex䛛䜙䠐䛴௨ୖ䛾෌ᵓᡂ䛥䜜䛯track䛜ฟ䛶䛔䜛• pT>25 GeV䚸䜒䛧䛟䛿ET>25 GeV䛾bb䝺䝥䝖䞁䜢䠍䛴
• pT>25 GeV䛾䝆䜵䝑䝖䜢䠐䛴௨ୖ• ᑡ䛺䛟䛸䜒䠎䛴䛾䝆䜵䝑䝖䛜qQb-tag䛥䜜䛶䛔䜛b

Monte Carlo 䝅䝭䝳䝺䞊䝅䝵䞁

39 /41• 㝧Ꮚ-㝧Ꮚ⾪✺஦㇟– ⾪✺䛧䛯㝧Ꮚ୰䛻ྵ䜎䜜䜛䝟䞊䝖䞁ྠኈ䛜⃭䛧䛟┦஫స⏝䛩䜛– ᙎ䛝ฟ䛥䜜䛯䝟䞊䝖䞁䛛䜙䜾䝹䞊䜸䞁䛜ᨺฟ䛥䜜䛶䚸䝟䞊䝖䞁䝅䝱䝽䞊䜢ᙧᡂ䛧䛶䛔䛟– ⃭䛧䛟┦஫స⏝䛧䛺䛛䛳䛯䝟䞊䝖䞁ྠኈ䛜ẚ㍑ⓗప䛔䜶䝛䝹䜼䞊䝇䜿䞊䝹䛷┦஫స⏝䛩䜛
– 䝟䞊䝖䞁䛜䝝䝗䝻䞁໬䛩䜛䚹ᑑ࿨䛾▷䛔䝝䝗䝻䞁䛿ᔂቯ䛩䜛– 䝝䝗䝻䞁䜔䝺䝥䝖䞁䛜᳨ฟჾ䛸┦஫స⏝䛩䜛• 䜲䝧䞁䝖䝆䜵䝛䝺䞊䝍䞊– ⃭䛧䛟┦஫స⏝䛩䜛㒊ศ• 䝟䞊䝖䞁䝅䝱䝽䞊䝅䝭䝳䝺䞊䝍䞊– 䝟䞊䝖䞁䝅䝱䝽䞊䜔ప䛔䜶䝛䝹䜼䞊䝇䜿䞊䝹䛷䛾┦஫స⏝• Parton Distribution Function– ᐇ㦂䝕䞊䝍䜢ᇶ䛻グ㏙

Renormalization scale䛸Factorization scale• Renormalization scale (μR)
– QCD䛾⤖ྜᐃᩘ䛾ᙉ䛥䜢ィ⟬䛩䜛㝿䚸⧞䜚㎸䜏䛻౑䛳䛯䜶䝛䝹䜼䞊䝇䜿䞊䝹• Factorization scale (μF)– hard interaction䛸soft interaction䜢ศ䛡䜛䝇䜿䞊䝹䚹䛴䜎䜚䚸μF௨ୖ䛾䜶䝛䝹䜼䞊䝇䜿䞊䝹䛷tree level䛾ィ⟬䛜⾜䜟䜜䜛• αs䛾䝇䜿䞊䝹౫Ꮡᛶ– ᐇ㦂䛷ᚓ䜙䜜䛯್䜢ᇶ䛻Ỵᐃ䛥䜜䜛– ᖹᆒ್䠖 αs(MZ) = 0.1181 ±0.0011•

Partonྠኈ䛾cross section40䝅䝭䝳䝺䞊䝅䝵䞁䛻⏝䛔䛯PDF

41• Fixed target䜔collider䛾ᐇ㦂䝕䞊䝍䜢౑⏝– Electroproduction: electron, muon and neutrino deep-inelastic scattering data
– Hadroproduction: Drell-Yan ஦㇟䜔jet production 䛾䝕䞊䝍• 䝟䞊䝖䞁䛾ศᕸ䜢Ỵᐃ䛩䜛㝿䛻౑䛳䛯䝟䝷䝯䝍䞊䛾✀㢮䛺䛹䛜㐪䛖
– MSTW: three lightest quark
flavours and anti-flavours and
28 free parameters of gluon– CTEQ and CT10: the twolightest flavours and antiflavours, the total strangeness,and the gluon. The number ofthe free parameter in CT10 is26, and the number in CTEQ is
22.

