LANL Medium Energy Nuclear Physics Cold Nuclear Matter and Spin Physics Overview May 24, 2010

LANL Medium Energy Nuclear PhysicsCold Nuclear Matter and Spin Physics Overview

May 24, 2010

Overview – Mike Leitch• Physics – Cold Nuclear Matter, Spin• Hardware – Muon Tracker, FVTX• People, Highlights, Budget, Future

Cold Nuclear Matter – Pat McGaughey

RHIC Spin – Xiaodong Jiang

1

Mike Leitch -- 5/24/10

2Cold Nuclear Matter (CNM) PhysicsNSAC Milestone: DM8 – “Determine gluon densities at low x in cold nuclei via p + Au or d + Au collisions.“

• Leading twist gluon shadowing• Coherence models & higher-twist (HT) shadowing• Small-x gluon saturation: 2 1 diagrams become important and deplete the low-x region; amplified in a nucleus.

R GPb Q2 = 1.69 GeV2

EPS08EPS09

nDS

EKS98HKN07

xNSAC Milestone: DM12 – “…constrain the mechanism for parton energy loss in the quark-gluon plasma.” And what about energy loss in cold nuclear matter?

R(A/p)R=1 xF

With energy loss

E866/NuSea, 800 GeV, J/Ψ p+W / p+Be ratio

R(W

/Be)

xF

shadowing only


3

PHENIX Preliminary

J/ suppression in CNM for RHIC d+Au compared to lower energy experiments(Colorado, Leitch, Pereira)

New J/ suppression from 2008 d+Au data(Colorado, Leitch, Pereira)

Upsilon suppression in 2008 d+Au data(K. Lee (Korea U.), Leitch, …)

Recent CNM results from d+Au collisions

, and suppression for forward-rapidity(Lei Guo, …)


4Quark Energy Loss in Nuclei - FNAL E906 (120 GeV)

Energy loss upper limits based on E866 Drell-Yan

measurement & EKS shadowing

In E866 at 800 GeV, the nuclear dependence of Drell-Yan on nuclear targets could not unambiguously separate shadowing and dE/dx effects at low x• for 120 GeV, x > 0.1 & only quark dE/dx remains

LANL LDRD, Ming Liu, I. Vitev, 2008-2010• Detector & physics simulations; dE/dx theory• Muon detectors from applied program, shipped to FNAL & being tested• E866 software expertise• E906 Collaboration & software meeting @Los Alamos, 1/7/09• Ming Liu, Pat McGaughey, Mike Leitch, Han Liu, and othersE906 Schedule : Runs in 2011, 2012

/dE dx

q, g

q

q


5Spin Physics – Forward W’s & Drell-Yan

Present Muon tracker resolution good enough so far for J/, but only ~300 m• Need (design) 100 m to separate W+ from W- at high momentum!• LANL studying low-level cluster resolution, alignment, pileup/crosstalk, etc to reach the design resolution

NSAC Milestone: HP8 – “Measure flavor-identified q and qbar contributions to the spin of the proton via the longitudinal-spin asymmetry.”

PHENIX Muon Arms

NSAC Milestone: HP13 – “Test unique QCD predictions for relations between single-spin phenomena in p-p scattering and those observed in deep-inelastic lepton scattering”

70% polariz.

Correlation between parton pT inside proton and the proton spin• Opposite sign expected for Drell-Yan compared to DIS - attractive vs repulsive color charge force

s = 200 GeVP = 70%

“Transverse-Spin Drell-Yan Physics at RHIC” (http://spin.riken.bnl.gov/rsc/write-up/dy_final.pdf)Les Bland, Stanley J. Brodsky, Gerry Bunce, Ming Liu, Matthias Grosse-Perdekamp, Akio Ogawa, Werner Vogelsang, Feng Yuan


6Transverse Spin Asymmetries

Preliminary measurement for 2006 single muons• asymmetries driven by correlations between proton spin and gluon transverse momentum• excludes maximum gluon Sivers from Anselmino PRD 70, 074205 (2004)• precision measurement with FVTX in the future

Recent COMPASS results for Sivers Asymmetry are different from naïve expectation based on earlier HERMES measurements• Why? – different kinematics, experimental and/or theoretical uncertainties?Jlab E06-010 Transverse neutron Single Spin Asymm. (SSA)• Independent measurement, Jiang & Puckett


LANL Contributed PHENIX Muon TrackersMuon Tracker Contributions - Designed, built, commissioned Muon Trackers

