1 of 6

Status reports from

Jets & HF group

Rongrong Ma, Shyam Kumar

April 14, 2026

1

2 of 6

Available simulations from March campaign (Apr. 13)?

  • Use events without machine background

2

10x100

10x130

10x250

ep

DIS

Need

Need

D0

Need

Need

Lc

Need

10x100

eAu

DIS

Need

D0

Need

Lc

3 of 6

Early Science Report: impact plots

3

Figure

Physics

Status

Simulation status

Jet ReA vs. x for R = 1.0

nPDF

Code ready

Impact study? Other WGs?

ep, 10x130, DIS

eAu, 10x100, DIS

Lc/D0 ratio vs. pT

Charm fragmentation

Code ready

ep, 10x250, DIS, D0, Lc

D0 ReA vs. z for R = 1.0

Energy loss and hadronization

Need jet clustering

Theory curve ready?

ep, 10x130, DIS, D0

eAu, 10x100, DIS, D0

Not ready

4 of 6

Working group paper: jets

4

Figure

Physics

Status

Hadron-in-jet Collins in ep

Collins asymmetry

TBD

Jet ReA vs. x for R = 1.0

nPDF

Code ready

Impact study?

Jet ReA ratio vs. x for small and large R

Propagation in cold nuclear matter

Code ready

Need updated theory curve

Jet FF ReA

nFF

?? partner with SIDIS to do impact study

Jet EEC in ep and eA

Sub-structure

Initial results; need to develop physics

5 of 6

Working group paper: HF

5

Figure

Physics

Status

Lc/D0 ratio vs. pT

Charm fragmentation

Machinery is rady

D0 ReA vs. z for R = 1.0

Energy loss and hadronization

Need jet clustering

Theory curve ready?

Charm structure function in ep and eA

Gluon nPDF

??

D0 Sivers asymmetry

Gluon Sivers function

??

6 of 6

Early Science Report: impact plots

  • Currently in the main report

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