MC䝃䞁䝥䝹୍ぴ•

42 /41MC䝃䞁䝥䝹䛸䚸䛭䛾䝃䞁䝥䝹䜢స䜛㝿䛻౑䜟䜜䛯䜲䝧䞁䝖䝆䜵䝛䝺䞊䝍䞊䛸䝟䞊䝖䞁䝅䝱䝽䞊䝅䝭䝳䝺䞊䝍䞊䛾୍ぴ– ttbar+jets䠖 Powheg+Pythia• 䝆䜵䝑䝖䛾䜒䛸䛸䛺䛳䛯䝟䞊䝖䞁䛾䝣䝺䞊䝞䞊䛻䜘䜚ศ㢮• ttbar+b-jets䚸ttbar+c-jets䚸 ttbar+light-jets– ttbar+V䠖 Madgraph+Pythia– ttbar+H䠖 Powhel+Pythia– Single top䠖 Powheg+Pythia– W/Z+jets䠖 Alpgen+Pythia– Diboson䠖 Alpgen+Herwig– Charged Higgs䠖 Powheg+Pythia• 200 䡚 600 GeV䛾㛫䛾11ಶ䛾㉁㔞Ⅼ•

Normalization䛿ィ⟬䛥䜜䛯⏕ᡂ᩿㠃✚䛻ྜ䛖䜘䛖䛻⾜䜟䜜䜛– 䛯䛰䛧䚸௨ୗ䛾䝃䞁䝥䝹䛿ᐇ㦂䝕䞊䝍䜔䝅䝭䝳䝺䞊䝅䝵䞁䛾ศᕸ䛻ྜ䛖䜘䛖䛻⾜䜟䜜䜛
• ttbar+b-jets, ttbar+c-jets, ttbar+light-jets, W/Z+jets•⣔⤫ㄗᕪ䛾ホ౯䛾䛯䜑䚸⤌䜏ྜ䜟䛫䜢ኚ䛘䛯䝃䞁䝥䝹䜒Ꮡᅾ䛩䜛

ttbar + jets process䠇reweighting• 䝆䜵䝑䝖䛾䝣䝺䞊䝞䞊䛻䜘䛳䛶ศ䛡䜛䚹Particle jet䛸䜽䜷䞊䜽䛸䛾
matching䜢䛩䜛(ΔR<0.4)– Top quark⏤᮶䛷䛺䛔b-quark䛛䜙Ⓨ⏕䛧䛯䝆䜵䝑䝖䛜䛒䜜䜀ttbar+b-jets– c-quark⏤᮶䛷䛒䜜䜀䚸ttbar+c-jets– Light-quarks䛷䛒䜜䜀䚸ttbar+light jets

• ttbar sequential Pt reweighting– Ttbar+c-jets䛸ttbar+Light-jets䛻㛵䛧䛶䛿䝕䞊䝍䛾ศᕸ䛻ྜ䜟䛫䜛• Reweighting䛾䝣䜯䜽䝍䞊䛿7 TeV䛾䝕䞊䝍䜢⏝䛔䛯ttbar differential crosssection measurement䛾⤖ᯝ䛛䜙ᑟฟ䛧䛯– Top Pt reweighting: MC䛸䝕䞊䝍䛷jet䛾kinematics䛾ศᕸ䛜ྜ䛖– Ttbar Pt reweighting: MC䛸䝕䞊䝍䛷jet䛸b-tagged jet䛾ᩘ䛾ศᕸ䛜ྜ䛖– Ttbar Pt reweighting䜢䛛䛡䛶䛛䜙䚸䛭䜜䛻ᙳ㡪䜢୚䛘䛺䛔䜘䛖䛻top Pt
reweighting䜢䛛䛡䜛䛣䛸䛷䚸jet䛾kinematics䛸ᩘ䛾ศᕸ䛜ྜ䛖䜘䛖䛻䛩䜛

43

ttbar differential cross section measurement at 7 TeV

44

ttbar+bb reweighting•䝅䝭䝳䝺䞊䝅䝵䞁䛾ศᕸ䛻䛒䜟䛫䜛– powheg+pythia䛷䛿additional jet䛜䝟䞊䝖䞁䝅䝱䝽䞊䝅䝭䝳䝺䞊䝍䞊䛻䜘䜛ィ⟬䛾㐣⛬䛷䛧䛛ฟ䛺䛔䛯䜑䚸ẚ㍑ⓗ㐠ື㔞䛜ᑠ䛥䛔• 䜾䝹䞊䜸䞁䛛䜙b-quark䛜collinear䛻㏆䛔ᙧ䛷ศ䛛䜜䜛㐣⛬䛜グ㏙䛧䛵䜙䛔– NLO SHERPA with OPENLOOP 䜢⏝䛔䛶䚸Matrix-element level䛷グ㏙䛥䜜䜛䜘䛖䛺ẚ㍑ⓗ㧗䛔䜶䝛䝹䜼䞊䛾䜾䝹䞊䜸䞁ᨺฟ䜢ホ౯
• collinear䛻㏆䛔ᙧ䛷ᨺฟ䛥䜜䜛䜲䝧䞁䝖䠄1䛴䛾particle jet䛻2䛴䛾b-quark䛜䝬䝑䝏䛩䜛䠅䜢グ㏙䛷䛝䜛