Current Responsibilities - DC Member, provide many on-call expert shifts per run, lead and perform maintenance each year, work with Muon Trigger upgrade group

Muon Tracker Analyses - Provided much of the simulation & reconstruction software, online QA software for the Muon Trackers. Lead roles in most muon physics analyses (sustained staff, post-doc effort required for maintenance of detectors)

7


prompt

Silicon Trackers Enhance RHIC Physics ProgramFVTX (Forward VerTeX detector) - significantly enhancing the Muon Physics

program with precision trackingPhysics Measurements - precision open heavy flavor measurements, flavor-

separation, significantly improved vector meson program, Drell-Yan, improved W background rejection

LDRD funds - signficantly advanced R&D & theoryLANL Role - Project Leaders, DAQ, sensor and readout chip, softwareCost $4.9M, Completion 2011 - for Run12

LANL Initiated + Leading FVTX Effort

8

Single-spin asymmetry for heavy-quarks

Improvement J/Ψ, Ψ’ mass resolution & lower background (light meson decays)

J/Ψ

Ψ’


PHENIX Team and MEP Personnel

Technical Staff Members (2.0 FTEs in FY09 supported by MEP): Melynda Brooks, Xiaodong Jiang, Jon Kapustinsky, Gerd Kunde, David Lee,

Mike Leitch, Ming-Xiong Liu, Pat McGaughey, Walt Sondheim, Hubert vanHecke

LDRD-supported Staff and Post-Docs (0.4 FTE Staff, 2.0 FTE Post-Doc):Ming Liu (25%), Pat McGaughey (15%), Christine Aidala (100%), Andrew

Puckett (100%)

Post-Docs (1 FTE on KB01 in FY09) : Carlos Camacho, Lei Guo, Han Liu, Anuj Purwar, Catherine Silvestre,

Zhengyun You

Students and Full-Time Visitors: Hisham Albataineh (NMSU, recently graduated), Husseing Al’Taani (NMSU, now

at BNL) Hugo Pereira (staff, Saclay), Xiaorong Wang (NMSU staff)

2.0 FTE Staff + 1.0 FTE PD on DOE funds0.4 FTE Staff + 2.0 FTE Post-Docs on LDRD funds

*Bold-face indicates primary contributors to MEP work

9


Program Evolution: May 2006 - Present

Staffing changes:• TSM Xiaodong Jiang hired• Significant increase in post-doc levels through LDRD funded

fellowships

Program evolution• Better performance from RHIC in luminosity, polarization.

Analyses moving to publication.• FVTX detector evolved to DOE-funded project. Underwent

scientific and technical review by DOE, accompanied by many more simulations of performance.

• Secured LDRD funding to provide muon identification detectors, and perform energy loss measurement using FNAL E906

• Transitory effort at JLAB (Xiaodong and LDRD-funded post-doc)

10


DOE Supported EffortsMedium Energy Physics - RHIC Spin and Cold Nuclear Matter, E906, JLAB

$1035k/FY09FVTX (Project Management, Mechanical, DAQ, Readout Chip and Sensor Oversight)

VTX (construction funds for Walt Sondheim)PHENIX Muon Tracker - continued maintenance, expert shifts, etc.

Heavy Ion Physics - RHIC HI and Cold Nuclear Matter $2498k/FY09

LDRD-Supported EffortsThe First Precise Determination of Quark Energy Loss in Nuclei (FNAL E906) (2008-2010)

$250k/yearChristine Aidala, Frederick Reines Post-Doc, “Measurement of Transverse Single-Spin

Asymmetries of Neutral Pion and Eta Meson Production in Polarized p+p Collisions Using the PHENIX Detector at RHIC” (2009-2011) $180k/year

Andrew Puckett, Director’s funded Post-Doc, Experimental Studies On the Origin of Nucleon Spin) (2010-2011) $125k/year

Funds Supporting PHENIX Team Efforts11


12

Key Roles• PHENIX Physics Working Group Conveners (past) – Leitch, Aidala, Brooks• PHENIX Paper Writing – many PPG’s & IRC’s• PHENIX Executive Council - Leitch• PHENIX Speakers Bureau – Leitch, Aidala• PHENIX 2010 Decadal Plan Writing committee – Leitch, Aidala

