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CERN Summer Student Programme 2016 C C2 ¢v Y ? { w ^ |c í ¤ w « £ U { | { U Z + T h á q ù d \...

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1 ˙ ஊ CERN Summer Student Programme 2016 ՃใژڀݚՊ தଜ [email protected] 2016 12 1 1 Ίʹ 2015 6 27 Β 9 2 ·Ͱͷ 10 िɼ Summer Student ͱ CERN ʹɻSummer Student Programme ͰɼຊΛΊք 60 ϲ ΒɼཧɼίϯϐϡʔλαΠΤϯεΛઐ߈Δ 280 ͷ෦ੜɾେӃੜ·ΓɼߨʹڞΛडɼ ڀݚΛߦɻڀݚΕΕଐΕڀݚͷ Supervisor ͷಋͷͱͰߦΘΕɼ LHCb ϓϩδΣ ΫτʹܞΘΔͱʹͳɻ 2 ׆ಈ༰ 2.1 ߨ 6 27 Β 8 5 ·Ͱͷ 6 िʹΓɼେߨಊʹ ߨߦΘΕɻ ߨࢠݪʹΔݧΒཧͷɼ· ɼՃثΛ༻ҩͷԠ༻ʹΔ·Ͱɼ෯ߦΘ ΕɻߨதʹԿ Super-Kamiokande J-PARC ͳͲͷຊͷݧஔɼຊਓΛΉଟͷ ݚڀͷͷઌʹࡏݱΔͷͱͱɼڳ ͳɻ ߨӳޠͰߦΘΕΔΊɼॳΊͷӳ ޠฉऔΕʹΜɼୈʹฉऔΕΔΑʹͳ * 1 ɻ 2.2 ݟ ݟɼSummer Student શମΛରʹͷ ͱɼΕΕͷੜܞΘΔϓϩδΣΫτάϧʔ ϓͰͷΈߦΘΕΔখنͷͷɻSummer Student શମΛରʹݟձ 2 ߦΘΕɼՃ ث Data Center ͳͲΛݟɻATLAS LHCb ͷ ݟʹͷݕثΛݟΒΕΔͷͱظɼ LHC ӡసதΊɼ೦ͳΒԼʹΓΔͱ Ͱͳɻ * 1 ɼߨதͷδϣʔΫ·ޙ࠷ͰΑΘΒͳɻ 2.3 ڀݚ2.3.1 LHCb Ͱɼ༏ӉΛઆΔΊʹɼ CP ରশ ͷΕΛਫ਼ʹଌఆΔΊͷڀݚߦͳΘΕΔɻ CP ରশͷΕΛਫ਼ʹଌఆΔʹɼਖ਼ͳʢParticle Identification: PIDʣඞཁͱͳΔɻຊڀݚͰ ɼPID ͷਫ਼ΛදͷৼΔʹɼσʔλ ͱϞϯςΧϧϩγϛϡϨʔγϣϯʢMCʣͱͷൺΛ ͳɻ 2.3.2 ղੳσʔλʹ ڀݚͰɼD ͷյϞʔυʹɼյʹ ΑੜΔ K ͱ π ʹࢠղੳΛߦ ɻD 0 ͱյ D ɼΒʹ K ͱ π ͱյΔɻ D D 0 π (1) D 0 K π (2) LHCb ʹ RICH ʢRing-imaging Cherenkovʣͱݺ ΕΔݕثઃஔΕΔʢਤ 1ʣɻRICH ͰɼΤΞ ϩήϧதΛ௨աՙνΣϨϯίϑͷ ଌఆΕΔɻνΣϨϯίϑͷΒ β = v/c 1: LHCb ݕثͷ؍ɻRICH RICH1 ͱ RICH2 ͷೋ ஔΕΔɻRICH ͷ΄ʹɼඈݕثʢTT, T1ʙT3ʣ , Scintillating Pad Detector: SPD ʢΧϩϦʔ ϝʔλʔͷͷೖΛݕग़ʣɼΧϩϦʔϝʔλʔͳͲ ΒߏΕΔɻ 191
Transcript
  • 6

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    “ ”

    (

    )

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    ( )

    [1] ATLAS Collaboration, ATLAS-CONF-2015-081.

    [2] CMS Collaboration, CMS-PAS-EXO-15-004.

    [3] , , 34 4

    2016 .

    [4] http://inspirehep.net/search?ln=

    ja&p=refersto%3Arecid%3A1410174&sf=

    earliestdate.

    [5] S. Heinemeyer et al. [LHC Higgs Cross Section

    Working Group Collaboration], arXiv:1307.1347

    [hep-ph].

    [6] ATLAS Collaboration, ATLAS-CONF-2015-075.

    [7] ATLAS Collaboration, ATLAS-CONF-2015-071.

    [8] G. Aad et al. [ATLAS Collaboration], JHEP

    1601, 032 (2016).

    [9] G. Aad et al. [ATLAS Collaboration], Eur. Phys.

    J. C 76, no. 1, 45 (2016).

    [10] R. Franceschini et al., JHEP 1603, 144 (2016).

    [11] G. Aad et al. [ATLAS Collaboration], Phys. Lett.

    B 738, 428 (2014)

    [12] CMS Collaboration, CMS-PAS-EXO-16-018.

    [13] D. Buttazzo, A. Greljo and D. Marzocca, Eur.

    Phys. J. C 76, no. 3, 116 (2016).

    [14] ATLAS Collaboration, ATLAS-CONF-2016-018.

    [15] S. D. McDermott, P. Meade and H. Ramani,

    Phys. Lett. B 755, 353 (2016).