– Reweighting䛻౑䛖ኚᩘ• top-quark䛾Pt• ttbar system䛾Pt• top-quark⏤᮶䛷䛺䛔䠎䛴䛾䝆䜵䝑䝖䛜స䜛⣔䛾Pt• top-quark⏤᮶䛷䛺䛔2䛴䛾䝆䜵䝑䝖㛫䛾㊥㞳䠄ΔRjj䠅

45

SHERPA䠇OPENLOOPS䝃䞁䝥䝹䛾Kinematics䛾ศᕸ46

Z/W+jets• W/Z+jets Pt reweighting– LO generator䜢౑⏝䛧䛶䛔䜛䛯䜑䚸㧗ḟ䛾QCD䜔EW䛾┦஫స⏝䛾グ㏙䛜㞴䛧䛔
– W/Z boson䛾Pt䛾ศᕸ䜢䝕䞊䝍䛻ྜ䛖䜘䛖䛻reweighting• 7 TeV䛾䝕䞊䝍䜢౑⏝• Heavy Flavour overlap removal– Parton shower䛾Ⓨᒎ䛻䜘䛳䛶⏕䛨䛯Heavy Flavour parton䛸
generator level䛷స䛳䛯Heavy Flavour parton䛸䛾༊ู䜢⾜䛖– Heavy Flavour䛾parton㛫䛾㊥㞳䠄ΔR䠅䛜0.4௨ୖ㞳䜜䛶䛔䜜䜀䚸
W/Z+Heavy Flavour jets䚹䜎䛯䚸0.4௨ୗ䛷䛒䜜䜀䚸W/Z+Light Flavour
jets䛸䛩䜛

47

Z+jets production cross section measurement at 7 TeV>= 1jet= 1jet48

Fake Lepton (matrix method)•

Matrix method䠖䝺䝥䝖䞁䛻ᑐ䛩䜛㉁䛾せồ䜢ኚ䛘䛯᫬䛾ᮏ≀䛸ഇ≀䛾䝺䝥䝖䞁䛾ᩘ䛾ኚ໬䜢ホ౯䛧䚸䛭䜜䜢⏝䛔䛶ഇ≀䛾䝺䝥䝖䞁䛛䜙䛾ᐤ୚䜢ぢ✚䜒䜛•

Efficiency䛿䝺䝥䝖䞁䛾㐠ື㔞䜔䜲䝧䞁䝖୰䛻ྵ䜎䜜䜛b-jet䛾ᩘ䛺䛹䛻౫Ꮡ䛩䜛䚹䜘䛳䛶䚸efficiency䛿䛭䜜䜙䛾ኚᩘ䛾㛵ᩘ䛸䛧䛶グ㏙䛥䜜䜛

x: discrete variables y: continuous variables
49

Fake lepton (event selection)•

Sample䜢䝁䞁䝖䝻䞊䝹㡿ᇦ䛸䝅䜾䝘䝹㡿ᇦ䛻ศ䛡䜛– 䝁䞁䝖䝻䞊䝹㡿ᇦ䠖fake 䛸 real efficiency䜢ぢ✚䜒䜛䚹• Single lepton channel䛸dilepton channel䛻ศ䛡䜛– 䝅䜾䝘䝹㡿ᇦ䠖validation䛸systematics䛾ホ౯䚹Top-quark䜢ྵ䜐䜲䝧䞁䝖䛜୺䚹• Single lepton channel䛸dilepton channel䛻ศ䛡䜛

•Control region (dilepton channel): real efficiency䜢ᘬ䛝ฟ䛩
– Tag-and-probe method䛷౑⏝䛧䛯䜲䝧䞁䝖䝉䝺䜽䝅䝵䞁䛸ྠ䛨

•Control region (single lepton channel): fake efficiency䜢ᘬ䛝ฟ䛩– Only one loose lepton and at least one jet– e channel: MTW < 20 GeV, MET+MTW < 60 GeV– mu channel: |d0sig|>550

Fake lepton (efficiency for e+jets)51ྛ㡿ᇦ䛾䜲䝧䞁䝖ᩘ• ୍␒ྑ䛾ิ䛜䝅䜾䝘䝹㡿ᇦ䚸ᕥ䛾4䛴䛾ิ䛜䝁䞁䝖䝻䞊䝹㡿
ᇦ• ttbar+Heavy
Flavour jets䛸
ttbar+Light
Flavour Jets䛜୺䛺⫼ᬒ஦㇟

