Material science Opportunities in a NuMI Offaxis Test.


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Material science Opportunities in a NuMI Offaxis Test . Stanley Wojcicki Stanford College September 16, 2002 London, Britain. Diagram. Initial Remarks Points of interest of an Off-hub Pillar Imperative Material science Issues NuMI Abilities. Presentation.
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Slide 1

Material science Opportunities in a NuMI Offaxis Experiment Stanley Wojcicki Stanford University September 16, 2002 London, England

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Stan Wojcicki, Physics at Off-hub Outline Introductory Comments Advantages of an Off-pivot Beam Important Physics Issues NuMI Capabilities

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Stan Wojcicki, Physics at Off-hub Introduction

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Stan Wojcicki, Physics at Off-hub Introductory Comments The present era of long and medium pattern terrestial n wavering investigations is intended to : Confirm SuperK results with quickening agent n ’s (K2K) Demonstrate oscillatory conduct of n m ’s (MINOS) Make exact estimation of swaying parameters (MINOS) 4. Exhibit expressly n m n t detecting so as to sway mode n t ’s (OPERA, ICARUS) 5. Enhance limits on n m  n e subdominant wavering mode, or recognize it (MINOS, ICARUS) Resolve the LSND riddle (MiniBooNE ) Confirm signs of LMA arrangement (KamLAND) Many issues in neutrino material science will then still stay uncertain. Cutting edge tests will attempt to address them.

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Stan Wojcicki, Physics at Off-pivot The Physics Goals Observation of the move n m  n e Measurement of q 13 Determination of mass chain of importance (indication of D m 23 ) Search for CP infringement in neutrino part Measurement of CP infringement parameters Testing CPT with high exactness

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Stan Wojcicki, Physics at Off-hub Offaxis Beam Advantages

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Stan Wojcicki, Physics at Off-hub The Off-hub Situation The material science issues to be explored are plainly depicted The predominant swaying parameters are known sensibly well One needs to expand flux at the craved vitality (close wavering most extreme) One needs to minimize flux at different energies One needs to have restricted vitality range

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Stan Wojcicki, Physics at Off-hub Kinematics of p Decay Compare E n spectra from 10,15, and 20 GeV p ’s Lab vitality given by length of vector from cause to shape Lab edge by point wrt vertical Energy of n is generally free of p vitality Both higher and lower p energies give n ’s of to some degree lower vitality There will be a sharp edge at the high end of the resultant n range Energy fluctuates straightly with edge Main vitality spread is because of shaft uniqueness E n LAB q LAB

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Stan Wojcicki, Physics at Off-hub Kinematics Quantitatively

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Stan Wojcicki, Physics at Off-hub Optimization of off-hub pillar Choose ideal E n (from L and D m 23 2 ) This will focus mean E p and q LAB from the 90 o CM rot condition Tune the optical framework (target position, horns) in order to acknowledge greatest p meson flux around the sought mean E p

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Stan Wojcicki, Physics at Off-hub Off-hub ‘magic’ ( D.Beavis at al. BNL Proposal E-889) NuMI pillar can deliver 1-3 GeV exceptional shafts with all around characterized vitality in a cone around the ostensible bar bearing

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Stan Wojcicki, Physics at Off-hub Medium Energy Beam A. Para, M. Szleper, hep-ex/0110032 Neutrino occasion spectra at putative identifiers situated at diverse transverse areas More flux than low vitality on-hub (more extensive range of pions contributing) Neutrinos from K rots

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Stan Wojcicki, Physics at Off-pivot Experimental Challenge

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Stan Wojcicki, Physics at Off-hub Physics

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Stan Wojcicki, Physics at Off-hub 2 Mass Hierarchy Possibilities

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Stan Wojcicki, Physics at Off-hub n m  n e move mathematical statement P ( n m  n e ) = P 1 + P 2 + P 3 + P 4 A. Cervera et al., Nuclear Physics B 579 (2000) 17 – 55, development to second request in

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Stan Wojcicki, Physics at Off-hub Several Observations First 2 terms are autonomous of the CP abusing parameter d The last term changes sign in the middle of n and n If q 13 is little (≤ 1 o ) the second term (subdominant wavering) rivals first For little q 13 , the CP expressions are corresponding to q 13 ; the first (non-CP term) to q 13 2 The CP disregarding terms develop with diminishing E n ( for a given L) There is an in number connection between\'s distinctive parameters CP infringement is perceptible just if all edges ≠ 0