• PHENIX Deputy Director for Upgrades - Leitch• PHENIX Detector Council Member for Muon Tracker – Leitch (present), Brooks, McGaughey (past)• PHENIX Run Coordinator for 2007 & 2008 – Leitch• PHENIX Period Coordinators – Liu, Leitch• FVTX Project Leaders – Brooks, Kapustinsky• FVTX & VTX Lead Mechanical Engineer – Sondheim • Co-convener of RHIC-II pA/Forward Physics – Leitch• FNAL E866/NuSea Spokesman – Leitch, McGaughey (past), Garvey (past)• Organizers for 2010 Santa Fe DNP meeting – Brooks, Leitch, Vitev• APS Hadron Phys. Topical Group Exec. Council – Leitch (past)Mike Leitch -- 5/24/10

13Some Recent Highlights• 2008 d+Au J/Ψ RCP for QM09 - Leitch + Colorado• , , RCP in d+Au at forward rapidity – Guo• Working on and C – K. Lee (Korea U.), Leitch• ALL and AN for forward heavy-quarks and for J/ - M. Liu, H. Liu• Forward rapidity η AN using forward calorimeter (MPC) – Aidala• E06-10/-011 (neutron AN) co-spokesman, leading analysis – Jiang, Puckett

• Hawaii DNP mtg d+Au talk; two d+Au J/Ψ talks at ECT & Seattle/INT; Lead PHENIX talk at QM09 - Leitch• Rutgers LRP mtg d+Au talk - Leitch• RHIC/AGS ‘07, ‘08 & PKU-RBRC ‘08Transverse Spin talks – H. Liu• WWND 10 Transverse Spin; PKU-RBRC ‘08 Drell-Yan talks – M. Liu• EINN 09, HANUC ‘09 Lectures, SPIN ‘08, … invited talks – Aidala• EIC talk at WWND ‘08, - Aidala• Transversity ‘08 – Jiang

• RHIC Spin Drell-Yan white paper – M. Liu coauthor• E906 muID tubes, 1st detectors on floor at FNAL – M. Liu, H. Liu, McGaughey• CNI Polarimeter results for 2006 run – H. Liu, Camacho• E906 Collaboration mtg in Los Alamos – M. Liu & others• SpinFest organizer – M. Liu


14Extending Gluon Saturation, Energy Loss and

Nculeon Structure Studies to an Electron-Ion Collider

e-p(A) collisions at high energy and luminosity using collider• clean well-understood EM-probe• next large-scale facility in U.S. Nucl. Phys.

LANL group:• Explore EIC physics opportunities

• gluon saturation, parton dE/dx & FF’s• nucleon (spin) structure• electroweak structure of nucleon

• Establish (Nat. Lab.) role in detector development


Outlook: LANL Medium Energy Physics 15

• Continue active leadership of the CNM Program centered on PHENIX• Push E906 through to CNM dE/dx physics result• Lead in the muon detector based forward-rapidity RHIC spin program• Work towards W measurement

• solve high-momentum charge separation problem in muon tracker• Forward-rapidity transverse asymmetry measurements• Harvest new physics enabled by the PHENIX FVTX upgrade• Carry out analysis of present JLAB data; low-level 12-GeV JLab physics?• Explore EIC physics and establish role in detector development

PHENIX Preliminary


2010 2011 2012 2013 2014 2015 2016 2017 2018 2019

CNM from Run8

W AL (sea

contrib. to nucl.

spin)

forw transv.

CNM with FVTX

W, DY transv.

FVTXphysics

E906 dE/dx

JPARCPol. DY?

ANn JLab 12-GeV

JLab?

EIC high in LRP?

LHC p+A?

FVTX construction

LANL detector initiative & physics planning

• E906 strengthened by new Director’s (LDRD) Post Doc and/or student• JLab AN

n enabled by present Dir’s PD & LDRD ER, finishes present analyses• 12-GeV Jlab does not fit; possible LDRD?• Polarized DY (at JParc), LHC p+A are other more virtual, but interesting, possibilities

EIC physics development

A Decadal View for the LANL ME Physics Program 16

rough

milestones

Physics with FVTX for multiple species of collisions


17

Backup


Requested KB01 Support

• FVTX & Muon Tracker hardware work to enable physics included in “RHIC Analysis” (and shared with KB02); E906 also supported in part by KB02• DOE (red); LDRD (blue); staff members (underlined)• $120k PD increase in FY11 + 3.5%/yr inflation

FY10 (TSM + PD)

FY11(TSM + PD)

FY12(TSM + PD)

FY13(TSM + PD)

RHIC Analyses

1.6 + 0.9+ 0.8

1.5 + 1+ 0.8

1.6 + 1+ 0.5

1.6 + 1+ 0.5

E906 0.3 + 0.1 0.4 + 1+ 1

0.3 + 1+ 1

0.2 + 1+ 1

EIC 0.1 + 0.2 0.1 + 0.2 0.1 0.4 + 0.5

0.20.4 + 0.5

JLab 0.3 + 1 0.3? + 1 LDRD? LDRD?