52 /41ከኚᩘゎᯒ (Boosted Decision Trees)•

53 /41᮲௳䜢䛛䛡䛶ྲྀᤞ㑅ᢥ– ಙྕ஦㇟䛸⫼ᬒ஦㇟䜢䛝䜜䛔䛻ศ䛡䜛ኚᩘ䛜䛺䛔– ⫼ᬒ஦㇟䛸ඹ䛻ಙྕ஦㇟䜒ᤞ䛶䛶䛧䜎䛖ྍ⬟ᛶ䛜㧗䛔

•

BDT䛻䜘䜛ಙྕ஦㇟䛸⫼ᬒ஦㇟䛾ศ㞳– 䛔䛟䛴䛛䛾ኚᩘ䜢ධຊ䛩䜛䛣䛸䛷䚸⫼ᬒ஦㇟䛸ಙྕ஦㇟䛾ศ㞳䜢ྥୖ– ඲䛶䛾஦㇟䜢᭷ຠⓗ䛻฼⏝䛩䜛䛣䛸䛜䛷䛝䜛•

Decision Tree 䜰䝹䝂䝸䝈䝮– ⫼ᬒ஦㇟䛸ಙྕ஦㇟䛜ΰ䛦䛳䛯䝃䞁䝥䝹䜢୍␒ศ㞳䛷䛝䜛ኚᩘ䜢⏝䛔䛶ศ䛡䜛䚹䛣䛾సᴗ䜢ศ䛡䛯䝃䞁䝥䝹䛻ᑐ䛧䛶෌䜃⾜䛳䛶䛔䛟– ඲䛶䛾஦㇟䛜background-like䛸signal-like䛾㡿ᇦ䛻ศ䛡䜙䜜䜛䚹䛭䜜䛮䜜䛾㡿ᇦ୰䛾䜲䝧䞁䝖䛻ᑐ䛧䛶㔜䜏䛜୚䛘䜙䜜䚸䛭䛾⤖ᯝ䛜ฟຊ䛸䛧䛶ᚓ䜙䜜䜛•

Boosting– 㛫㐪䛳䛶ศ䛡䜙䜜䛯஦㇟䛾䛣䛸䜒⪃៖䛧䛶䚸᪂䛯䛻Decision Tree䜢స䜛䚹䛣䛾సᴗ䜢⧞䜚㏉䛧䚸኱㔞䛾Decision Tree䜢స䜛䚹䛭䜜䜙䛾ฟຊ䛾ᖹᆒ್䜢᥇⏝䛩䜛

•Training– MC䝃䞁䝥䝹䜢⏝䛔䛶䚸⫼ᬒ஦㇟䛸ಙྕ஦㇟䛾ศ㞳䜢᭱㐺໬䛧䛶䛚䛟

54

Fox-Wolfram moment

Control plot (pre-fit 1)•

Hadronic Ht (4j2b, 4j3b, 5j2b, 6j2b)•

Average ΔR between all pairs of b-tagged jets (4j2b, 4j3b, 5j2b, 6j2b)

55

Control plot (pre-fit 2)•

Invariant mass of the two b-tagged jets with minimum ΔR (4j2b, 4j3b, 5j2b, 6j2b)•

Second Fox-Wolfram momentum (4j2b, 4j3b, 5j2b, 6j2b)

Control plot (pre-fit 3)•

Leading jet pt (4j2b, 4j3b, 5j2b, 6j2b)

BDT input variable (prefit signal region)

58

⣔⤫ㄗᕪ
•

⣔⤫ㄗᕪ䛜

59 /41ᐃ䛥䜜䛯ኚᩘ䛻୚䛘䜛ᙳ㡪– 䜲䝧䞁䝖ᩘ– ኚᩘ䛾ศᕸ䛾ᙧ

•100ಶ㏆䛟䛾⣔⤫ㄗᕪ– ᳨ฟჾ⏤᮶䠖䝆䜵䝑䝖䛾䜶䝛䝹䜼䞊䝇䜿䞊䝹䚸䝹䝭䝜䝅䝔䜱䞊䛾 ᐃ䛺䛹– ⌮ㄽ⏤᮶䠖⏕ᡂ᩿㠃✚䚸䝟䞊䝖䞁䝅䝱䝽䞊䝅䝭䝳䝺䞊䝍䞊䛾㐪䛔䛺䛹••⣔⤫ㄗᕪ䛿ಙྕ஦㇟䛻ᑐ䛩䜛ឤᗘ䛻ᙳ㡪䜢୚䛘䜛䛭䜜䛮䜜䛾⣔⤫ㄗᕪ䛾ಙྕᙉᗘμ䛻ᑐ䛩䜛ᙳ㡪䛾๭ྜ– ttbar+jets஦㇟䛻㛵䛩䜛⣔⤫ㄗᕪ䛾๭ྜ䛜୍␒኱䛝䛔᳨ฟჾ⏤᮶䛾⣔⤫ㄗᕪ1• Luminosity measurement– μvis䛾 ᐃ䛻౑䜟䜜䛯䜰䝹䝂䝸䝈䝮䜔σvis䛾 ᐃ䛾㝿䛾≧ἣ䛺䛹䛜ཎᅉ• Beam condition• Aftergrow(ཎᏊ᰾䛾⬺ບ㉳䛛䜙Ⓨ⏕䛧䛯ගᏊ)• Hard radiation䛻䜘䜛᳨ฟჾ䛾ຎ໬ 䛺䛹• Lepton object– Trigger 䜔ID䛻ᑐ䛩䜛efficiency䚸䜶䝛䝹䜼䞊䝇䜿䞊䝹䛾㍑ṇ䜔䛭䛾ศゎ⬟䚸isolation䛺䛹䛻⏤᮶• Jet object– Jet Energy Scale䜔b-jet energy scale 䛾㍑ṇ䚸Jet Energy Resolution䚸JVF cut䚸Jet reconstruction efficiency䛺䛹䛻⏤᮶• Flavour tagging– b-tag efficiency䛾㍑ṇ䛻⏤᮶䚹c-flavour jet䜔light flavour jet䛾mistag䛻䜘䜛ᙳ㡪䜒⪃៖䚹High jet pt㡿ᇦ䜎䛷䛾efficiency䛾እᤄ䛻䜘䜛⣔⤫ㄗᕪ䜒⪃៖
60⌮ㄽ⏤᮶䛾⣔⤫ㄗᕪ•