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Stan Wojcicki, Physics at Off-hub q 13 Issue The estimation of q 13 is made confused by the way that swaying likelihood is influenced by matter impacts and conceivable CP infringement Because of this, there is not a special numerical relationship between swaying likelihood and q 13 Especially for low estimations of q 13 , affectability of a test to seeing n m  n e depends all that much on d Several analyses with diverse conditions and with both n and n will be important to unravel these impacts The center of cutting edge swaying examinations is to watch n m  n e move q 13 should be adequately extensive if one is to have an opportunity to explore CP infringement in n segment

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Stan Wojcicki, Physics at Off-hub Matter Effects The trials taking a gander at n m vanishing measure D m 23 2 Thus they can\'t quantify indication of that amount ie focus mass order The sign can be measured by taking a gander at the rate for n m  n e for both n m and n m . The rates will be diverse by uprightness of distinctive n e - e - CC cooperation in matter, autonomous of whether CP is disregarded or not At L = 750km and swaying most extreme, the impact\'s span is given by A = 2√2 G F n E n/D m 23 2 ~ 0.15

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Stan Wojcicki, Physics at Off-hub Source of Matter Effects

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Stan Wojcicki, Physics at Off-pivot Scaling Laws (CP and Matter) Both matter and CP infringement impacts can be best explored if the predominant wavering stage f is most extreme, ie f = n p/2, n odd (1,3,…) Thus E n a L/n For functional reasons (flux, cross area) pertinent estimations of n are 1 and 3 Matter impacts scale as q 13 2 E n or q 13 2 L/n CP infringement impacts scale as q 13 D m 12 2 n

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Stan Wojcicki, Physics at Off-hub Scaling Laws (2) If q 13 is little, eg sin 2 q 13 < 0.02, then CP infringement impacts dark matter impacts Hence, performing the analysis at second most extreme (n=3) may be a most ideal method for determining the equivocalness Good information of D m 23 2 turns out to be then basic Several areas (and energies) are obliged to focus every one of the parameters

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Stan Wojcicki, Physics at Off-hub CP and Matter Effects

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Stan Wojcicki, Physics at Off-hub NuMI Capabilities

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Stan Wojcicki, Physics at Off-hub Important Reminder Oscillation Probability (or sin 2 q m e ) is not unambigously identified with key parameters, q 13 or U e3 2 At low estimations of sin 2 q 13 (~0.01), the vulnerability could be as much as an element of 4 because of matter and CP impacts Measurement exactness of essential parameters can be improved by a prudent decision of running time in the middle of n and n

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Stan Wojcicki, Physics at Off-hub CP/mass progressive system/q 13 uncertainty Neutrinos just, L=712 km, E n =1.6 GeV, D m 23 2 = 2.5

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Stan Wojcicki, Physics at Off-hub Antineutrinos assist significantly Antineutrinos are critical to comprehension: Mass chain of command CP infringement CPT infringement High vitality experience: antineutrinos are ‘expensive’. Fixings: s ( p + )~3 s ( p - ) (vast x) For the same number of POT NuMI ME bar energies: s ( p + )~1.15 s ( p - ) (charge preservation!) Neutrino/antineutrino occasions/proton ~ 3 (no Pauli prohibition)

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Stan Wojcicki, Physics at Off-hub How antineutrinos can help resolve the CP/mass chain of importance/q 13 equivocalness Antineutrino range Neutrino range L=712 km, E n =1.6 GeV, D m 23 2 = 2.5

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Stan Wojcicki, Physics at Off-hub Optimum Run Strategy Start the analysis with neutrinos Run in that mode until either: A positive sign is seen, or Potential affectability with antineutrinos could be fundamentally higher (x 2?) than with neutrinos Switch to antineutrinos and keep running in that mode until either: A distinct sign is seen Potential affectability change from extra running would be better with neutrinos

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Stan Wojcicki, Physics at Off-hub Sensitivy for Phases I and II ( for diverse run situations) We take the Phase II to have 25 times higher POT x Detector mass Neutrino vitality and locator separation continue as before

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Stan Wojcicki, Physics at Off-hub Concluding Remarks Neutrino Physics gives off an impression of being an energizing field for a long time to come Most likely a few trials with diverse running conditions will be needed Off-hub finders offer a promising street to seek after this material science NuMI pillar is fabulously coordinated to this physical science as far as bar force, adaptability, shaft vitality, and potential source-to-indicator removes that could be accessible We have extraordinary enthusiasm for shaping a Collaboration that

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