DOE FTE 2 + 0.9 2 + 2 2 + 2 2 + 2

KB01 Funds $1035k $1195k $1237k $1281k

LDRD FTE 0.3 + 2.1 0.3? + 2 0.4 + 1 0.4 + 1

18


FY10Who RHIC

(FTE)JLab(FTE)

LDRD(FTE)

Leitch 0.3 CNM, EIC

McGaughey 0.1 E906

M. Liu 0.4 W0.3 Transv.0.1 DY

0.2 E906

Jiang 0.6 Transv. 0.3 Transv.

H. Liu (PD) 0.9 0.1 E906

Aidala (PD)(2009-2011)

0.4 Transv.0.4 ALL0.2 EIC

Puckett (PD)(2010-2011)

0.7 n-asymm.0.3 12-GeV

New PD

Total 1.7 + 0.9 PD 0.3 0.3 + 1.1+1 PD

DOE Total 2 .0 + 0.9 PD

• FVTX & Muon Tracker hardware work to enable above physics • E906 LDRD ends at end of FY10• PD’s in LDRD column are supported by LDRD

19Fitting Effort into Available FTE’s


FY11 - with JLab LDRD + E906 PDWho RHIC

(FTE)JLab(FTE)

LDRD(FTE)

Leitch 0.3 CNM, EIC

McGaughey 0.1 E906

M. Liu 0.3 W0.3Transv.0.1 DY0.3 E906

Jiang 0.6 Transv. 0.3 JLab

H. Liu (PD) 1.0

Aidala (PD)(2009-2011)

0.4 Transv.0.4 ALL0.2 EIC

Puckett (PD)(2010-2011)

0.7 n-asymm.0.3 12-GeV

New PD 1 PD (E906)

Total 2.00 + 2 PD 0.3 + 1+1 PD

DOE Total 2 .0 + 2 PD

• FVTX & Muon Tracker hardware work to enable above physics • JLab staff effort requires new LDRD support• New PD enables E906 completion through physics• PD’s in LDRD column are supported by LDRD



FY13-FY14 - with ramp-up of EICWho RHIC

(FTE)JLab(FTE)

LDRD(FTE)

Leitch 0.3 CNM, EIC

McGaughey 0.3 EIC

M. Liu 0.1 W0.3Transv.0.2 DY0.2 EIC

0.2 EIC (detector)

Jiang 0.4 Transv0.2 EIC

0.2 EIC (detector)

H. Liu (PD) 1

Postdoc 1 EIC+RHIC

Postdoc 1 E906

Total 2.0 + 2 PD 0.4 + 1 PD

DOE Total 2 .0 + 1 PD

• FVTX & Muon Tracker hardware work to enable above physics • PD’s in LDRD column are supported by LDRD



22Physics Viability of the RHIC Polarized Beam Operations

achieved Projected “2014E” W msmt in 20 wks

s (GeV) Lumipb-1/wk

Polariz Lumipb-1/wk

Polariz Lumipb-1/wk

Polariz

200 8 55% 6-10 55-65%

500 18 34% 18-83 35-65% 45 70%

Polarized p+p Accelerator Improvements:• new polarized source - +10% in polarization• AGS horizontal tune jump - +5% polarization?• * 0.6• 9 Mhz & other RF improvements• spin flipper, electron lens

W physics goal: 300 pb-1 delivered at 70% polariz.• PHENIX recorded/delivered = 1/3• achieved/goal =(18 pb-1 x 20 wks x 1/3 x 0.342)/(300 pb-1 x 0.72) = 1/10• projected/goal =(83 pb-1 x 20 wks x 1/3 x 0.652)/(300 pb-1 x 0.72) = 1.6

deFlorian projections

* Oct 2009 RHIC projections – W. Fischer et al.

800 pb-1


LANL Medium Energy Nuclear Physics Cold Nuclear Matter and Spin Physics Overview May 24, 2010

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Transcript of LANL Medium Energy Nuclear Physics Cold Nuclear Matter and Spin Physics Overview May 24, 2010