Ttbar+V– ⏕ᡂ᩿㠃✚䛸modeling(initial state radiation䛾ᐤ୚)䛻㛵䛩䜛ㄗᕪ• ⏕ᡂ᩿㠃✚䛻ᑐ䛧䛶䛿±30 %•Single top– ⏕ᡂ᩿㠃✚䛸NLO level䛻䛚䛡䜛ttbar䛸Wt㐣⛬䛾ᖸ΅䛻㛵䛩䜛ㄗᕪ䚹• ⏕ᡂ᩿㠃✚䛻ᑐ䛧䛶䛿+5/-4 %•••V+jets– ⏕ᡂ᩿㠃✚䛸reweighting 䛻㛵䛩䜛ㄗᕪ• Jet䛾ᩘ䛜୍䛴ቑ䛘䜛䛤䛸䛻24 %䛾ㄗᕪ䛜ຍ䜟䜛䚹䛣䜜䛿LO䛾䝆䜵䝛䝺䞊䝍䞊䛸䝅䝱䝽䞊䜢merge䛩䜛㝿䛻αs䜢ィ⟬䛧┤䛩䛣䛸䛷⏕䛨䜛ㄗᕪ䛷䛒䜛Diboson– ⏕ᡂ᩿㠃✚䛻㛵䛩䜛ㄗᕪ䚹䛣䛣䛷䜒LO generator䜢parton shower䛸merge䛩䜛㝿䛾αs䛾୙☜ᐃᛶ䛻䜘䛳䛶⏕䛨䜛ttH– ⏕ᡂ᩿㠃✚䛻㛵䛩䜛ㄗᕪ䚹+8.9/-12 %•Charged Higgs– ␗䛺䜛Generator䜔PDF䜢⏝䛔䛶䚸signal acceptance䜔modeling䛾㐪䛔䜢ホ౯– PDF䛻㛵䛧䛶䛿PDF4LHC䜢౑⏝䛧䛯䠄ḟ䛾䝨䞊䝆䛷ㄝ᫂䠅䚹Charged Higgs䛾mass㡿ᇦ䛻䛚䛔䛶䚸5䡚10 %䛾ㄗᕪ䛜⏕䛨䛯䚹
61

ttbar⏤᮶䛾⣔⤫ㄗᕪ
•

Cross section: +6.5/-6 %(inclusive)– Ttbar+b-jets, ttbar+c-jets: ±50 %•ttbar sequential Pt reweighting: ྜィ䛷9ಶ
– ISRFSR, Fragmentation, MCgenerator, JER, bJES, jet eta calibration, closebyjet,
JES calibration, b-tag efficiency•

ttbar+b-jet sharp: ྜィ䛷8ಶ (7+1)– Reweighting䠖CSS_KIN(shower recoil model), MSTW, NNPDF,
Q_CMMPS(resummation scale), R_Mbb(Factrisation scale unc), default05(scaleunc), default2(scale unc),– Multiple Parton Interaction and Final State Radiation (by using Madgraph)•

Generator– Madgraph (renormalization scale, paton jet matching model, c-quark mass)•

