tutorial19 monnai verfin

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Transcript of tutorial19 monnai verfin

Page 1: tutorial19 monnai verfin

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4 / 25($�' (KEK),��� �����, *�, +�, 2019&8�19%

���(heavy ion)

n ��"���� ��197Au, gold�, ��208Pb, lead���

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NpartNcoll

n Npart (number of par=cipants):*���!+/n Ncoll (number of collisions): !+-!+.3�/

?:

Ncoll "1> ����������#,��:%�8<

Npart = 6

Ncoll = 3

Npart = 6

Ncoll = 9

(Nspec 12����90�8<)

�����:% (Glauber model)�)��

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8 / 25���� (KEK),���������, ��, ��, 2019�8�19�

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7)�����n �������(centrality)

central peripheral

/�����6���;*+<�0�7��.��0-5 %, 5-10%, … , 95-100% �'�

0% 100%

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b: impact parameter (1-"$:)

ALICE collaboration, PRL 106 (2011) 032301

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�� "6)1���Optical Glauber model

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12 / 25TG9N (KEK),�!��#�$3-), X3, Z5, 2019J8119I

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2. *8�PO�,���KB

3. "&���.Y�H48*�V'*8-*8:F����LD��[LD;2*8-*8:F�M@=7WAR>:

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M. L. Miller et al., Ann. Rev. Nucl. Part. Sci. 57, 205 (2007)

3. ()�) b, Ncoll, Npart��#$7�

MC = Monte Carlo

+'��9K. Reygers, https://www.phenix.bnl.gov/phenix/WWW/p/draft/reygers/glauber

Au-Au 200 GeV�&"

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14 / 25F=3A (KEK),������ .)$, J., L/, 2019?8,19>

�"�� !�����E+n 69D0*&:@8�G��E+

4. %1-%14<#8��� ��/�"�!���G���CB�;� Fig: B. Schenke et al.,

PRL 108, 252301 (2012)

K7E+�'H���� 2(5-�I�� �

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t

z

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);,! (proper time):

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Centralitycentral0-5 %

peripheral80-90 %

, �� ������ =#���<+ )(%���?�����

ALICE Collaboration, PLB 772 (2017) 567

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dNch/dη�Npart$>;n ���� �/��9H�B���

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BRHAMS, PLB 677, 267 (2009)

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