    [16] D. Barducci, A. Goudelis, S. Kulkarni and

    D. Sengupta, JHEP 1605, 154 (2016).

    [17] W. Chao, Nucl. Phys. B 911, 231 (2016).

    [18] P. Agrawal, J. Fan, B. Heidenreich, M. Reece and

    M. Strassler, JHEP 1606, 082 (2016).

    [19] W. S. Cho, D. Kim, K. Kong, S. H. Lim,

    K. T. Matchev, J. C. Park and M. Park, Phys.

    Rev. Lett. 116, no. 15, 151805 (2016).

    [20] J. E. Kim, Phys. Lett. B 755, 190 (2016).

    [21] J. H. Collins, C. Csaki, J. A. Dror and S. Lom-

    bardo, Phys. Rev. D 93, no. 11, 115001 (2016).

    [22] U. Ellwanger and C. Hugonie, JHEP 1605, 114

    (2016).

    [23] L. A. Harland-Lang, V. A. Khoze and

    M. G. Ryskin, JHEP 1603, 182 (2016).

    [24] S. Kanemura, K. Nishiwaki, H. Okada,

    Y. Orikasa, S. C. Park and R. Watanabe,

    Accepted to PTEP, arXiv:1512.09048 [hep-ph].

    [25] F. Richard, arXiv:1604.01640 [hep-ex].

    [26] A. Strumia, arXiv:1605.09401 [hep-ph].

    [27] K. Fujii et al. [LCC Physics Working Group Col-

    laboration], arXiv:1607.03829 [hep-ph].

    [28] http://astrumia.home.cern.ch/astrumia/

    InstantPaper.html.

    [29] http://cp3.irmp.ucl.ac.be/~mbackovic/.

    [30] M. Backović, arXiv:1603.01204 [physics.soc-ph].

    [31] http://resonaances.blogspot.kr/2016/06/

    game-of-thrones-750-gev-edition.html.

    [32] ATLAS Collaboration, ATLAS-CONF-2016-059.

    [33] CMS Collaboration, CMS-PAS-EXO-16-027.

    1

    CERN Summer Student Programme 2016

    [email protected]

    2016 12 1

    1

    2015 6 27 9 2 10

    Summer Student CERN Summer

    Student Programme 60

    280

    Supervisor LHCb

    2

    2.1

    6 27 8 5 6

    Super-Kamiokande J-PARC

    *1

    2.2

    Summer Student

    Summer

    Student 2

    Data Center ATLAS LHCb

    LHC

    *1

    2.3

    2.3.1

    LHCb CP

    CP

    Particle Identification: PID

    PID

    MC

    2.3.2

    D∗

    K π

    D0 D∗ K

    π

    D∗ → D0 π (1)D0 → K π (2)

    LHCb RICH Ring-imaging Cherenkov

    1 RICH

    β = v/c

    1: LHCb RICH RICH1 RICH2

    RICH TT,

    T1 T3 , Scintillating Pad Detector: SPD

    191

  • 2

    v c

    PID

    DLL The Difference of

    Log-Likelihood D∗

    K π DLL

    K π

    K

    PID Performance MC

    2.3.3 PID Performance

    MC 1

    1:

    D∗ 1, 990 < Mass < 2, 030 (MeV/c2)

    1, 600 < PT < 30, 000 (MeV/c)

    1, 600 < P < 400, 000 (MeV/c)

    D0 1, 850 < P < 400, 000 (MeV/c)

    D∗ −D0 144 < Mass difference < 147 (MeV/c2)K 160 < PT 1, 600 < P (MeV/c)

    −100 < DLL K < 100π 160 < PT 1, 600 < P (MeV/c)

    −100 < DLL K < 100

    PID Performance 2

    MC

    MC

    2015

    9 MC 2015 8

    MC PID Performance

    MC

    MC

    3

    CERN

    3

    Kaon ID Efficiency / % 75 80 85 90 95 100

    Pio

    n M

    isID

    Effi

    cien

    cy /

    %

    1

    10

    2: K

    π K

    MC

    *2

    *3

    *4

    *2

    *3

    *4

    192

  • 2

    v c

    PID

    DLL The Difference of

    Log-Likelihood D∗

    K π DLL

    K π

    K

    PID Performance MC

    2.3.3 PID Performance

    MC 1

    1:

    D∗ 1, 990 < Mass < 2, 030 (MeV/c2)

    1, 600 < PT < 30, 000 (MeV/c)

    1, 600 < P < 400, 000 (MeV/c)

    D0 1, 850 < P < 400, 000 (MeV/c)

    D∗ −D0 144 < Mass difference < 147 (MeV/c2)K 160 < PT 1, 600 < P (MeV/c)

    −100 < DLL K < 100π 160 < PT 1, 600 < P (MeV/c)

    −100 < DLL K < 100

    PID Performance 2

    MC

    MC

    2015

    9 MC 2015 8

    MC PID Performance

    MC

    MC

    3

    CERN

    3

    Kaon ID Efficiency / % 75 80 85 90 95 100

    Pio

    n M

    isID

    Effi

    cien

    cy /

    %

    1

    10

    2: K

    π K

    MC

    *2

    *3

    *4

    *2

    *3

    *4

    3

    CERN Hamid

    Hamid

    Hamid

    Summer Student Programme

    Summer Student

    2

    3: Hamid

    4

    M1

    Hamid

    *5

    5

    Summer Students

    Summer Stu-

    dents

    Summer Students

    6

    Summer Student Programme

    CERN

    Supervisor Sajan Easo

    Summer Student Programme

    CERN 2

    Summer Student

    *5

    20

    193


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