Parton shower– HERWIG– PDF: PDF4LHC• NLO level䛷䛾PDF䛾set(MSTW, CT10, NNPDF)• αS䛾୙☜ᐃᛶ䜢ホ౯䛩䜛㝿䛻MSTW䛻䛚䛡䜛68 % CL䛻ᑐᛂ䛩䜛ᖜ䜢ᇶ‽
䛸䛧䛶䛔䜛
62

ttbar+b-jets⏤᮶䛾⣔⤫ㄗᕪ• ྑᅗ䠖SHERPA NLO䛾⣔⤫ㄗᕪ䛾ホ౯䛻౑䜟䜜䛯䝟䝷䝯䞊䝍䞊• Renormalization scale (μR):QCD䛾⤖ྜᐃᩘ䛾ィ⟬䛻౑䜟䜜䜛
scale• Resummation scale (μQ):
generator䛸parton shower䜢䛟䛳䛴䛡䜛㝿䛻䚸shower simulator䛜ጞ䜎䜛scale• SHERPA NLO䛷ホ౯䛷䛝䛺䛔⣔⤫ㄗᕪ
䛿MADGRAPH䜢⏝䛔䛶ホ౯
• tbar+jets event with bb arisingfrom Multi Parton Interaction• gluon → bb radiated from top
decay products
63

Fake lepton䛾⣔⤫ㄗᕪ• Fake lepton䛾඲య䛾䜲䝧䞁䝖ᩘ䛻㛵䛧䛶50 %䛾uncertainty– Charged Higgsゎᯒ䛷䛿䛯䛟䛥䜣䛾䝆䜵䝑䝖䜔b-tag䜢せồ䛧䛶䛔䜛䛯䜑䚸䝕䞊䝍ᩘ䛜ᑡ䛺䛟䛺䜚䚸୙☜ᐃᛶ䛜኱䛝䛟䛺䜛• Real efficiency䛸fake efficiency䛻䛴䛟ㄗᕪ䛛䜙䛾ᙳ㡪– Efficiency䜢ぢ✚䜒䜛㝿䛻౑䛳䛯MC䝃䞁䝥䝹䛾ศᕸ䛾ኚ໬– validation䛾㝿䛻౑䛳䛯signal region䛻䛚䛡䜛⫼ᬒ஦㇟䛾㐪䛔– Efficiency䛾ኚᩘ౫Ꮡᛶ

• 䜎䛳䛯䛟㐪䛖䜹䝑䝖䜢䛛䛡䜛䛣䛸䛷௦䜟䜚䛸䛺䜛䜘䛖䛺䝁䞁䝖䝻䞊䝹㡿ᇦ䜢స䜚䚸䛭䜜䜢౑䛳䛶fake efficiency䜢ぢ✚䜒䜛– Muon channel䛻㛵䛧䛶 MTW < 20 GeV 䜔 MTW+MET < 60 GeV 䛾䜹䝑䝖䜢䛛䛡䜛➼• ௦䜟䜚䛸䛺䜛᪉ἲ䜢⏝䛔䛶䚸signal region䛛䜙real efficiency䜢
ぢ✚䜒䜛– MTW > 100 GeV䛺䛹䜢せồ䛧䛶䚸ttbar 䛾dileptonᔂቯ஦㇟䜢౑䛖
64ಙྕ㐣⛬䛾⣔⤫ㄗᕪ
•
•
•

65

Scale variation: renormalisation䛸factorisation䛾䝇䜿䞊䝹䛾ኚ໬
Generator variation䠖 POWHEG䛸MADGRAPH5 AMCatNLO䛾ẚ㍑
PDF uncertainty䠖 NLO䛾PDF䝕䞊䝍䝉䝑䝖㛫䛷䛾ẚ㍑– MSTW2008 68% CL NLO, CT10 NLO, NNPDF2.3 NLO••ᕥᅗ䠖 ྛ㉁㔞Ⅼ䛤䛸䛾scale variation䛻䜘䜛ಙྕ஦㇟䛾䜲䝧䞁䝖ᩘ䛾ኚ໬䚹䛣䛣䛷䛿䝇䜿䞊䝹䜢2ಸ䛻䛧䛯᫬䛾್䜢♧䛧䛶䛔䜛䚹ྑᅗ䠖 ྛ㉁㔞Ⅼ䛤䛸䛾PDF uncertainty䛻䜘䜛ಙྕ஦㇟䛾䜲䝧䞁䝖ᩘ䛾ኚ໬䚹

• 4FS䛸5FS䛾㐪䛔䠖 ᐇ㝿䛻䛿኱䛝䛺⣔⤫ㄗᕪ䛜௜䛟䛜䚸⌮ㄽ䜾䝹䞊䝥䛸䛾㆟
ㄽ䜔CMSᐇ㦂䛾⤖ᯝ䛻䛭䛾⣔⤫ㄗᕪ䛜ධ䛳䛶䛔䛺䛔䛺䛹䜢⪃៖䛧䛶䚸Run 1䛾⤖ᯝ䛷䛿䛴䛡䛶䛔䛺䛔ಙྕ஦㇟䛛䜙䛾ᐤ୚䛾ぢ✚䜒䜚
•

66 /41䛒䜛ಙྕᙉᗘμ䜢௬ᐃ䛧䛯ሙྜ䛾ᑬᗘ㛵ᩘ䛾ศᕸ䛸䚸䝕䞊䝍䛛䜙ぢ✚䜒䛳䛯μ䛻ᇶ䛵䛔䛯ᑬᗘ㛵ᩘ䛾㐪䛔䛛䜙ᐤ୚䜢ぢ✚䜒䜛L(μ,θ)䠖䛒䜛μ䜢௬ᐃ䛧䛯᫬䛻L䛜᭱኱䛸䛺䜛䜘䛖䛻θ䜢タᐃ
L(μ,θ)䠖඲యⓗ䛻᭱኱䛸䛺䜛䜘䛖䛺 L䚹μ䛸θ䛿䛭䛾ᴟⅬ䛷䛾್
䠆1 ≥ λ(μ) ≥ 0• ᑬᗘ㛵ᩘ䛾グ㏙䠖 䝁䞁䝖䝻䞊䝹㡿ᇦ䛸䝅䜾䝘䝹㡿ᇦ䛻䛚䛡䜛䝡䞁䛤䛸䛾ኚᩘ䛾☜⋡ศᕸ䚸ྛ⣔⤫ㄗᕪ䛾☜⋡ศᕸ䛾᥃䛡ྜ䜟䛫

k: control regions䝁䞁䝖䝻䞊䝹㡿ᇦ䛷䛾ኚᩘ䛾ศᕸ䝅䜾䝘䝹㡿ᇦ䛷䛾ኚᩘ䛾ศᕸ⣔⤫ㄗᕪ䛾☜⋡ศᕸ• 䝁䞁䝖䝻䞊䝹㡿ᇦ䛷䛿Hadronic Ht䚸䝅䜾䝘䝹㡿ᇦ䛷䛿BDT䛾ฟຊ 䛻ᑐ䛧䛶ྠ᫬䛻䝣䜱䝑䝔䜱䞁䜾䜢⾜䛖p-value••᝿ᐃ䛧䛯௬ㄝ䛻䜘䛳䛶ㄝ᫂䛷䛝䜛ศᕸ䛛䜙䚸䛹䜜䛰䛡䝕䞊䝍䛜㞳䜜䛶䛔䜛䛛䜢♧䛩㔞䛒䜛௬ㄝ䛾್μ䜢᝿ᐃ䛧䛯᫬䛾test statistics value tμ䜢௨ୗ䛾䜘䛖䛻ᐃ⩏䛩䜛•••᝿ᐃ䛧䛯μ䛸䝕䞊䝍䛾ศᕸ䛜㏆䛔䠙tμ → 0᝿ᐃ䛧䛯μ䛸䝕䞊䝍䛾ศᕸ䛜㐲䛔䠙tμ → ∞p-value䛿 ᐃ䛥䜜䛯䝕䞊䝍䛛䜙ぢ✚䜒䛳䛯tμobs䛸᝿ᐃ䛧䛯௬ㄝ䛜ㄝ᫂䛩䜛tμ䛾ศᕸ䛾䝈䝺䜢ホ౯䛧䛯್•p-value䛿CL䛻ᑐᛂ䛧䛯್䛷䛒䜛α䛸ẚ㍑䛥䜜䜛䛣䛸䛜ከ䛔• α䠙䠄100-CL䠅/100• pμ<α 䛺䜙䜀䛭䛾μ䛿Რ༷
67⣔⤫ㄗᕪ䛻ᑐ䛩䜛䝣䜱䝑䝔䜱䞁䜾䛾ᙳ㡪
••

68 /41䝣䜱䝑䝔䜱䞁䜾䛾๓ᚋ䛷⣔⤫ㄗᕪ䛾ศᕸ䛜ኚ䜟䜛ᕥᅗ䛿mH+=300 GeV䚸ྑᅗ䛿mH+=500 GeV䜢௬ᐃ– 㟷䛔Წ䜾䝷䝣䠖 ྛ⣔⤫ㄗᕪ䛜 ᐃ䛥䜜䛯μ䛻୚䛘䜛ኚື䛾኱䛝䛥– 㯮Ⅼ䠖 䝣䜱䝑䝔䜱䞁䜾๓ᚋ䛾ศᕸ䛾ᖹᆒ್䛾ኚື䛾኱䛝䛥䜢Δθ䛷ホ౯䛧䛯ศᕸ• θ0 =pre-fit᫬䛾ᖹᆒ್䚸 =post-fit᫬䛾ᖹᆒ್• Pre-fit䛷䛾⣔⤫ㄗᕪ䛾ᶆ‽೫ᕪ䠄Δθ䠅䛜チ䛩⠊ᅖ䛷ື䛟• ㄗᕪᲬ䛿post-fit᫬䛾ᶆ‽೫ᕪ䛾኱䛝䛥䜢♧䛩

•±1.5௨ୖື䛟Ⅼ䛿ぢ䛴䛛䜙䛪ಙྕᙉᗘ䛸䛾┦㛵ᅗ

69

Post-fit plot (Control region, Hadronic Ht)

70

Post-fit plot (Control region, BDT output, mH+=300 GeV)71

Post-fit plot (Signal region, Hadronic Ht)

72

Local p-value73

CLs method• ⫼ᬒ஦㇟䛾ᦂ䜙䛞䛜അ↛኱䛝䛟ୗྥ䛝䛻ື䛔䛶䛧䜎䛖ሙྜ– ಙྕ஦㇟䠇⫼ᬒ஦㇟䠄ୗྥ䛝䛾ᦂ䜙䛞䠅 < ⫼ᬒ஦㇟䠄ᖹᆒ್䠅 䛸䛺䜚䚸ཝ䛧䛩䛞䜛ୖ㝈್䜢ぢ✚䜒䛳䛶䛧䜎䛖ྍ⬟ᛶ䛜䛒䜛• CLs method䠖 p-value䜢ṇつ໬䛧䛶ホ౯䛩䜛– CLs = ps+b / (1 - pb)

䠆q䛿Ls+b䛸Lb䛾ẚ䛛䜙ィ⟬䛥䜜䜛

74

75

ATLASᐇ㦂䛷䛾Ⲵ㟁䝠䝑䜾䝇⢏Ꮚ᥈⣴• H+→τνᔂቯ䝏䝱䞁䝛䝹䛸H+→tbᔂቯ䝏䝱䞁䝛䝹䛜䛒䜛• 㔜䛔Ⲵ㟁䝠䝑䜾䝇⢏Ꮚ䛾ሙྜ䚸H+→tbᔂቯ䝏䝱䞁䝛䝹䛾᪉䛜᭷฼– Ⲵ㟁䝠䝑䜾䝇⢏Ꮚ䛾㉁㔞䛜180 GeV ௨ୗ䠖 τνᔂቯ䝏䝱䞁䝛䝹䛜ඃໃ– Ⲵ㟁䝠䝑䜾䝇⢏Ꮚ䛾㉁㔞䛜180 GeV ௨ୖ䠖 tbᔂቯ䝏䝱䞁䝛䝹䛜ඃໃATLAS䛸CMSᐇ㦂䛷䛾Ⲵ㟁䝠䝑䜾䝇⢏Ꮚ᥈⣴
䠄tbᔂቯ䝏䝱䞁䝛䝹䚸Run 1 result䠅• ATLASᐇ㦂– Single lepton䝏䝱䞁䝛䝹䛾䜏– ୺䛺⫼ᬒ஦㇟䛷䛒䜛ttbar+jets㐣⛬䜢୕䛴䛾䜹䝔䝂䝸䞊䛻ศ䛡䛶䛔䜛• ttbar+b-jets, ttbar+c-jets, ttbar+light-flavour-jets– ᐇ㦂䝕䞊䝍䜢౑䛳䛯reweighting䜢⾜䛳䛯䜚䚸⣔⤫ㄗᕪ䜢䜘䜚⣽䛛䛟ホ౯䛧䛯䜚䚸」㞧䛺䛣䛸䜢䜔䛳䛶䛔䜛• CMSᐇ㦂– Single lepton䝏䝱䞁䝛䝹䚸di-lepton䠄τ䝺䝥䝖䞁䛿㝖䛟䠅䝏䝱䞁䝛䝹䛸μτhad䝏䝱䞁䝛䝹䛾୕䛴
• μτhad䝏䝱䞁䝛䝹䛷䛿஧䛴䛾top-quark䛜䝺䝥䝖䝙䝑䜽䛻ᔂቯ䛧䚸∦᪉䛜W→μν䚸䜒䛖∦᪉䛜W→τhadν䛻ᔂቯ䛩䜛– ttbar+jets㐣⛬䜢ศ䛡䛯䜚䚸ᐇ㦂䝕䞊䝍䜢⏝䛔䛯reweighting䛺䛹䛿⾜䛳䛶䛔䛺䛔
76

CMS result

77

ATLASᐇ㦂䛸CMSᐇ㦂䛾ẚ㍑• Expected Limit䛾ẚ㍑• Observed Limit䛾ẚ㍑䠄200 GeV䛸600 GeV䠅– ATLASᐇ㦂• mH+=200 GeV䛻䛚䛔䛶6.28 pb䚸mH+=600 GeV䛻䛚䛔䛶0.24 pb– CMSᐇ㦂• mH+=200 GeV䛻䛚䛔䛶2.2 pb䚸mH+=600 GeV䛻䛚䛔䛶0.15 pb

78

⿵㊊

79

᪂䛧䛔䝧䞁䝏䝬䞊䜽䝅䝘䝸䜸䠄䠍䠅80᪂䛧䛔䝧䞁䝏䝬䞊䜽䝅䝘䝸䜸䠄2䠅

81